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

On this episode of Stock Movers:

- Synopsys (SNPS) shares jumped after activist investor Elliott Investment Management made a multibillion-dollar investment in Synopsys Inc. and plans to push for changes at the chip-design software maker, according to people familiar with the matter who asked not to be identified because the discussions are private.

- Draft Kings (DKNG) and Flutter (FLUT) stocks rose as the Wall Street Journal reported US senators are set to introduce bipartisan legislation to ban sports bets on prediction markets.

- Mastercard (MA) shares fluctuated after the company was saddled with a multimillion-dollar bill after the failure of Brazil’s Banco Master SA left it on the hook to pay out retailers that processed cardholder payments from the lender’s fintech.

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