The latest submission of Jane Street's 13F document shows that as at 30 June 2026, the United States Quantified Trading Company had declared a spot ETF share of more than $1 billion in the United States. Among them, the IBIT under the Beled flag is its largest single hold, with a declared value of about $828 million.
This document reflects the late season, rather than Jane Street's current position. Since the 13F only discloses the multiple-head hold of the declared securities, and does not include empty positions and most derivatives, the outside world cannot judge the actual net opening of the company ' s currency by this document alone.
The IBIT holdout is up from last season.
On the basis of the disclosed data, Jane Street maintained a significant increase in the number of IBIT declarations in the second quarter compared to the previous quarter. Previously, as at 31 March, the company had declared approximately 5.9 million IBITs, valued at approximately $225 million; by 30 June, that component had risen to approximately $828 million.
In addition to IBIT, Jane Street holds other spot bitcoin ETFs listed in the United States, including Wise Origin Bitcoin Fund in Fuda and Bitcoin Trust in Greyscale. After the combined calculation, its disclosed related ETF share exceeded $1 billion at the end of the season.
13F doesn't reflect a net opening.
13F is a warehouse document that the United States SEC requires from qualified agency managers on a regular basis to disclose, inter alia, the quantity and end-of-season market value of the declared securities. ETF shares fall within this disclosure, so that the market can see the part of the multiple warehouse held by Jane Street on 30 June.
This type of document does not, however, present a complete trade book. Empty trade would not occur in the 13F and most derivatives would not be included. Even if a partial loss or increase of options were to be declared separately, it would not be possible for the outside world to restore the hedge between the positions and other transactions.
Thus, this document can only show that Jane Street declared at the end of the season that the excess share of the real bitcoin ETF exceeded $1 billion and could not be equated with its direct holding of the equivalent bitcoin, nor could it be assumed that it held a risk exposure of the same size that was not hedged.
The agency continues to access the ETF market.
Once again, this disclosure shows that large financial institutions continue to manage transactions, configurations and liquidity through the United States-compliant Bitcoin Fund. As important market and quantitative traders in traded products, Jane Street's related holdouts may also serve market, arbitrage, hedge, etc., without necessarily representing long-term directional bets.
Previously, IBIT had been one of the largest encrypted fund holdings on several occasions in agency disclosure files. Other financial institutions have also disclosed relevant positions through the same channels, such as Barclays, which had declared a related exposure of approximately $131 million in earlier documents.
The report mentions that there is currently no evidence of a separate, clear market response to the document from Bitcoin or related ETF prices. Price trends are usually also influenced by a combination of financial flows, macro-information and general position changes.
The next report looks at September 30th.
Jane Street's next 13F document will have a warehouseshot of the 30 September declaration. The deadline for the third quarter of 2026 is 16 November, as arranged by the United States Securities Commission.