Key Takeaways
- • Leveraged funds cut their net short position in CME Bitcoin futures by 89% from the December 2024 peak, to 2,591 contracts (about 12,955 BTC) as of November 3, 2026, the smallest such position since February 2023.
- • The CME Bitcoin futures basis compressed to 4.8% annualized, offering minimal excess return over US Treasury yields and reducing the incentive for the basis trade.
- • Nine hedge funds, including Millennium Management and Brevan Howard, trimmed about 68,000 BTC (roughly $5.4 billion) in spot Bitcoin ETF exposure between September 2025 and June 2026.
- • CME Bitcoin futures open interest fell to about 17,527 contracts (about 87,635 BTC) by early November 2026, with trading volume also declining.
- • The unwind may make ETF flows a cleaner signal of genuine demand, since some past ETF buying was driven by hedged arbitrage rather than directional views.
Summary
Hedge funds have largely unwound the Bitcoin basis trade, one of the most widely used institutional Bitcoin strategies, according to Crypto Briefing. Leveraged funds cut their net short position in CME Bitcoin futures by 89% from the peak reached in December 2024. As of November 3, 2026, the net short stood at 2,591 contracts, or approximately 12,955 BTC, the smallest such position since February 2023.
The basis trade pairs spot Bitcoin exposure, often held through an ETF, with a short position in CME futures that trades at a premium. Funds earn the spread as the futures contract converges with spot at expiry, largely independent of Bitcoin's price direction. That spread has narrowed sharply: the CME Bitcoin futures basis fell to 4.8% annualized, which the article notes offers minimal excess return over US Treasury yields once operational complexity, margin requirements and crypto-specific risk are considered.
The unwind extends beyond futures. Multi-strategy hedge funds, including Millennium Management and Brevan Howard, reduced spot Bitcoin ETF exposure, with nine funds trimming about 68,000 BTC between September 2025 and June 2026, a position valued at roughly $5.4 billion. CME open interest declined to approximately 17,527 contracts, or about 87,635 BTC, by early November 2026, and trading volume has also fallen.
The article also flags an unusual episode in August 2026, when leveraged funds briefly moved to a net long position on CME Bitcoin futures for the first time, a move described as a potential signal of bullish sentiment. Leveraged funds have historically been structural short sellers in this market, largely due to the basis trade.
Analysts cited by the article suggest the unwind complicates the interpretation of ETF flow data. Because a meaningful share of earlier ETF buying came from hedged funds without a directional view, ETF flows may become a clearer gauge of underlying demand. Some ETF outflows tied to the unwind may reflect dismantling spread trades rather than bearish positioning. The article identifies the basis itself as the key variable to watch: a wider premium could revive the carry trade and attract hedge funds back.
The basis trade pairs spot Bitcoin exposure, often held through an ETF, with a short position in CME futures that trades at a premium. Funds earn the spread as the futures contract converges with spot at expiry, largely independent of Bitcoin's price direction. That spread has narrowed sharply: the CME Bitcoin futures basis fell to 4.8% annualized, which the article notes offers minimal excess return over US Treasury yields once operational complexity, margin requirements and crypto-specific risk are considered.
The unwind extends beyond futures. Multi-strategy hedge funds, including Millennium Management and Brevan Howard, reduced spot Bitcoin ETF exposure, with nine funds trimming about 68,000 BTC between September 2025 and June 2026, a position valued at roughly $5.4 billion. CME open interest declined to approximately 17,527 contracts, or about 87,635 BTC, by early November 2026, and trading volume has also fallen.
The article also flags an unusual episode in August 2026, when leveraged funds briefly moved to a net long position on CME Bitcoin futures for the first time, a move described as a potential signal of bullish sentiment. Leveraged funds have historically been structural short sellers in this market, largely due to the basis trade.
Analysts cited by the article suggest the unwind complicates the interpretation of ETF flow data. Because a meaningful share of earlier ETF buying came from hedged funds without a directional view, ETF flows may become a clearer gauge of underlying demand. Some ETF outflows tied to the unwind may reflect dismantling spread trades rather than bearish positioning. The article identifies the basis itself as the key variable to watch: a wider premium could revive the carry trade and attract hedge funds back.
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