Major market maker and algorithmic trading firm Jane Street has disclosed a significant position in spot Bitcoin ETFs, exceeding $990 million. According to documents filed with the U.S. Securities and Exchange Commission (SEC), the largest share is in BlackRock's iShares Bitcoin Trust (IBIT). This disclosure is dated June 30 and represents a snapshot of the company's portfolio.
Notably, the data emerged the same week Jane Street confirmed a July loss of $15 billion—its worst result in nearly a decade. However, it is important to understand the context: the 13F form reflects only long positions on a specific date and does not show the current asset structure. For a player like Jane Street, these figures are not so much an investment bet on Bitcoin's rise or fall, but rather an element of inventory management and hedging.
Not a Bet on Growth, but Liquidity Management
Jane Street is not a classic institutional investor with a long-term horizon. Its role is to provide liquidity and act as an authorized participant for several spot Bitcoin ETFs. Therefore, large changes in 13F reports for such market makers more often reflect client demand and hedging, rather than their own expectations about the asset's price. In the first quarter of 2026, the firm reduced its stake in IBIT by 71%, while simultaneously increasing positions in Ether ETFs—a typical example of rebalancing, not a change in conviction.
The growth of the position to $990 million may indicate increased client interest in Bitcoin instruments, but not that Jane Street's management is making a bullish forecast for BTC. At the time of the disclosure, Bitcoin was trading around $64,000, up 1.6% over the day.
Losses and Record Revenue
The bulk of July's losses is tied to Jane Street's stake in the AI-driven hedge fund Situational Awareness. Due to margin calls, the fund was forced to urgently sell shares in late July, and the situation was worsened by failed bets on Asian stock markets. Nevertheless, over the year, Jane Street's trading revenue has already exceeded $40 billion, beating the record $39.6 billion for all of 2025.
The next 13F report, which will show whether the company increased its position after June 30 or fully exited Bitcoin ETFs, will only appear in November. For now, $990 million is just a one-time snapshot that does not prove that Wall Street's largest market maker is betting on a rise in BTC's price.
My analysis: the market tends to overestimate such disclosures, seeing them as a signal from "smart money." In reality, for market makers, such positions are a working tool, not a manifesto. Investors should focus on ETF flows and on-chain data, rather than on isolated 13F forms that lag by months.