Jane Street disclosed a $990 million bitcoin (BTC) exchange-traded fund (ETF) position in a Securities and Exchange Commission (SEC) filing. The filing, dated June 30, shows its largest stake in BlackRock’s iShares Bitcoin Trust (IBIT).
The filing landed the same week Jane Street confirmed a $15 billion trading loss in July. The quantitative trading firm and major market maker called it its worst month in about a decade.
The Jane Street Bitcoin ETF Filing Is Just a Snapshot
The $990 million figure comes from a Form 13F. That filing only captures long ETF positions as of a single date, in this case six weeks ago. It says nothing about what Jane Street holds today.
However, Jane Street is not a directional Bitcoin investor. The firm operates primarily as a market maker and authorized participant across several spot Bitcoin ETFs.
Meanwhile, that pattern has precedent. Jane Street cut its IBIT stake by 71% in the first quarter of 2026. It built up an ether ETF position over the same stretch. That swing looks more like rotating inventory than conviction investing.
Historically, large swings in a market maker’s 13F holdings often reflect hedging flow, not sentiment. A big position can mean client demand for ETF shares just as easily as a bullish view on bitcoin.
BTC traded near $64,000 on Tuesday, up 1.6% over 24 hours, according to BeInCrypto data.
A Rough Month, A Record Year
Reuters traced the loss mainly to Jane Street’s stake in Situational Awareness, an artificial intelligence hedge fund. Margin calls forced Situational Awareness into a fire sale of its stock portfolio in late July. Weak bets in Asian equity markets added to the damage.
In contrast, Jane Street has still posted more than $40 billion in trading revenue this year. That already tops the $39.6 billion record it set in all of 2025.
Whether Jane Street’s position has grown, shrunk, or disappeared since June 30 won’t be clear until its next 13F filing. That filing is due in November. Therefore, the $990 million figure is only a data point right now. It isn’t proof that Wall Street’s biggest market maker is turning bullish on bitcoin.
Source: BeInCrypto
