Pinterest (NYSE: PINS) delivered a clean beat in Q2. Revenue of $1.18 billion topped the $1.15 billion consensus by 2.8%, while non-GAAP diluted EPS of $0.43 came in $0.07 ahead of estimates. The headline numbers are strong, but the composition matters more: user growth is accelerating, monetization is improving, and capital returns are aggressive. The question is whether the margin trajectory can keep pace.
Revenue rose 18% year over year (17% on a constant-currency basis). An 11% increase in global monthly active users to an all-time high of 640 million and a 7% expansion in average revenue per user to $1.86 drove the growth. Management notes this marks the 11th consecutive quarter of double-digit user growth. The Rest of World segment was the standout, with MAUs up 15% to 377 million and ARPU surging 21% to $0.23. US and Canada, still the profit engine, grew revenue 18% to $880 million on 4% MAU growth and 14% ARPU expansion to $8.30. Europe was more modest: 8% MAU growth and 4% ARPU growth.
Adjusted EBITDA rose 24% to $311.3 million, with margins expanding 100 basis points to 26%. The margin improvement is real, yet operating leverage is being partially offset by heavy investment. Research and development expense grew 25% to $451 million, and sales and marketing rose 20% to $374 million. Pinterest is spending aggressively on AI and ad-tech infrastructure. The GAAP net loss of $46.7 million versus a $38.8 million profit a year ago is largely a function of $319.7 million in share-based compensation and $14.3 million in restructuring charges. On a non-GAAP basis, net income grew 9% to $249.5 million.
The capital allocation story is the most aggressive in the sector. Pinterest completed over $2 billion in share repurchases year-to-date at an average price of $18.17, funded in part by a $979.9 million net issuance of convertible notes. The buyback pace looks aggressive given that diluted share count has already fallen from 690 million to 578 million year over year. With cash and marketable securities declining from $2.47 billion at year-end to $1.27 billion, the balance sheet is becoming less liquid. The convertible note issuance and capped call purchase suggest management is betting the stock is undervalued, but it also introduces leverage that wasn't there before.
Q3 guidance calls for revenue of $1.19 billion to $1.21 billion, representing 13-15% growth, and Adjusted EBITDA of $335 million to $355 million. The midpoint implies a slight deceleration from Q2's 18% growth, which management attributes to a modest FX headwind. The EBITDA guidance midpoint of $345 million would represent roughly 29% margins at the revenue midpoint, a meaningful step up from Q2's 26%. That's an optimistic signal, but it also sets a high bar for execution.
Pinterest is executing well on user growth and monetization. The margin expansion narrative depends on whether the investment cycle is peaking. If R&D and sales costs continue to grow at 20%+, margin leverage will be hard to sustain. The buyback is a vote of confidence, but it's also consuming cash that could fund organic investment. For now, the Q2 print is a clear positive, and the guidance suggests management sees no demand slowdown. The next quarter will test whether the margin trajectory can follow through.