Who owns BRUN
Which tracked institutional funds hold BRUN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BRUN company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
BRUN’s largest tracked holder by dollar value, TOMS Capital Investment Management LP, sizes it at 6.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 6.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BRUN divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Only one quarter (2026-Q2) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| TOMS Capital Investment Management LP new | 3,125,000 | $121M | 20.0% | 2026-Q2 |
| FMR LLC new | 1,782,250 | $69M | 11.4% | 2026-Q2 |
| CITADEL ADVISORS LLC new | 1,320,722 | $51M | 8.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. new | 1,250,546 | $49M | 8.0% | 2026-Q2 |
| UBS Group AG new | 860,043 | $33M | 5.5% | 2026-Q2 |
| AWM Investment Company, Inc. new | 813,739 | $32M | 5.2% | 2026-Q2 |
| Hiddenite Capital Partners LP new | 750,000 | $29M | 4.8% | 2026-Q2 |
| Capricorn Fund Managers Ltd new | 750,000 | $29M | 4.8% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP new | 619,239 | $24M | 4.0% | 2026-Q2 |
| Yorkville Advisors Global, LP new | 582,367 | $23M | 3.7% | 2026-Q2 |
| MORGAN STANLEY new | 490,680 | $19M | 3.1% | 2026-Q2 |
| SCOGGIN MANAGEMENT LP new | 342,500 | $13M | 2.2% | 2026-Q2 |
| Magnetar Financial LLC new | 291,975 | $11M | 1.9% | 2026-Q2 |
| BlackRock, Inc. new | 273,575 | $11M | 1.8% | 2026-Q2 |
| Linden Advisors LP new | 191,707 | $7M | 1.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC new | 157,105 | $6M | 1.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 150,150 | $6M | 1.0% | 2026-Q2 |
| Periscope Capital Inc. new | 127,988 | $4M | 0.7% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 113,368 | $4M | 0.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC new | 110,357 | $4M | 0.7% | 2026-Q2 |
| NEXT CENTURY GROWTH INVESTORS LLC new | 105,506 | $4M | 0.7% | 2026-Q2 |
| FirstWave Capital Management LLC new | 88,631 | $3M | 0.6% | 2026-Q2 |
| JANE STREET GROUP, LLC new | 83,488 | $3M | 0.5% | 2026-Q2 |
| BARCLAYS PLC new | 82,512 | $3M | 0.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC new | 80,539 | $3M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO new | 70,912 | $3M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ new | 65,790 | $3M | 0.4% | 2026-Q2 |
| STATE STREET CORP new | 62,900 | $2M | 0.4% | 2026-Q2 |
| CITIGROUP INC new | 62,688 | $2M | 0.4% | 2026-Q2 |
| NOMURA HOLDINGS INC new | 60,869 | $2M | 0.4% | 2026-Q2 |
| GROUP ONE TRADING LLC new | 53,418 | $2M | 0.3% | 2026-Q2 |
| LPL Financial LLC new | 52,540 | $2M | 0.3% | 2026-Q2 |
| Murchinson Ltd. new | 52,000 | $2M | 0.3% | 2026-Q2 |
| XTX Topco Ltd new | 51,993 | $2M | 0.3% | 2026-Q2 |
| BlueCrest Capital Management Ltd new | 50,000 | $2M | 0.3% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP new | 50,000 | $2M | 0.3% | 2026-Q2 |
| Kestra Advisory Services, LLC new | 36,625 | $1M | 0.2% | 2026-Q2 |
| IMC-Chicago, LLC new | 35,814 | $1M | 0.2% | 2026-Q2 |
| WEXFORD CAPITAL LP new | 35,000 | $1M | 0.2% | 2026-Q2 |
| NORTHERN TRUST CORP new | 29,733 | $1M | 0.2% | 2026-Q2 |
| Galaxy Digital Capital Management GP LLC new | 28,209 | $1M | 0.2% | 2026-Q2 |
| Cedar Wealth Management, LLC new | 26,878 | $1M | 0.2% | 2026-Q2 |
| Feynman Point Asset Management LLC new | 26,700 | $1M | 0.2% | 2026-Q2 |
| Fund 1 Investments, LLC new | 25,898 | $1M | 0.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC new | 23,915 | $928K | 0.2% | 2026-Q2 |
| Alyeska Investment Group, L.P. new | 19,707 | $765K | 0.1% | 2026-Q2 |
| Diametric Capital, LP new | 17,500 | $679K | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC new | 15,183 | $589K | 0.1% | 2026-Q2 |
| Panoramic Capital, LLC new | 15,000 | $582K | 0.1% | 2026-Q2 |
| Concentric Capital Strategies, LP new | 14,686 | $570K | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA new | 13,150 | $510K | 0.1% | 2026-Q2 |
| Kazazian Asset Management, LLC new | 13,044 | $506K | 0.1% | 2026-Q2 |
| WINTON GROUP Ltd new | 10,600 | $411K | 0.1% | 2026-Q2 |
| OPPENHEIMER & CO INC new | 8,500 | $330K | 0.1% | 2026-Q2 |
| Harbour Capital Advisors, LLC new | 7,800 | $222K | 0.0% | 2026-Q2 |
| Curi Capital, LLC new | 7,650 | $297K | 0.0% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC new | 6,764 | $263K | 0.0% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC new | 6,102 | $237K | 0.0% | 2026-Q2 |
| Clearline Capital LP new | 5,960 | $231K | 0.0% | 2026-Q2 |
| Accel Wealth Management new | 5,706 | $221K | 0.0% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 5,200 | $202K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC new | 5,165 | $200K | 0.0% | 2026-Q2 |
| Activest Wealth Management new | 2,100 | $82K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) new | 2,006 | $78K | 0.0% | 2026-Q2 |
| Global Retirement Partners, LLC new | 2,000 | $78K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. new | 1,800 | $70K | 0.0% | 2026-Q2 |
| Rockefeller Capital Management L.P. new | 1,690 | $66K | 0.0% | 2026-Q2 |
| Larson Financial Group LLC new | 1,400 | $54K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS new | 1,261 | $49K | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN new | 1,150 | $45K | 0.0% | 2026-Q2 |
| Persistent Asset Partners Ltd new | 1,079 | $42K | 0.0% | 2026-Q2 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 1,000 | $39K | 0.0% | 2026-Q2 |
| Game Plan Financial Advisors, LLC new | 439 | $17K | 0.0% | 2026-Q2 |
| Global Trust Asset Management, LLC new | 200 | $8K | 0.0% | 2026-Q2 |
| MCF Advisors LLC new | 144 | $6K | 0.0% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC new | 60 | $2K | 0.0% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC new | 30 | $1K | 0.0% | 2026-Q2 |
| Friedenthal Financial new | 1 | $30 | 0.0% | 2026-Q2 |
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.