Filing Flows › Boost Run (BRUN) › Who owns the stock
Who owns Boost Run (BRUN) stock
79 funds reported Boost Run (BRUN) shares in their latest 13F filings, worth $18.6B in all. The largest holder is Harraden Circle Investments, LLC ($18.1B). Last quarter 76 funds added to their stakes and 0 cut them.
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| Harraden Circle Investments, LLC | 466,375 | $18.1B | new | 2026-06-30 |
| Toms Capital Investment Management LP | 3,125,000 | $121M | new | 2026-06-30 |
| FMR LLC | 1,782,250 | $69.2M | new | 2026-06-30 |
| Citadel Advisors LLC | 1,320,722 | $51.3M | new | 2026-06-30 |
| D. E. Shaw | 1,250,546 | $48.5M | new | 2026-06-30 |
| UBS Group AG | 860,043 | $33.4M | new | 2026-06-30 |
| Wellington Management Group LLP | 619,239 | $24.0M | new | 2026-06-30 |
| Morgan Stanley | 490,680 | $19.0M | new | 2026-06-30 |
| Scoggin Management LP | 342,500 | $13.3M | new | 2026-06-30 |
| Magnetar Financial LLC | 291,975 | $11.3M | new | 2026-06-30 |
| BlackRock | 273,575 | $10.6M | new | 2026-06-30 |
| Hiddenite Capital Partners LP | 500,000 | $8.2M | decrease | 2026-09-30 |
| Capricorn Fund Managers | 500,000 | $8.2M | decrease | 2026-09-30 |
| Linden Advisors LP | 191,707 | $6.7M | new | 2026-06-30 |
| Geode Capital Management, LLC | 157,105 | $6.1M | new | 2026-06-30 |
Boost Run's latest quarter
Boost Run, Q2 2026: revenue $31.1M (+270% year over year), operating margin -41.4%, net loss $75.0M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most BRUN stock?
By the latest 13F filings: Harraden Circle Investments, LLC ($18.1B); Toms Capital Investment Management LP ($121M); FMR LLC ($69.2M); Citadel Advisors LLC ($51.3M); D. E. Shaw ($48.5M).
What is the short interest in BRUN?
6,856,265 shares were sold short at the 2026-10-15 settlement, 37.74% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.