Welcome to the O'Reilly Automotive Inc. Fourth Quarter and Full Year Earnings Conference Call. My name is Jason and I'll be your operator. At this time, all participants are in a listen-only mode. Later, we will conduct a 30-minute question-and-answer session. [Operator Instructions] Also please note, this conference is being recorded. I'll now turn the call over to Mr. Tom McFall. You may begin, sir.

Thank you, Jason. Good morning everyone and thank you for joining us. During today's conference call, we will discuss our fourth quarter 2017 results and our outlook for the first quarter and full year of 2018. After our prepared comments, we will host a question-and-answer period. Before we begin this morning, I'd like to remind everyone that our comments today contain forward-looking statements and we intend to be covered by and we claim the protection under the Safe Harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. You can identify these statements by forward-looking words such as estimate, may, could, will, believe, expect, would, consider, should, anticipate, project, plan, intend, or similar words. The company's actual results could differ materially from any forward-looking statements due to several important factors described in the company's latest Annual Report on Form 10-K for the year ended December 31st, 2017, and other recent SEC filings. The company assumes no obligation to update any forward-looking statements made during this call. At this time, I'd like to introduce Greg Henslee.

Thanks Tom. Good morning everyone and welcome to the O'Reilly Auto Parts fourth quarter conference call. Participating on the call with me this morning are our Co-Presidents, Greg Johnson and Jeff Shaw; as well as Thomas McFall, our Chief Financial Officer. David O'Reilly, our Executive Chairman, is also present. Hopefully, everyone had a chance to read both our fourth quarter earnings release and our leadership succession plan press release. I'll briefly discuss our fourth quarter results and our succession plan before turning the call over to Greg, Jeff, and Tom. I'd like to start the call today by thanking all of our team members for their hard work and dedication to our company. 2017 was a challenging environment for our industry. However, through your commitment to providing outstanding customer service and living the O'Reilly culture, we were able to generate our 25th consecutive year of comparable store sales growth, record revenue and operating income every year since becoming a public company in 1993. Our comparable store sales for the fourth quarter grew 1.3%, which was in line with our guidance expectations. As we discussed on last quarter's call, we faced very difficult comparisons to last December due to favorable weather across the country in December of 2016 and headwinds from a shift in the calendar. This calendar headwind resulted from an additional Sunday, our lowest volume day in 2017's fourth quarter when compared to 2016, as well as the timing of the Christmas holiday, which fell on Monday this year versus Sunday last year. These calendar shifts were a combined headwind of approximately 70 basis points to our comparable store sales growth for the quarter. When we look at our sales progression during the quarter versus our expectations, we've got off to a solid start, but hit some weather-related softness…

Thanks Greg and good morning, everyone. I'd like to begin my comments today by thanking our team for their deep commitment to outstanding customer service and continuing to build our market share through a tough environment. By always putting the customer first, we're well-positioned to sustain profitable growth in our business. Now, I'd like to provide some additional color on our fourth quarter comparable store sales results and outline our guidance for 2018. For the fourth quarter, our comparable store sales results were driven by an increase in average ticket offset in part by pressure on ticket counts on the DIY side of the business. The Professional business outperformed the DIY business during the fourth quarter. The increase in average ticket continues the long-term trend of increasing parts complexity, although we did see some inflation on same SKU pricing, primarily seasonal items, during the fourth quarter, which if it continues, will lend additional support to our topline growth moving forward. On a category basis, we saw strength in winter-related categories across most of the country, which was partially offset by extremely tough comparisons to 2016 for winter-related categories on the West Coast, which did not see the same benefits last year. For the first quarter of 2018 and the full year, we're establishing comparable store sales guidance at 2% to 4%. The key assumptions in developing our guidance our total employment will remain strong and support a modest improvement in miles driven. However, increasing gas prices could limit the growth of miles driven and put added pressure on lower income consumers. We further assume weather will be normal, pricing in the industry will be rational, and inflation will continue to be muted. Our final major assumption is that pressure in our industry from the depressed new vehicle sales totals during…

Thanks Greg and good morning everyone. To begin today, I'd also like to thank our team for their tireless commitment to providing outstanding customer service. Your dedication to our valued customers has allowed us to strengthen existing relationships and to build new ones. We ran our business to develop long-term relationships with our customers who expect high service levels regardless of the sales environment. And as a result, we have a relatively high fixed cost model, which has supported our market share growth year-after-year. With our business model and new store growth rate, our leverage point for SG&A is in the comparable store sales range of 2.5% to 3%. Comparable store sales of 1.3% for the quarter and 1.4% for the year is well below our historic and expected future growth rates. We tightly manage our expenses in all sales environments, but at the sales levels, we expect to experience deleverage on our SG&A as we will not make short-term dramatic cuts in our SG&A since that would significantly impact our service levels and damage our long-term customer relationships. As a result, we experienced SG&A deleverage of 87 and 66 basis points for the quarter and year respectively. When we look at total increase in average SG&A spend per store, we were up 1.2% for the year, which was below our beginning of the year guidance and reflects our efforts to prudently manage expenses lower during slower sales periods. Looking closer at our full year SG&A spend, we were below expectations on payroll, incentive compensation, and professional services and fees, offset in part by rising benefit cost, utilities, and vehicle cost. As Greg mentioned earlier, we're going to take a portion of our tax savings and allocate it to increase operating expenses to further enhance our best-in-class customer service. This…

Thanks Jeff. Now, I'll take a closer look at our quarterly results and our guidance for 2018. For the quarter, sales increased to $92 million, comprised of $38 million increase in comp store sales, a $53 million increase in non-comp store sales, a $2 million increase of non-comp non-store sales, and a $1 million decrease from closed stores. For 2018, we expect our total revenue to be $9.4 billion to $9.6 billion. The Tax Cut and Jobs Act of 2017 had a dramatic impact on our fourth quarter earnings and it will continue to have a significant positive impact on our tax rate on a go-forward basis. For the fourth quarter, we recorded a tax benefit of $53 million or $0.62 per share related to the remeasurement of our federal deferred tax liability from a tax rate from 35% down to the new 21% tax rate. This deferred liability relates to differences for our historic past deductions exceeded our deductions recorded for GAAP. These differences reverse over time, but will now reverse at the new lower tax rate. During the quarter, we also recorded a tax benefit of $30 million, $0.15 per share relating to the new accounting for share-based compensation. For the full year, our tax benefit for the new required accounting for share-based compensation was $49 million or $0.50 per share. For 2018, we expect our tax rate to be approximately 23% to 24% of pretax income. The new lower rate is a result of lower federal tax rate. In comparison to 2017, we expect our EPS to be affected by a $0.59 headwind from the one-time reduction of our deferred tax liabilities in the fourth quarter of 2017, a $2.50 increase from the new lower federal tax rate, and a $0.30 headwind from a tax deduction per…

Thank you. [Operator Instructions] Our first question comes from Scot Ciccarelli from RBC Capital Markets.

Hey guys. First question is, can you quantify what kind of impact are expecting from the improved car part that you mentioned during the call? Car part meaning the dropping of car sales you have, obviously, during the downturn.

When we look at the numbers, we see that that pressure is going to abate, quantifying that particular factor amongst all the factors is not something we do, but we feel like that was a pressure last year that will be less of a pressure this year. And obviously, we continue to have the aging of the vehicle fleet more vehicles in the end of -- or in the order section that continue to drive demand and growth in our industry.

Okay. And then a question -- the follow-up has to do with the reinvestment. So, if you kind of go through the numbers, and I'm assuming we're talking about 70 basis points of margin, that's how I think people are interpreting that comment. It's about $65 million, $66 million, is that all going to wages or is there's some things that might be in there? It just seems like a little bit of a high number on the wage front, but maybe there's something else in there.

Yes, this is Jeff. I'll take a stab at that one. We feel it's about $65 million. And as I mentioned in the prepared comments, the spend is basically focused in three main areas. Wage increases in excess of the historical norms, additional spend on information technology, and enhancements to our team member benefit offering.

And kind of in that order, Jeff?

That's not something that we're going to quantify the individual pieces of, Scot.

Okay, got it. Thanks a lot guys.

Thanks Scot.

Thank you. Next, we have Matt Fassler from Goldman Sachs.

Thanks a lot and good morning to you. The first question is actually a follow-up of Scot's and I guess asking it simply, do you think you would have made this investment to $65 million without tax reform? And presumably you had started 2017 -- 2018 planning process prior to the final bill being passed. Were some of these likely to be in the plan or is this really kind of a switch that you flipped when you realized you have just opportunity to invest some of those dollars?

Scot [ph], this is Tom. I'll take a shot at this one. When we look at our technology investments, we continued to invest strongly in those over the last three or four or five years. I think that the tax change has allowed us to accelerate those further. When we look at wage increases, this is the incremental amount in addition to known wage pressures we have. We feel like as the market has tightened and as others have taken action, that we need to be proactive in addressing, especially our low-end store wages, to make sure we can stay competitive in the market and attract the talent we need in our technical business.

Got you. And then my follow-up relates to weather. I guess there's good-bad weather and then bad-bad weather, depending on the offshoot between parts failure and keeping course of the road. If you think about the weather that we've experienced over the past couple of months, a more normal winter for sure, how do you feel about the potential impact of the current weather backdrop on your business later, during the summer months when some of those -- and some other parts failure comes back to drive the business? Is that the kind of backdrop that should be more helpful to you come midyear or is there less relevance?

Yes, Matt, this is Greg Johnson. As you said, there's a good-bad weather and bad-bad weather. As I said in my prepared comments, bad weather is better for us typically in northern markets and in southern markets where we're not quite as prepared typically for the weather. From a -- and then there's a short-term and long-term benefits to bad weather as well. In the fourth quarter, we saw that -- very late in the fourth quarter, we saw some benefits to bad weather because of the cold snaps up north and we do expect to see benefit as we begin in the spring and summer months, resulting from that as well. That could be the evidence of battery failures when the weather goes hot, turns hot rather, and ride control undercar categories from damaged roads, things like that, that we typically experience a few months down the road from the actual winter harsh weather.

Thank you so much. By the way congratulations on all the movements and promotions and such.

Thank you.

Thank you. Next, we have Mike Baker from Deutsche Bank.

Hi, thanks. I want to follow-up on the first quarter comments where you said that the comparisons get more difficult later in the quarter and presumably March, but correct me if I'm wrong. They started a lot easier over the next couple of weeks as just starting right about now, we're up against when the tax refunds really follow the table last year. So, could you tell us how you expect that to play out over the next few weeks and how that plays into your guidance?

Yes, Mike. I can tell you, as I said in the prepared comments, we're pleased with where we stand thus far in the quarter. And looking forward, as you move later in the quarter, we typically see an uptick based on seasonality, we'll see an uptick in parts because our -- due to seasonality. And you're right, the tax benefit did hit us over the next couple of weeks and we were hopeful that we'll see improved sales during that period of time and we remain confident in our guidance of 2% to 4% for the quarter.

So, I guess, when you say hopeful, I mean does that imply that the 2% to 4% assumes a pick up in the next few weeks? And then maybe a little bit of a drop off in March? Is that the right way to think about it?

This is Tom. What I would tell you is that we build our sales plan on a daily basis throughout the quarter and build our guidance based on overall market assumptions. And when we had the call last year, we have obviously were having a slower than anticipated beginning of the year and some of that was the impact of the timing of tax refunds. So, we've taken all that into account in developing our guidance for the quarter and we're comfortable with our 2% to 4% guidance based on our progression thus far in the quarter.

This is Greg Henslee. Let me just add one thing. When you talk about the quarter, and we recently talked about the importance of the end of the quarter and the comparisons is simply because of the seasonality that Greg mentioned and the fact that our sales typically ramp into the quarter. So, while we're pleased with where we are in the quarter, the majority of the quarter is in front of us, and we really didn't take a lot of the potential for the timing of tax refunds and stuff into our guidance, but we did consider just kind of how we did last year, how we would typically ramp, and where we're at in the quarter and, as Greg said, we're comfortable with the guidance we gave recognizing that we're pleased with where we're at, at this point in the quarter.

Okay. Appreciate that. I'll turn it over to somebody else.

Thank you. And next, we have Steven Forbes from Guggenheim Securities.

Good morning. Maybe just a quick follow-up on the reinvestment. I kind of think about it, if you can touch on why 70 basis points? Why not more, given your margin structure and the likelihood of improving industry backdrop and the share opportunities that exist in certain regions around the country? How do you come up with the 70 basis points?

This is Tom. I'll answer the question and then turn it over to Jeff. When we look at the likelihood -- when we look at what projects we thought we could accelerate and what the ROI was, that's a more cut and dry item. When we look at what we need to do to be competitive on benefits to retain people and reduce turnover, little more of a cut and dry. When we look at what we thought the wage pressures were going to be in total based on changes in the market, we did some work and made an estimate. What I'll tell you is that we don't do anything blanket with wages and that something that Jeff can describe. We're talking about store wages.

Really, it would be at store-by-store market-by-market analysis and obviously, with what's going on in the industry and minimum wages coming up and things that we're hearing from other retailers about moving wages, we just wanted to be prepared for that and we'll react accordingly by market based on what was going on in the market. As I said in my prepared comments to make sure that can not only attract, but retain good solid parts professionals.

Maybe just a follow-up on the topic, when you say wages, is it strictly just rate or is there also potential investment in incremental labor hours? And then just last one, just given the timing of this impact, should we think about, the 70 basis points, as an annualized impact or the annualized impact greater because of the potential timing of the wage increases?

This is Tom. I'll address the annualization. When you look at the benefit portions, when we roll out benefit changes, it's got an ongoing portion of expense, but it's also got an immediate expense impact to catch up our accruals to these new levels. So, we would expect the quarter-to-quarter impact to be pretty similar throughout the year and the annualization to be similar as we have more start-up costs on these items at the beginning of this year and then wages ramp, it will level out.

I mean, labor hours, my comment there is our philosophy is the same as it's always been. We staff with the appropriate volume of the business and we would continue to do that kind of buy market based on what we say our sales volume doing.

Thank you.

Thank you. Next, we have Greg Melich from MoffettNathanson

Hi thanks. First, Greg, I want to thank you for all your work over the years with us. And Greg and Jeff, congrats.

Thank you.

I wanted to -- I said two questions. One is on inflation. I think you mentioned that in relation started in the fourth quarter. Could you quantify how much that was in your guidance for this year and the 2% to 4% comp, how much inflation do you expect? And then I have a follow-up.

This is Tom. Most of the inflation that we saw in the fourth quarter was on seasonal-type items. Our comments in the prepared remarks were that our expectation is that we're going to have yet another year where same SKU pricing doesn't come up. To the extent that we did see some, that would additional tailwind for us.

So, basically, same SKU is the same and it's just commodity sort of flowing through?

Well, we saw some same SKU inflation on seasonal items.

Okay, great. And then the second question was, when you thought about margin investment and ROI from that, it was pretty clear you went methodically through everything. And I'm curious as to where product investment or gross margin investment flushed out in that equation? Any reason why you didn't look to put some into the product margin or gross margin generally, even as part of a service offering when you look to invest margin?

Since this is a plan question -- this is Tom again, I'll answer the question. We feel comfortable with where our pricing is. Obviously, we are very competitive on the street and our businesses are very technical business. It's not just the price of the goods that determine what the value is to the customer, and we continue to feel like we're priced appropriately for the services we provide.

And then, additionally, there's really nothing to gain for us by lowering price. I mean, if we lower our price today on any given category, you can bet our competitors, with the transparency of the internet on pricing, are going to lower their price tomorrow. So, there's just nothing to gain there. If we're priced online, we always have to fix that, but as Tom said, that's just not the case. We think our company and all of our competitors spend the time, spent a lot of time on ensuring that we're price competitive, and we just don't anything to gain by lowering our prices as long as we're in a competitive position.

And on the IT investment, I mean, Home Depot made a big thing about ramping spend on more direct distribution. Is that part of the CapEx increase you guys are talking about or no?

This is Tom. I'll start and Jeff can add on. Investment and distribution is something we've always done and availability is such a crucial piece of what we do. That's always in our CapEx plan.

And frankly, the number of times that we touch a store now is so significant. Frankly, we've gone overboard in the past. And there was a time where we had a pretty important market where we were touching our stores 12 times a day out of the distribution center. And we finally realized, this is just it's crazy, that there are service levels are that high when they really didn't really need to because we were far out with our competitors. We realized we can outpace our competitors still just touching those stores eight times a day. So, if we felt like that we were even slightly in a not competitive position from an availability perspective, we've always got the ability to leverage up our service levels from our DC's and frankly, we feel like we are the best availability in the industry as it stands today.

Yes, that makes. I appreciate it guys. Good luck.

Thanks.

Thank you. Next, we have Seth Sigman from Credit Suisse.

Thanks. Good morning guys. Just on the DIY versus commercial commentary, I think you said DIY was weaker. What do you attribute that to in the quarter? And I guess, was the DIY side of the business facing a more difficult comparison? I'm just wondering, has that improved here in the first quarter?

Yes, the DIY was definitely up against a tougher compares and we're seeing a little bit of an uptick in our professional business there in the fourth quarter. Yes, a key driver of that is during the cold weather in 2016, battery sales were pretty incredible, because batteries that didn't fail during the prior winter failed during that winter. Batteries are lined, it is heavily skewed to the DIY side of the business. But over time, we would expect as the complexity of cars continues to be more prevalent, that our do-it-for-me business would simply be a stronger business than our DIY business.

Okay. Understood. And then I just want to follow for higher expenses for 2018. I know it was asked in a lot of different ways, is there a way to help us understand what is sort of catch-up spending from 2017? And talked about payroll incentive comp, professional fees all being lower than you had planned in 2017. So, of that 70 basis points, how much are just simply catch-up?

Well, what we tried to communicate is that the 70 isn't incremental thought our SG&A plan would look like absent the pressures created by the new tax code.

Okay. Well, I guess just given the incremental investments then for this year, for 2018, I mean, bigger picture as you're thinking about past this year, I mean, do you see opportunities to continue to invest or do you think some of these investments are more isolated to 2018?

We would expect the investment to continue in 2019, but we would hope the investments that we're making that the incremental spending, we'd provide even higher levels of service and leverage that with better sales and really increase team member productivity through technology enhancements as well as reducing our team member turnover.

Okay, understood. Thank you.

Thank you. Next, we have Alan Rifkin from BTIG.

Thank you for taking my question. So, thank you, Greg Henslee, for everything that you've done in the past and certainly congratulations to both Greg Johnson and Jeff on your new appointments. My first question is a follow-up on the reinvestment from the tax reform. So, certainly, one would assume that you're making these investments because you believe that you can yield a higher rate and at some point in the future. Would it be reasonable to assume that these higher returns would start in 2019 or will they be further out than that?

Well we try to drive higher sales every day. Our plan encompasses the traction we think we'll get this year. Some of these investments are longer-term investments. We would tell you, a big opportunity for us is to reduce our store level turnover as it impacts our service levels.

And if I can add to that, and Tom mentioned, turnover and omnichannel. It takes a lot to learn how to sell parts. And by decreasing turnover, we feel like long term, we put ourselves in a significantly better position to provide service levels to our customers and just be the professional parts people that our company has been built on. So, that really starts generating immediate returns as we start decreasing the percentage of turnover that we have annually. And then omnichannel, we feel like that if you have an opportunity to do better than we do today. And I feel like we do pretty well today. We can do a lot better. And as we make those improvements to our platforms, I think, we see pretty immediate effects of those improvements, but they're incremental. It builds over time, as our professional customers using our portal, learn to use our software, like our software, become committed to us, partly because of service, mainly because of service, but partly because they like the way our interface works. And same thing applies to our DIY customers. So, while all this is incremental over time, some of it has an immediate positive effect.

Okay. Thank you. And a follow-up, if I may. So, throughout 2017, which was certainly a more difficult year than what many of us expected, you cited a number of factors that you thought were transient, whether it was the [Indiscernible] number as a result of the recession, the weather, obviously, Hispanic population headwinds, tax return delays, e-com competition. As you sit here in the early stages of 2018 and you look back on what's happened in 2017, do you still believe that all of those factors that I just cited were in fact, transient? What do you think any of them would be longer term in nature?

I'll take it. Well, I think the -- as Tom said earlier, the SAAR issues will resolve this year. So, it's hard to measure to the extent to which that impacted our business. But we know it had some effect. But that's in the process of curing right now. To me, out of the things that we talked about, SAAR, weather, the Hispanic issue and tax, I feel like weather, having two consecutive mild winters and a mild summer, I think, that was probably the factor that impacted us largest. The Hispanic thing, I think, is pretty well resolved and the tax thing is a matter of timing, although the timing is important because if people get their tax refunds at a time when there's cold weather's in place, they're having car trouble, that is going to increase the spend that they put in their car versus maybe a springtime when they've gotten through the winter by patching their car together, and they've got improvements they want to make to their house or something and puts them in a better position to maybe spend money on their house. So, the timing is important. But I think that's just a matter of something we look at year to year. But I think the other factors, I think, the Hispanic thing is cured a lot. I think this winter is going to help a lot with the weather issue, and we'll see benefits of that this summer and the SAAR issue is in the process of curing.

Okay. Thank you. Thank you very much.

Thanks Alan.

Thank you. Next, we have Carolina Jolly from Gabelli & Company.

Hi, thanks everyone and congratulations to everyone. Greg, thanks so much for your service so far. Just quickly, I guess, my one question would just be, do your cash and earnings estimates include any benefit from the new guidelines around the 100% expensing of certain assets?

That sounds like an accounting question. I'll take that one. Over the years, there have been many programs that have accelerated the depreciation of certain fixed assets and we've taken advantage of those, but I would tell you is that the change in the law changed those this year for us from a headwind as we turned the corner on having a bigger GAAP deduction and tax deduction to equal. So, the answer is yes, it does include that. That benefit is not as big for us because of past opportunities to accelerate depreciation.

Okay, perfect. And then I guess, another kind of accounting question. Can you give -- can you quantify any effects on the LIFO charges that might have affected this quarter's margin?

We were in the $3 million or $4 million range.

Okay. Thanks.

Thank you. And next, we have Michael Lasser from UBS.

Good morning. Thanks a lot for taking my question. And congratulations everyone, that's great news. My question is a little bit geared towards the first quarter. So, you got a 2% to 4%, you said you're pleased with the business, you talked about some of the ebbs and flows. Are you surprised that business hasn't come back stronger?

What I would say is that we always do as much as we can to drive as much business as we can within reason. I think one of the factors that has probably caused business not to be maybe stronger than it is, but again, we're not displeased with our business. We're pleased with how we've done in January. As Greg mentioned, some of the cold weather that we had pushed down into markets that don't benefit from cold weather immediately. When Dallas-Fort Worth shuts down, and you look at your window and there's no cars on the road, that's just not a good day for us. And those factors existed in many southern markets, which helped dampen maybe the positive effect that we're having from a cold winter. Longer term, the fact that we're having this cold weather and we've had this cold weather through some of the markets, it's going to be a positive thing for our industry this year, I would think.

And without getting to granular on what you're seeing by market, when the business does come back in those markets that are normally not used to seeing the weather, is it better than it's been? So, the store may be closed when there's a lot of snow, but then the next day it's quite good? Or is that not how it's happening?

Usually those markets don't get as extreme a cold weather that would drive part failure as the northern markets, where it just get brutal cold weather which causes rubber to not be as flexible, causes belts to break, causes starter motors not to work as well, causes batteries to fail, cooling systems freeze up. I mean, there's just all kinds of things that you can have in the extreme weather. You don't get quite as much benefit in the warmer markets that aren't used to cold weather, because in Dallas-Fort Worth, when it gets to 20 degrees, that's really cold weather, but that's really not cold enough to cause the kind of damage that we're talking about in the northern markets.

And Michael, this is Greg. Another benefit there, it's fortunate in many of those southern markets, that when they get bad weather and it does impact road conditions, and as I said, they're not as equipped to clear that. But typically, the weather turns around really quickly. You don't have snow and ice on the roads very long. So, the recovery is really quick to get back to business as normal.

And my follow-up question is, we've all become accustomed to seeing massive share gains from O'Reilly, and you guys widely outperforming your competition. Over the last four, five quarters, your comps have been a little bit more consistent with some of what the peers have been reporting. Do you think it's just harder to gain share perhaps, because share's going to other channels at this point?

Michael, this is Tom. What I would tell you is that some of our competitors have a different scale. They've have different measuring period than we have. We're basically looking at our comparable store sales on exactly their calendar and we continue to be comfortable with our performance. The other thing I would say is that -- a couple things is, one, the SAAR pressure is primarily a DIFM item as those new tires enter their repair cycle, that tends to be a DIFM customer, and we have that at higher percentage than some of our competitors on the do-it for me side of the business. The other part is you look at our two and three-year stacks, there's quite a spread.

And then additionally, back a few years ago, when we had some ground to gain just from a per store average standpoint as compared to our best competitors. And again, we have many great competitors. Our per store average is now caught up and ahead of next our competitors and we simply just don't have as much to gain in that general basis, but we still feel like we're best positioned to lead the industry from a comp store sales perspective, and we would expect to continue to do so.

And Greg -- one more thing to add to that is it's not just about the publicly-traded peers. I mean, there's over 36,000 parts stores all across the country and there's a lot of market out there, it happens one store at a time.

That's helpful. Thank you so much and congrats again.

Thanks Michael.

Thank you. Next, we have Simeon Gutman from Morgan Stanley.

Thanks. Good morning. Congratulations to everyone. First -- my first question is on sales. I guess following on Michael's question, can you just tell us if you're comfortable for the start of the first quarter, how big is the spread and performance between markets? I don't know if you want to call it good or bad. And then, within the sales part, are you seeing any evidence that you're seeing the vintages of the six to 11-year old cars creep back? And any larger type weather repairs happening, not just batteries and starters and alternators?

Simeon, I would say that the spread across markets was fairly similar to what we've seen over the past few quarters with our more mature markets being a bit softer than our less mature markets. Our northern markets and western markets have performed a little better this winter than -- earlier this winter than our Central U.S. markets. I'm sorry, what was the second part of your question?

The vintages, if you're seeing any signs that -- you're seeing the sweet spot come back already, I mean, in this part of the year. And then as part of that also, just after the weather, are you seeing any bigger type breakage or repairs begin to happen? There's usually a lag after some of the simple things that start to snap.

Yes, I wouldn't say we're seeing anything yet. I think most of the upside from the weather is still yet to come. Again, with the exception of the winter weather-related categories, wipers, batteries, things like that.

To meet -- they meet the demand.

Yes.

Okay. And then my follow-up is on gross margin. I'm trying to think through the components, maybe how price is behaving relative to the cost of goods sold. And so I'm curious if you're seeing any pressure on sort of the price -- the selling price, and the expansion that's embedded in the guidance is coming from just lowering acquisition cost, vis-à-vis your suppliers.

Yes, I mean, it's coming from a few different places. As we say, the lowering cost is a small part of that. We expect that to be more so in the front half of the year than on the back half of the year. But a lot of it is coming just from leveraging stronger sales, leveraging our fixed cost across the stronger sales share that we expect.

And the selling price is generally stable?

Selling price is generally stable. We monitor our pricing with our competitors as do they us constantly and we feel like we don't expect to see a lot of inflation on the cost side or the selling price side this year.

Okay. Thanks guys. Good luck,

Thanks.

Thank you. And next, we have Christopher Horvers from J.P. Morgan.

Thanks guys. A couple of quick follow-ups on sort of weather and the quarter trend. As you look at December, was that real tough compare? Did you accelerate on the two-year stack? And did you see on that basis much difference in the DIY versus the do-it-for-me side?

Chris, this is Tom. We don't comment on our monthly comps. I guess we commented on two months this year because they were negative and the only negative comp months we've had in a long, long time. But individually, we're not going to comment on monthly comps.

Okay, understood. And then does -- on the southern markets, I understand that shutting down of DFW and how that would be a negative to overall, but does getting down to the 20s lead to better trends during the summer months in that region?

Not as much as it would in the northern months, but I think it is helpful. The cold weather is hard on a lot of components. The part of it is just do the damage to roads and things like that from an extended freeze and thaw, and freeze and thaw, and you just don't have as much of that in the southern markets. So, you have some benefit, but it's not nearly as positive of a benefit as it would be in the northern markets where you had the deep breeze and then the thaws that are so damaging to the roads.

And then the last question is as you think about your whether assumption is neutral for the year, obviously, January and early February starting out better than a year ago, what's your underlying assumption in terms of the outlook for the summer? Are you expecting a normal summer? A cooler summer? Is that going to offset the early strength on the winter front? Thanks very much.

Yes. We would expect a warmer summer and we would expect that based on -- as we said, the more harsh winter we've had this year, more product failures and a better summer selling season.

Thank you. We have reached our allotted time for questions. I will now turn the call back over to Mr. Greg Henslee for closing remarks.

Actually, it's Greg Johnson.

Yes, Jason, this a Greg Johnson. Thank you very much. We'd like to conclude our call today by thanking the entire O'Reilly team for your continued dedication to customer service in the third quarter. We look forward to a solid year in 2018. And we like to thank everyone for joining our call today and we look forward to reporting our 2018 first quarter results in April. Thank you.

Thank you. Ladies and gentlemen, this concludes today's conference. Thank you for participating and you may now disconnect.