The iShares Bitcoin Trust could soar in the years ahead as more asset managers and companies buy Bitcoin.

In the second quarter, the hedge fund billionaires listed below added to their positions in the iShares Bitcoin Trust ( IBIT 1.23% ) , an exchange-traded fund (ETF) issued by BlackRock designed to track the spot price of Bitcoin ( BTC -0.42% ) .

Israel Englander of Millennium Management added 3.8 million shares of the iShares Bitcoin Trust, increasing his stake 22%. The BlackRock ETF ranks among his top-15 holdings.

Steven Schonfeld of Schonfeld Strategic Advisors added 247,500 shares of the iShares Bitcoin Trust, increasing his stake 5%. The BlackRock ETF is now his third-largest holding.

Tom Steyer at Farallon Capital Management added 1.2 million shares of the i

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