Bitcoin Futures Carry Hits 7.89%, Outpacing Treasuries and Fueling $850M ETF Surge

Woofun AI reports that Bitcoin futures carry trades have overtaken Treasury yields, as institutional arbitrageurs exploit widening basis spreads.

Data compiled from Aug. 7 within a 157-day window reveals that the August contract delivered a gross annualized basis of 7.89%, outperforming September at 6.25% and December at 5.69%. This cash-and-carry strategy involves a spot purchase paired with a short futures contract to capture the premium as prices converge. While Baumann's analysis did not disclose specific roll rules or net-cost series, the CME and BRRNY inputs confirm the yield advantage over government debt benchmarks.

Structurally, the Treasury rate serves as the opportunity-cost benchmark, but desks must account for financing rates, margin, fees, and execution costs on both sides.

Woofun AI data shows that for arbitrage capital to remain engaged, the net spread after these balance-sheet and funding costs must remain positive. Observable traces of this activity include persistent ETF net inflows, rising CME open interest, and increased short futures positioning by traders seeking to lock in the premium.

However, ETF and CFTC aggregates cannot prove trader-level linkage between the spot and futures legs, meaning directional buying can drive prices up even if the carry spread is unattractive. The most reliable institutional gauge remains the net basis after funding costs, analyzed alongside ETF flows and CME positioning rather than in isolation.