13F Bitcoin ETF Filings: Tracking Institutional Holdings

A 13F Bitcoin ETF filing shows reportable U.S. securities positions held by qualifying institutional investment managers at quarter-end. For investors, advisors and financial professionals tracking the Bitcoin ETF market, these filings help distinguish institutional demand from retail investors, but the data can be up to 45 days old and should not be treated as a real-time trading signal.

Key Takeaways

• The SEC Form 13F framework generally applies to institutional investment managers exercising discretion over at least $100 million in Section 13(f) securities.

• Form 13F filings are generally due within 45 days after quarter-end, creating a significant reporting lag.

• Among major IBIT hedge-fund holders tracked by CF Benchmarks, holdings declined 28% in Q4 2025, from 114 million to 82 million shares—nearly one-third.

• Investment advisors increased aggregate IBIT holdings by 145% over the year to Q4 2025, suggesting a different ownership trend from hedge funds.

• Falling hedge-fund exposure can represent strategic repositioning or leverage reduction rather than necessarily diminished institutional commitment to Bitcoin.

Key 13F Bitcoin ETF Trends

The figures describe specific reporting periods rather than current holdings. ETF issuers, institutions and companies can buy or sell positions after the applicable quarter-end date.

How 13F Bitcoin ETF Filings Work

Congress introduced Section 13(f) to increase the public availability of information about institutional securities holdings. Under the SEC's Form 13F process, qualifying managers report covered long positions quarterly.

The filing process covers securities such as spot Bitcoin ETFs rather than Bitcoin held directly in a wallet. Short equity positions are not reported, while certain listed options may appear. The SEC also notes on individual filings that submitted information has not necessarily been reviewed for accuracy or completeness.

This limitation matters because a hedge fund may hold an ETF on behalf of a strategy while simultaneously using futures or other instruments that change its economic exposure.

What Changed in the Bitcoin ETF Market?

Q1 2025 showed broad institutional participation. Investment advisors accounted for approximately 50% of 13F Bitcoin ETF assets, while hedge funds represented about 32%. BlackRock reported a new position worth about $217 million, while Abu Dhabi's Mubadala sovereign wealth fund increased its holding to approximately $411 million.

The picture changed during the subsequent Bitcoin drawdown. By Q4 2025, CF Benchmarks data compiled using 13F filings and Bloomberg showed aggregate IBIT holdings among major hedge funds falling from 114 million to 82 million shares, a 28% reduction.

That decline does not by itself prove institutions were abandoning Bitcoin. Hedge funds frequently manage leverage, drawdown limits and basis trades, so the reduction can be read as rather strategic repositioning and risk management than a simple reversal of the Bitcoin adoption story.

Investment Advisors Continued Increasing IBIT Holdings

Investment advisors followed a different path. Aggregate advisor IBIT holdings rose from approximately 38 million shares in Q4 2024 to more than 93 million in Q4 2025, an increase of 145%.

BlackRock's proprietary position increased from roughly 3 million to 12.8 million IBIT shares, a 328% increase over the same period. Morgan Stanley also increased holdings held in a brokerage capacity on behalf of clients.

Meanwhile, Mubadala increased its IBIT position 46% during Q4 2025, from about 8.7 million shares to 12.7 million shares, worth roughly $630 million at quarter-end. Its earlier $411 million figure refers to Q1 2025, not Q4.

BTCI and Companies Pivoting to Different ETF Strategies

Institutional holdings are not limited to conventional spot Bitcoin ETFs. The NEOS Bitcoin High Income ETF, or BTCI, was primarily held by small and mid-sized investment advisors in CF Benchmarks' Q4 2025 review. Its holder profile illustrates how some companies and wealth-management firms are pivoting toward income-oriented products rather than seeking only direct Bitcoin price exposure.

Such variation leaves ample room for future growth across ETF structures, but different products can represent very different investment intentions.

What 13F Data Cannot Show

A 13F report is a snapshot, not a complete portfolio. It does not disclose short equity positions and may omit derivatives or other exposures that offset reported ETF holdings. Therefore, buying pressure inferred from filings can exaggerate directional demand.

It also does not show the entire Bitcoin supply held by institutions. ETF shares represent claims on fund assets managed by ETF issuers, while direct corporate Bitcoin holdings, exchange balances and retail supply sit outside this reporting process.

The 45-day delay is equally important: an institution may have increased, reduced or completely sold a position before its filing appears on the SEC website.

How to Interpret Institutional ETF Changes

A quarter of selling should be reviewed alongside the market environment. During a healthy market adjustment, hedge funds may reduce leverage while advisors, pension funds, governments or corporations continue building longer-term exposure.

Changes in institutional holdings are therefore indicative of portfolio behavior, not proof of future Bitcoin price direction. Neither an advertisement nor promotional writing should turn a quarterly filing into an investment recommendation; the data is intended as a transparency device for understanding reported securities ownership.

How Gate Can Help

13F filings measure delayed institutional securities positions, while direct crypto markets provide more immediate information about Bitcoin trading activity. Investors comparing reported ETF demand with current price, volume and liquidity can review the BTC/USDT market on Gate.com. Market data may help provide context around institutional allocations, but it does not predict whether institutions will increase or withdraw capital in a future quarter.

Conclusion

13F Bitcoin ETF filings help track how institutional investors allocate capital across spot Bitcoin ETFs and related products. Recent data shows substantial divergence: hedge funds reduced IBIT exposure during the Q4 2025 drawdown, while investment advisors, BlackRock and Abu Dhabi-linked capital continued increasing positions. The broader story is therefore one of changing ownership and strategic repositioning rather than a simple institutional buy-or-sell signal.

FAQ

How often are 13F Bitcoin ETF filings updated?

Form 13F is filed quarterly. The SEC generally requires filings within 45 days after each applicable quarter-end. The reporting delay means positions may have changed substantially by the publication date.

Did hedge funds reduce Bitcoin ETF exposure by nearly one-third?

Among the major hedge-fund IBIT holders tracked by CF Benchmarks, aggregate holdings fell from approximately 114 million shares in Q3 2025 to 82 million in Q4 2025, a 28% reduction, which is close to one-third.

Did investment advisors increase Bitcoin ETF holdings by 145%?

Yes, for IBIT specifically in the CF Benchmarks dataset. Aggregate investment-advisor holdings increased from roughly 38 million shares in Q4 2024 to more than 93 million shares in Q4 2025, a cumulative increase of 145%.

How much did BlackRock increase its Bitcoin ETF position?

Two figures describe different periods. BlackRock reported a roughly $217 million position in Q1 2025. Across Q4 2024 to Q4 2025, CF Benchmarks reported its proprietary IBIT holdings rising from about 3 million to 12.8 million shares, a 328% increase.

How much Bitcoin ETF exposure did Abu Dhabi's Mubadala hold?

Mubadala's reported position reached about $411 million in Q1 2025. By Q4 2025, its IBIT holdings had increased 46% quarter over quarter to approximately 12.7 million shares, worth around $630 million at December 31, 2025.