Key Takeaways
- • Harvard Management Company cut its iShares Bitcoin Trust (IBIT) stake by 1.48 million shares, or 21%, in Q4 2025, reducing holdings to 5.35 million shares worth $265.8 million as of Dec. 31, down from 6.81 million shares worth $442.8 million, according to SEC filings.
- • Harvard established its first publicly disclosed Ethereum position, acquiring 3.87 million shares of BlackRock's iShares Ethereum Trust worth $86.8 million.
- • Bitcoin remained Harvard's largest publicly disclosed holding at year-end, with the $265.8 million IBIT stake exceeding its positions in Alphabet, Microsoft, and Amazon.
- • Market analyst Andy Constan of Damped Spring Advisors suggested the sale may have unwound trades that exploited Bitcoin treasury companies trading at premiums to their holdings.
- • Academic critics, including Andrew F. Siegel (University of Washington) and Avanidhar Subrahmanyam (UCLA), questioned the endowment's digital asset strategy.
Summary
Harvard Management Company reduced its exposure to BlackRock's iShares Bitcoin Trust by 1.48 million shares during the fourth quarter of 2025 while establishing its first publicly disclosed position in an Ethereum exchange-traded fund worth $86.8 million, according to SEC filings released Friday. The moves signal a strategic shift in how the Ivy League endowment approaches digital asset investments.
As of Dec. 31, the university's investment arm held 5.35 million IBIT shares valued at $265.8 million, a 21% decrease from the prior quarter, when holdings stood at 6.81 million shares worth $442.8 million. Bitcoin remained Harvard's largest publicly disclosed holding, and the position exceeded the endowment's stakes in Alphabet, Microsoft, and Amazon, according to the quarterly filing. Harvard simultaneously acquired 3.87 million shares of the iShares Ethereum Trust, marking its first disclosed position in a fund tracking the second-largest cryptocurrency by market value.
The adjustments came amid volatile conditions for digital assets. Bitcoin peaked near $126,000 in October 2025 before falling to $88,429 by year-end, while Ethereum declined approximately 28% over the same period. Andy Constan, founder and chief investment officer at Damped Spring Advisors, said market dynamics may have influenced the timing, suggesting the sale could reflect unwinding trades that capitalized on Bitcoin treasury companies trading at premiums to their holdings. Data from 13F filings compiled by Todd Schneider at 13.info show institutional IBIT holdings fell to 230 million shares in Q4 from 417 million in Q3.
Academic observers have questioned the strategy. Andrew F. Siegel, emeritus professor of finance at the University of Washington, described the Bitcoin investment as risky and noted year-to-date losses of 22.8%, according to The Harvard Crimson. Avanidhar Subrahmanyam, a UCLA finance professor, expressed reservations following the Ethereum addition, arguing that cryptocurrency is an unproven asset class with unclear valuation methods.
As of Dec. 31, the university's investment arm held 5.35 million IBIT shares valued at $265.8 million, a 21% decrease from the prior quarter, when holdings stood at 6.81 million shares worth $442.8 million. Bitcoin remained Harvard's largest publicly disclosed holding, and the position exceeded the endowment's stakes in Alphabet, Microsoft, and Amazon, according to the quarterly filing. Harvard simultaneously acquired 3.87 million shares of the iShares Ethereum Trust, marking its first disclosed position in a fund tracking the second-largest cryptocurrency by market value.
The adjustments came amid volatile conditions for digital assets. Bitcoin peaked near $126,000 in October 2025 before falling to $88,429 by year-end, while Ethereum declined approximately 28% over the same period. Andy Constan, founder and chief investment officer at Damped Spring Advisors, said market dynamics may have influenced the timing, suggesting the sale could reflect unwinding trades that capitalized on Bitcoin treasury companies trading at premiums to their holdings. Data from 13F filings compiled by Todd Schneider at 13.info show institutional IBIT holdings fell to 230 million shares in Q4 from 417 million in Q3.
Academic observers have questioned the strategy. Andrew F. Siegel, emeritus professor of finance at the University of Washington, described the Bitcoin investment as risky and noted year-to-date losses of 22.8%, according to The Harvard Crimson. Avanidhar Subrahmanyam, a UCLA finance professor, expressed reservations following the Ethereum addition, arguing that cryptocurrency is an unproven asset class with unclear valuation methods.
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