Pinterest (PINS) Stock Jumps on S&P MidCap 400 Inclusion: Is the AI Shopping Pivot Undervalued Going Into 2026?
Pinterest shares rose nearly 4% in pre-market trading after S&P Dow Jones Indices announced the company will join the S&P MidCap 400 on December 22. The stock traded around $26.75 late Monday morning, up from recent lows but still well below its 52-week high. Pinterest recently reported record user growth and higher revenue, but missed analyst earnings expectations for Q3.