# ISHARES BITCOIN TRUST ETF PUT

ISHARES BITCOIN TRUST ETF PUT is a security (CUSIP 46438F951) tracked across SEC portfolio filings. 18 institutional managers reported $1.2B on Form 13F as of 2026-06-30.

## Summary

- Issuer: ISHARES BITCOIN TRUST ETF
- Class: PUT
- CUSIP: 46438F951
- 13F holders: 18
- 13F value: $1.2B
- 13F period: 2026-06-30
- N-PORT fund positions: 0

## Top institutional holders (Form 13F)

_Showing 15 of 18 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [SIMPLEX TRADING, LLC](https://search.stillhousedata.com/firm/153585) | CHICAGO, IL | $381.5M | — |
| IMC-Chicago, LLC | CHICAGO, IL | $366.8M | — |
| JPMORGAN CHASE & CO | NEW YORK, NY | $179.2M | — |
| Marathon Trading Investment Management LLC | RADNOR, PA | $129.1M | — |
| [GROUP ONE TRADING, L.P.](https://search.stillhousedata.com/firm/37484) | CHICAGO, IL | $47.2M | — |
| Optiver Holding B.V. | AMSTERDAM, P7 | $41.0M | — |
| [AKUNA SECURITIES LLC](https://search.stillhousedata.com/firm/159041) | CHICAGO, IL | $38.6M | — |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | NEW YORK, NY | $21.8M | — |
| [Aristides Capital LLC](https://search.stillhousedata.com/firm/162368) | LOUISVILLE, KY | $4.5M | — |
| [All Terrain Financial Advisors, LLC](https://search.stillhousedata.com/firm/286683) | COON RAPIDS, MN | $1.5M | — |
| [ParaFi Capital LP](https://search.stillhousedata.com/firm/294670) | NEW YORK, NY | $768K | — |
| [HRT FINANCIAL LP](https://search.stillhousedata.com/firm/152144) | NEW YORK, NY | $25K | 656,200 |
| CHESAPEAKE ASSET MANAGEMENT LLC | NEW YORK, NY | $15K | 30 |
| CMT Capital Markets Trading GmbH | CHICAGO, IL | $10K | — |
| Avenir Tech Ltd | HONG KONG, K3 | $8K | — |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/46438F951.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.