Harvard Management Company reduces Bitcoin ETF holdings by 21% and establishes a $86.8 million Ethereum ETF position for the first time

According to the latest SEC filing, Harvard Management Company reduced its holdings in the BlackRock iShares Bitcoin Trust (IBIT) by 21% in the fourth quarter of 2025, while also making its first purchase of $86.8 million in the iShares Ethereum Trust (ETHA). Despite the reduction, the Bitcoin ETF remains Harvard's largest public holding with a valuation of $265.8 million.