Steven Fieler
Analyst · Morgan Stanley
Thanks, Dion. Before I go through the results, I just want to thank you for your leadership of HP. I appreciate your partnership and you know that I won't be removing you from my speed dial just yet. And Enrique has already been on my speed dial for a long time, so that won't change. I look forward to a seamless transition in our partnership going forward.
Our third quarter performance reinforces HP's ability to deliver consistent company results, profitably grow and effectively manage our broad-based portfolio. In Q3, we grew operating profit dollars, generated strong cash flow and delivered double-digit non-GAAP EPS growth. Our financial performance this quarter demonstrates our ability to successfully invest in our business while delivering strong financial results. We remain focused on pursuing returns-based opportunities ahead of us while also addressing challenges when we have them. This helps set up the company to deliver in the short term and generate long-term value creation.
Let's look at the details of the third quarter. Net revenue was $14.6 billion, flat year-on-year or up 2% in constant currency. Regionally, in constant currency, Americas and EMEA were flat, and APJ grew 11%. Gross margin was 19.9%, up 1.5 percentage points year-on-year, driven by disciplined execution and improved rate in Personal Systems. Non-GAAP operating expenses were $1.8 billion, up 9%, driven by increased investments for both growth and efficiency including investments in innovation, targeted marketing spend as well as investments in HP's digital infrastructure.
Non-GAAP net OI&E expense was $68 million for the quarter. We delivered non-GAAP diluted net earnings per share of $0.58, up $0.06 or 12% with a diluted share count of approximately 1.5 billion shares. Non-GAAP diluted net earnings per share excludes amortization of intangible assets of $23 million, acquisition-related credits of $12 million, restructuring and other charges of $14 million as well as nonoperating retirement-related credits of $19 million. It also excludes a net gain of $305 million for tax adjustments. This net gain is primarily driven by the net income tax gains resulting from several tax settlements across various jurisdictions, partially offset by the tax indemnification associated with these gains recorded in OI&E, which is part of the Hewlett-Packard Enterprise tax matters agreement. As a result, Q3 GAAP diluted net earnings per share was $0.78.
At the segment level, in Personal Systems, we are very pleased with our results. Revenue in the third quarter was $9.7 billion, up 3% or 6% in constant currency. By customer segment, we once again saw a divergence in performance, with Commercial revenue up 10% and Consumer revenue down 11%. By product category, revenue was up 8% for Desktop, up 4% for Workstations and flat for Notebooks. The team continued to successfully manage our overall product mix as Commercial demand remained strong while navigating some of the softer consumer markets.
Q3 operating margins grew very strong at 5.6%, up 1.7 points year-on-year. The exceptionally large increase was driven mainly by the team's continued focus on our strategy and disciplined execution in a favorable commodity cost environment. Operating profit was $547 million, up $185 million from the prior year.
In Print, the business outperformed a more difficult market. That being said, the results were mixed. We grew Commercial hardware revenue, increased our market share and continue to make progress in our contractual offerings. However, operating margins were down 0.4 points to 15.6% due to lower Supplies revenue.
Looking at the details. Q3 total Print revenue was $4.9 billion, down 5% nominally and in constant currency. Commercial hardware revenue was up 3%, and Consumer hardware revenue was down 10%. Total Hardware units were down 9% with Commercial units down 4% and Consumer units down 10%. In calendar quarter 2, HP gained market share to 44% as the overall market declined. Third quarter Supplies revenue was $3.2 billion, down 7% in constant currency with EMEA down in the mid-teens.
Tier 1 channel inventory levels remained below the reduced ceilings. We are making progress on the operational and strategic plans described in prior quarters and remain confident we are taking the right action. However, with the increasing softness in the EMEA market, we expect Supplies revenue to remain weak in Q4 as we continue to make progress on our plan and thus, we expect Supplies revenue to decline approximately 4% to 5% for the full fiscal year.
Looking forward, we expect to take significantly more cost out of the business while also making more financial shifts in our business model across our combined hardware, services and Supplies profit pools. The combination of these operational, market and strategic factors means that we are not planning for Supplies revenue to grow in FY '20. Importantly, having said that, at our next investor update, we will share the multiple levers we have that give us confidence in growing non-GAAP EPS in FY '20.
Turning to cash flow and capital allocation. Q3 cash flow from operations and free cash flow were very strong at $2.3 billion and $2.2 billion, respectively. In Q3, the cash conversion cycle was minus 36 days. Sequentially, cash conversion cycle improved 4 days, in line with normal seasonality with a 3-day increase in days payable outstanding, a 2-day decrease in days sales outstanding and a 1 day increase in days of inventory. We returned $533 million to shareholders through share repurchases and $240 million via cash dividends in Q3. Year-to-date, we have returned 75% of free cash flow to shareholders.
Looking forward to Q4, keep the following in mind related to our overall financial outlook: We continue to expect a headwind from currency. In Personal Systems, we expect the pricing environment to be competitive; and in Print, we expect the market to remain soft in the fourth quarter; in addition, for the full, year we continue to expect our non-GAAP tax rate, which is based on our long-term non-GAAP financial projection to be 16% in FY '19. Taking these considerations into account, we are providing the following outlook: Q4 '19 non-GAAP diluted net earnings per share to be in the range of $0.55 to $0.59; Q4 '19 GAAP diluted net earnings per share to be in the range of $0.51 to $0.55. We are raising our full year fiscal 2019 non-GAAP diluted net earnings per share to be in the range of $2.18 to $2.22. And full year fiscal '19 GAAP diluted net earnings per share to be in the range of $2.31 to $2.35.
And we continue to expect to return approximately 75% of free cash flow to shareholders through a combination of dividends and share repurchases over the course of the full fiscal year.
Operator, let's open the call for questions.