Bitcoin ETF Flows: Hedge Funds Cut 28%, Advisors Add 145%

The retreat from Bitcoin ETFs by top hedge funds was decisive. Aggregate allocations among the largest holders fell 28% from the third to the fourth quarter of 2025, according to CF Benchmarks data. This pullback followed a brutal price decline, with Bitcoin down nearly 50% from its October peak above $126,000. Prices have since stabilized near $67,000, a stark contrast to the rally that fueled the initial ETF inflows.

Brevan Howard stands as the lead example of this systematic exit. The firm cut its holdings in the iShares Bitcoin Trust by 86% in the quarter, slashing the value of its spot position from about $2.4 billion to just $275 million. This move made it the largest seller of the spot ETF during the period, a clear signal that the dominant institutional trade was unwinding.

The de-risking was driven by the collapse of a once-lucrative strategy. The Bitcoin basis trade-buying spot ETFs while shorting CME futures-saw its annualized returns fall from double digits to around 4% by mid-February. As more desks crowded the arbitrage, the easy profits vanished, triggering a mechanical unwind of a position that had required no directional view on price.

The New Institutional Base: Advisors Stepping In

While hedge funds were unwinding, a different institutional force was building. Investment advisors increased their holdings in Bitcoin ETFs by 145% over the year, a stark contrast to the 28% cut by hedge funds. This isn't speculative trading; it's a shift toward durable, long-term allocations. Advisors hold for the "long term" and do not trade on volatility, suggesting Bitcoin is being absorbed into core portfolio strategies.

The trend is consistent and cumulative. Advisors have increased their aggregate IBIT positions every quarter for the past year, growing from 38 million shares in Q4 2024 to over 93 million by Q4 2025. This steady, quarter-by-quarter accumulation provides a more stable demand base compared to the volatile, strategy-driven flows of hedge funds. It signals that Bitcoin is moving from a speculative asset to a recognized component of professional model portfolios.

A notable counter-trend move came from Abu Dhabi. While the broader hedge fund complex was exiting, Abu Dhabi increased its position in the IBIT fund by 46% in the fourth quarter of 2025. This adds a layer of non-U.S. institutional demand and suggests some sovereign wealth funds are viewing the current price as a buying opportunity, further diversifying the new base of holders.

Current Flow Trajectory: Five Weeks of Outflows

The outflow trend has now extended for five consecutive weeks, marking the longest streak since early 2025. During the holiday-shortened Presidents' Day week, U.S. spot Bitcoin ETFs recorded about $316 million in net outflows. This persistent selling has erased roughly $3.8 billion from the complex over the five-week period, with total outflows from late January to mid-February reaching about $4.5 billion.

The selling is concentrated in the largest products. Bitcoin and Ether ETFs have posted five straight weeks of redemptions, with the latter shedding approximately $123 million last week. In contrast, Solana and XRP ETFs have bucked the trend, drawing modest inflows of $14.3 million and $1.8 million, respectively. This divergence signals a capital rotation away from BTC and ETH and into newer, altcoin-based products.

The flow data reveals a clear concentration of selling. BlackRock's IBIT was the largest seller last week, with around $303.5 million of net outflows. Over the five-week period, IBIT alone has shed roughly $2.1 billion. This dominance means one firm's risk decisions can tilt the entire flow picture, explaining the sustained outflow streak without a collapse of the ETF structure.