According to an official filing with the U.S. Securities and Exchange Commission (SEC), the SEC has formally approved a rule change proposal from Nasdaq ISE Exchange, significantly increasing the position and exercise limits for options on the iShares Bitcoin Trust (IBIT) from 250,000 to 1,000,000 contracts. The SEC stated that the adjustment complies with the Securities Exchange Act and is designed to prevent market manipulation and protect investor interests. This move will provide institutional investors with greater trading flexibility and further enhance liquidity in the Bitcoin spot ETF options market.