Pinterest Tumbles 8%, Reddit and Snap Pull Back: Is the Premium Multiple Unwinding?

Pinterest shares fell 8% to $18.59 on Wednesday, with no new company-specific headline tied to the move. The stock is down 21% over the past month, returning near the average level around management’s recent buyback. Reddit dropped 2% to $147.04 and Snap fell 1% to $5.36, but neither moved as sharply. The article frames it as a sentiment reset among ad-driven names rather than a broad market selloff, noting the Global X Social Media ETF (SOCL) was down 1% and the SPDR S&P 500 ETF Trust (SPY) slipped just 0.4%. It points to late-August developments: CFO Julia Donnelly resigned, interim leadership is expected to begin at end of October, and Pinterest guided Q3 2026 revenue to $1.19B-$1.21B (up 13%-15% year over year), down from Q2’s 18.2% growth, with a trailing P/E of 54.81x.