DoorDash, Williams-Sonoma, and TKO Stock Get Added to the S&P 500 - Barron's
1. DoorDash added to S&P 500, effective March 24. 2. DASH shares rose 7% in after-hours trading post-announcement. 3. Stocks added to S&P 500 typically gain 7% before inclusion. 4. Stocks see average sell-off of 1.3% post-inclusion. 5. Barclays predicts potential volatility following index addition.