S&P 500 Gains and Losses Today: DoorDash Drives Higher on a New Partnership; Bristol-Myers Squibb Stock Falls

Key Points - DoorDash (DASH) shares surged 6% after announcing a partnership with Old Navy, marking a significant expansion into on-demand apparel delivery beyond its core restaurant delivery business [3][7] - Bristol-Myers Squibb (BMY) stock fell 4.1% following the discontinuation of a late-stage clinical trial for the heart treatment milvexian, impacting investor sentiment [6][7] - Micron Technology (MU) was named a "top pick" by Morgan Stanley, with a price target increase, as demand for memory chips, particularly for AI data centers, surged, leading to a 4.2% gain in its shares [4] - Warner Bros. Discovery (WBD) shares rose 4% amid reports of potential acquisition offers from Paramount Skydance, Comcast, and Netflix, while Netflix's shares dropped 3.6% ahead of a 10-for-1 stock split [5]