Jane Street Group held 7.01 million shares of Fidelity’s Wise Origin Bitcoin Fund (FBTC) at 30 September, worth $509.2 million, up from 886,736 shares three months earlier, according to its Form 13F filed with the SEC on 12 November. Its stake in BlackRock’s iShares Bitcoin Trust (IBIT) fell 19% to 20.22 million shares, worth $957.3 million. CryptoWatchDesk last covered IBIT’s flows on Thursday, when ten straight outflows from IBIT pushed the fund’s losses since 30 October past $2.2 billion.
On these figures the filing reads more like a shift between issuers than a retreat from bitcoin funds. Adding up the 11 spot bitcoin ETFs we matched in the filing, the reported value rose to about $1.89 billion from about $0.98 billion at 30 June, though part of that is price: the filing implies IBIT’s reference price rose from $33.29 to $47.34 over the quarter. Share counts tell the cleaner story. ARK 21Shares’ ARKB went to 11.69 million shares from 2.70 million, and Morgan Stanley’s new bitcoin fund (MSBT) appeared with 478,351.
| Position (common shares) | 30 Jun shares | 30 Sep shares | 30 Sep value |
|---|---|---|---|
| IBIT (BlackRock) | 24,878,191 | 20,221,140 | $957.3M |
| FBTC (Fidelity) | 886,736 | 7,010,008 | $509.2M |
| ARKB (ARK 21Shares) | 2,700,151 | 11,689,194 | $323.7M |
| ETHA (BlackRock ether) | 7,606,021 | 15,438,249 | $310.6M |
| FETH (Fidelity ether) | 90,661 | 3,283,107 | $87.2M |
Source: Jane Street Group, LLC Form 13F-HR for 30 June and 30 September 2026; values are as reported in the filings.
Ether funds followed the same pattern: the ETHA stake roughly doubled and the FETH stake rose from about 91,000 shares to 3.28 million. The filing also lists options on IBIT: calls on 34.97 million underlying shares ($1.66 billion) and puts on 45.32 million ($2.15 billion), against 34.03 million and 34.80 million at 30 June.
The limits matter. A 13F shows long positions and listed options at one date, 30 September, six weeks before it was filed; it does not show short positions, hedges, or why a holding changed. Jane Street is a market maker and trading firm, so a position can reflect inventory or hedging rather than a view on bitcoin, and options are reported at the value of the underlying shares, not as net exposure.
For the basics, see how a spot bitcoin ETF works. Cointelegraph reported the same FBTC and IBIT figures on Friday.
The filing reports $1.19 trillion in total across 14,764 entries.
This article is for information only and is not investment advice.