Pinterest (PINS) Stock Jumps on S&P MidCap 400 Inclusion: Is the AI Shopping Pivot Undervalued Going Into 2026?
Pinterest, Inc. is back in the spotlight today as the stock reacts to a major index upgrade just weeks after a sharp post‑earnings selloff. Between its entry into the S&P MidCap 400, record user growth and an aggressive push into AI‑driven shopping, Pinterest stock now sits at the intersection of powerful long‑term growth narratives and very real short‑term risks.