Hedge Funds Unwind Basis Trades, Driving $1.62B Outflows From U.S. Spot Bitcoin ETFs

The headline isn’t the outflow itself—it’s the mechanism. A four-session, $1.62 billion net redemption from U.S. spot Bitcoin ETFs reflects a sharp unwind of the basis trade as carry compresses and macro risk appetite slips.

Flows tell the story. Across four trading days, net redemptions totaled: - Friday: $394.68 million - Tuesday: $483.38 million - Wednesday: $708.71 million - Thursday: $32.11 million

Per SoSoValue, that ranks among the larger and more persistent pullbacks since these funds launched in early 2024. It coincided with Bitcoin losing momentum above $97,000 and sliding to $89,500—down 5.4% week-over-week—as the S&P 500 gapped down nearly 54 points from record levels.

The trigger sits in the plumbing. The Bitcoin basis trade—long spot via ETFs or cash, short CME futures—has seen its implied annualized yield fall to under 5%, down from around 17% a year ago, per Amberdata figures cited by Bitwise CIO Matt Hougan. When carry collapses, hedge funds reduce exposure quickly. Hougan estimates this cohort might be only 10%-20% of ETF holders, yet their speed can overwhelm near-term flows. That’s what the tape just showed.

Why this matters - Microstructure: With contango thinner, the incentive to warehouse spot through ETFs disappears. Authorized participants facilitate redemptions, releasing selling pressure into the spot market and amplifying short-term volatility. - Psychology: As carry fades, fast money pivots from “harvest mode” to “capital preservation,” reinforcing a feedback loop where price weakness validates de-risking. - Business model: This segment was never meant to be the ETF’s foundation. As Hougan notes, durable growth relies on slower, advisor-led allocations—the so-called “slow money.” That pipeline sets the ceiling for organic AUM, but it won’t buffer swift hedge fund rotations day to day. - Market structure ethics: ETFs broaden access, but when vehicles become scaffolding for leveraged or market-neutral strategies, retail holders can experience volatility driven by dynamics they don’t see. Clear communication around flow-sensitive risks is part of the responsibility here.

The macro overlay isn’t helping. A modest pullback in equities from all-time highs has bled into crypto risk. Market participants point to a lack of large-buyer interest at current BTC levels, mirroring a broader risk-off posture across institutional books. Prediction markets echo the shift: users on Myriad now assign a 30% probability that Bitcoin breaks to $69,000, up from 11.6% a week prior.

Policy expectations are the swing factor. Fed leadership is in focus with Chair Powell’s term set to end in May; a more dovish successor could recalibrate rate paths and revive risk appetite. Myriad users currently price a 5% chance that President Donald Trump nominates Kevin Hassett as Fed chair before March, and a 36% chance the Fed cuts by more than 25 basis points before July.

Where could stability return? Two paths stand out: - Carry normalizes: A resurgence in retail optimism steepens futures curves, lifting basis and inviting market-neutral capital back. - Slow money steps in: Advisors re-risk into ETFs as macro visibility improves, absorbing redemptions and anchoring flows.

Hougan remains constructive on setting new cycle highs this year, while conceding the tape looks more like a grind than an easy impulse. That framing feels right. This week’s move isn’t about faith in Bitcoin’s long-term thesis; it’s about the ebb and flow of a carry trade that, for now, pays too little to own.