Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

- Gap (GAP) shares jumped after naming a retail industry veteran to head Old Navy and profit outpaced estimates, offsetting a sales decline at the value chain and lower sales guidance.

- Apple's (AAPL) Tim Cook handed over the reins to John Ternus on Tuesday, capping a tenure as chief executive officer that cemented the company as an iconic global brand and turned its stock into one of the most reliable bets.

- Shein Global Holdings’ shares long-awaited market debut has come at an awkward time: the fast-fashion retailer’s peak growth years are behind it just as tariffs, regulatory pressure and intensifying competition are making its next phase harder.