Kalshi and Polymarket announced user restriction measures against insider trading on March 24th. Bipartisan lawmakers also introduced draft legislation prohibiting event contracts related to sports events and imposing trading restrictions on groups such as political candidates and athletes.

Polymarket will adjust its fee mechanism starting March 30, 2026, introducing multiple market categories and adopting a dynamic formula to calculate new fee rates. Fees will be used to incentivize market makers to provide liquidity, currently only charged on Crypto and Sports markets, while other markets remain fee-free.

March 23rd, two U.S. senators plan to introduce legislation to ban prediction market platforms from listing contracts related to sports events, arguing that these markets infringe on consumer rights and tribal sovereignty, and calling for state government regulation of gambling activities that may lead to youth addiction. This move could reshape the regulatory landscape for sports betting and prediction markets.

Datavault AI於3月19日完成對NYIAX的收購，交易總價值約6000萬美元，旨在增強其區塊鏈數據和代幣化資產的交易基礎設施。此次收購將整合NYIAX的交易技術，以促進數字和現實世界資產的代幣化。公司還計劃推出多個市場平台，並與Sports Illustrated合作開發體育主題交易所。

Gate News reported that on March 19, Polymarket announced the launch of an offline space called "The Situation Room" in Washington, D.C., positioning it as the world's first themed bar focused on "situation monitoring." The venue operates like an "intelligence-version sports bar," integrating real-time X information feeds, flight radar, Bloomberg terminals, and Polymarket data screens to continuously track global hotspot events and dynamics.

NBA面臨關於球員轉會與金融產品合規的問題。字母哥在交易截止日後宣布成為體育預測平台Kalshi Sports股東，避免直接審查，投注量高達2331萬美元。雄鹿隊則在截止日前宣布不交易他。

Manta Network與印尼Pruv Finance合作，推出Garuda Sports Fund($GSP)，專注投資印尼體育設施，年APY約30%。該項目將通過跨鏈橋引入Manta Pacific，並計劃未來向社區開放代幣認購。

Barstool Sports 創始人 Dave Portnoy 周一投資超過 200 萬美元，分別購買了 100 萬美元的 XRP、75 萬美元的比特幣和 40 萬美元的以太坊，並在社交媒體上表達了自己趁市場暴跌的投資策略。