BRUN · Boost Run Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 97 13F filersWho Holds BRUN
Last 2 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 92 filers, like-for-like change —.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 59.3% | 45 | new |
| Exempt adviser | 6.8% | 6 | new |
| Adviser | 0.6% | 1 | new |
| Bank | 6.2% | 8 | new |
| Broker-dealer | 0.6% | 2 | new |
| Non-US | 0.0% | 1 | new |
| Holding company | 16.8% | 7 | new |
| Unknown | 9.8% | 22 | new |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 6.6% | 8 | new |
| Systematic-like | 25.8% | 16 | new |
| Concentrated | 26.0% | 19 | new |
| Diversified active | 41.6% | 49 | new |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 16.4% | 25 | new |
| Medium turnover | 21.6% | 18 | new |
| High turnover | 60.1% | 42 | new |
| Unknown | 1.8% | 7 | new |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 35.6% | 22 | new |
| Medium horizon | 10.1% | 13 | new |
| Long horizon | 44.4% | 42 | new |
| Unknown | 9.9% | 15 | new |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 15.5% | 26 | new |
| $1B to $10B | 33.8% | 30 | new |
| $10B to $100B | 10.1% | 11 | new |
| $100B or more | 40.6% | 25 | new |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.3% | 12 | new |
| Pooled investment vehicles | 57.0% | 29 | new |
| Registered funds and BDCs | 2.0% | 3 | new |
| Pension and profit sharing plans | 0.0% | 0 | — |
| Other investment advisers | 0.0% | 0 | — |
| Diversified | 0.0% | 1 | new |
| Unknown | 40.7% | 47 | new |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 60.2% | 32 | new |
| Private equity funds | 0.0% | 1 | new |
| Real estate funds | 0.0% | 1 | new |
| Other private funds | 0.0% | 1 | new |
| Mixed private funds | 1.8% | 1 | new |
| Private funds, type not stated | 1.7% | 2 | new |
| No private funds | 2.3% | 13 | new |
| Unknown | 33.9% | 41 | new |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 87.8% | 80 | new |
| Outside the US | 12.2% | 12 | new |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F.
Conviction and Crowding
81 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 100.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies BRUN's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | SHAZ SharonAI Holdings Inc. | 6 |
| 2 | CTRN Citi Trends Inc | 3 |
| 3 | GMTL Guardian Metal Resources PLC | 3 |
| 4 | NWAX New America Acquisition I Corp. | 4 |
| 5 | REAL TheRealReal, Inc. | 4 |
| 6 | KOPN Kopin Corp | 4 |
| 7 | AADX Applied Aerospace & Defense, Inc. | 3 |
| 8 | GLAS Glass House Brands Inc. | 3 |
| 9 | BLND Blend Labs, Inc. | 3 |
| 10 | RTAC Renatus Tactical Acquisition Corp I | 3 |
Shareholder Targets
13F filers that own its peers but not BRUN, quarter ended Jun 30, 2026Found through its holder-overlap peers: SHAZ, CTRN, GMTL, NWAX, REAL, KOPN, AADX, GLAS, BLND, RTAC, LPTH, GLXY, CAES, AEXA, CEPV, CEPF, CLSK, OUST, BTDR, PTON. 1,122 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active | $713,583,145 12 held | GLXY, CLSK, PTON |
| 2 | Situational Awareness LP Registered adviser, Concentrated | $690,038,004 3 held | SHAZ, CLSK, BTDR |
| 3 | Capital Research Global Investors Adviser, Diversified active | $501,198,766 1 held | GLXY |
| 4 | DNB Asset Management AS Adviser, Diversified active | $234,913,772 6 held | PTON, OUST, LPTH |
| 5 | LONE PINE CAPITAL LLC Registered adviser, Diversified active | $213,833,543 2 held | BTDR, SHAZ |
| 6 | DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active | $204,476,545 6 held | CLSK, OUST, CTRN |
| 7 | AMERICAN CENTURY COMPANIES INC Unknown, Diversified active | $177,386,612 7 held | REAL, AADX, CLSK |
| 8 | Invesco Ltd. Adviser, Diversified active | $177,260,761 10 held | GLXY, CLSK, PTON |
| 9 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $175,693,406 6 held | PTON, AADX, CLSK |
| 10 | Sachem Head Capital Management LP Registered adviser, Concentrated | $152,907,450 1 held | BTDR |
Fund Ownership of BRUN by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 0.20% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.01% | 8,460 |
| Index ETFs | 0.19% | 150,190 |
| Active ETFs | 0.00% | 0 |
| Active funds | 0.02% | 17,300 |
| Unclassified | 0.00% | 0 |
| All registered funds | 0.22% | 175,950 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid TOMS Capital Investment Management LP Registered adviser | $121,281,250 | 16.65% | 3,125,000 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $69,169,121 | 9.50% | 1,782,250 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $51,257,220 | 7.04% | 1,320,722 | Shares | 2026-09-02 | |
| Mega D. E. Shaw & Co., Inc. | $48,533,690 | 6.66% | 1,250,546 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $33,378,267 | 4.58% | 860,043 | Shares | 2026-08-13 | |
| Mid AWM Investment Company, Inc. Registered adviser | $31,581,210 | 4.34% | 813,739 | Shares | 2026-08-14 | |
| Mid Hiddenite Capital Partners LP Registered adviser | $29,107,500 | 4.00% | 750,000 | Shares | 2026-08-13 | |
| Mid Capricorn Fund Managers Ltd Exempt adviser | $29,107,500 | 4.00% | 750,000 | Shares | 2026-07-24 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $28,075,154 | 3.85% | 723,400 | Put | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $24,032,663 | 3.30% | 619,239 | Shares | 2026-08-14 | |
| Micro Yorkville Advisors Global, LP Registered adviser | $22,601,663 | 3.10% | 582,367 | Shares | 2026-08-06 | |
| Mega MORGAN STANLEY Holding company | $19,043,289 | 2.61% | 490,680 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $18,345,487 | 2.52% | 472,700 | Call | 2026-08-14 | |
| Small Harraden Circle Investments, LLC Registered adviser | $18,100,013 | 2.49% | 466,375 | Shares | 2026-08-14 | |
| Small SCOGGIN MANAGEMENT LP Registered adviser | $13,292,425 | 1.83% | 342,500 | Shares | 2026-08-14 | |
| Mid Magnetar Financial LLC Registered adviser | $11,331,549 | 1.56% | 291,975 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $11,138,470 | 1.53% | 287,000 | Put | 2026-09-02 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $11,014,278 | 1.51% | 283,800 | Call | 2026-09-02 | |
| Mega BlackRock, Inc. Holding company | $10,617,445 | 1.46% | 273,575 | Shares | 2026-08-07 | |
| Small SCOGGIN MANAGEMENT LP Registered adviser | $8,732,250 | 1.20% | 225,000 | Put | 2026-08-14 | |
| Mid Linden Advisors LP Registered adviser | $7,440,148 | 1.02% | 191,707 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $7,141,040 | 0.98% | 184,000 | Put | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $6,097,244 | 0.84% | 157,105 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $5,968,978 | 0.82% | 153,800 | Call | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $5,827,321 | 0.80% | 150,150 | Shares | 2026-08-13 | |
| Mid Periscope Capital Inc. Exempt adviser | $4,967,214 | 0.68% | 127,988 | Shares | 2026-08-11 | |
| Small SCOGGIN MANAGEMENT LP Registered adviser | $4,851,250 | 0.67% | 125,000 | Call | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,399,812 | 0.60% | 113,368 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $4,282,955 | 0.59% | 110,357 | Shares | 2026-08-14 | |
| Mid NEXT CENTURY GROWTH INVESTORS LLC Adviser | $4,094,687 | 0.56% | 105,506 | Shares | 2026-08-14 | |
| Large Caption Management, LLC Registered adviser | $3,881,000 | 0.53% | 100,000 | Put | 2026-08-14 | |
| Small FirstWave Capital Management LLC Exempt adviser | $3,439,769 | 0.47% | 88,631 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $3,240,168 | 0.44% | 83,488 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $3,202,290 | 0.44% | 82,512 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $3,125,718 | 0.43% | 80,539 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $2,752,094 | 0.38% | 70,912 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $2,553,309 | 0.35% | 65,790 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $2,441,149 | 0.34% | 62,900 | Shares | 2026-09-22 | |
| Mega CITIGROUP INC Bank | $2,432,921 | 0.33% | 62,688 | Shares | 2026-08-03 | |
| Large NOMURA HOLDINGS INC | $2,362,325 | 0.32% | 60,869 | Shares | 2026-08-14 | |
| Mid GROUP ONE TRADING LLC Broker-dealer | $2,073,152 | 0.28% | 53,418 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC Broker-dealer | $2,039,077 | 0.28% | 52,540 | Shares | 2026-08-07 | |
| Small Murchinson Ltd. Exempt adviser | $2,018,120 | 0.28% | 52,000 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $2,017,848 | 0.28% | 51,993 | Shares | 2026-08-14 | |
| Mid MOORE CAPITAL MANAGEMENT, LP Registered adviser | $1,940,500 | 0.27% | 50,000 | Shares | 2026-08-14 | |
| Mid BlueCrest Capital Management Ltd | $1,940,500 | 0.27% | 50,000 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $1,858,999 | 0.26% | 47,900 | Call | 2026-08-13 | |
| Large Kestra Advisory Services, LLC | $1,421,416 | 0.20% | 36,625 | Shares | 2026-07-28 | |
| Large IMC-Chicago, LLC | $1,389,941 | 0.19% | 35,814 | Shares | 2026-08-06 | |
| Small WEXFORD CAPITAL LP Registered adviser | $1,358,350 | 0.19% | 35,000 | Shares | 2026-08-14 | |
| Large Walleye Trading LLC | $1,338,945 | 0.18% | 34,500 | Call | 2026-08-03 | |
| Mega NORTHERN TRUST CORP Bank | $1,153,937 | 0.16% | 29,733 | Shares | 2026-08-13 | |
| Small Galaxy Digital Capital Management GP LLC | $1,094,791 | 0.15% | 28,209 | Shares | 2026-08-14 | |
| Small Cedar Wealth Management, LLC Registered adviser | $1,043,135 | 0.14% | 26,878 | Shares | 2026-08-12 | |
| Micro Feynman Point Asset Management LLC Registered adviser | $1,036,227 | 0.14% | 26,700 | Shares | 2026-08-14 | |
| Small Fund 1 Investments, LLC Holding company | $1,005,101 | 0.14% | 25,898 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $928,141 | 0.13% | 23,915 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $764,828 | 0.11% | 19,707 | Shares | 2026-08-14 | |
| Small Diametric Capital, LP | $679,175 | 0.09% | 17,500 | Shares | 2026-08-14 | |
| Small Arrington Capital Management, LLC Registered adviser | $620,960 | 0.09% | 16,000 | Call | 2026-08-11 | |
| Mid SIMPLEX TRADING, LLC | $589,252 | 0.08% | 15,183 | Shares | 2026-08-12 | |
| Small Panoramic Capital, LLC Registered adviser | $582,150 | 0.08% | 15,000 | Shares | 2026-08-14 | |
| Mid Concentric Capital Strategies, LP Registered adviser | $569,963 | 0.08% | 14,686 | Shares | 2026-08-14 | |
| Mega ROYAL BANK OF CANADA Bank | $510,351 | 0.07% | 13,150 | Shares | 2026-08-14 | |
| Small Kazazian Asset Management, LLC Registered adviser | $506,237 | 0.07% | 13,044 | Shares | 2026-08-10 | |
| Mid WINTON GROUP Ltd | $411,386 | 0.06% | 10,600 | Shares | 2026-08-07 | |
| Small SYMMETRY PEAK MANAGEMENT LLC Exempt adviser | $368,695 | 0.05% | 9,500 | Call | 2026-08-14 | |
| Mid OPPENHEIMER & CO INC | $329,885 | 0.05% | 8,500 | Shares | 2026-08-03 | |
| Mid Curi Capital, LLC Registered adviser | $296,896 | 0.04% | 7,650 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $271,670 | 0.04% | 7,000 | Put | 2026-08-14 | |
| Mid PRELUDE CAPITAL MANAGEMENT, LLC Registered adviser | $262,510 | 0.04% | 6,764 | Shares | 2026-08-14 | |
| Mid MANGROVE PARTNERS IM, LLC Registered adviser | $236,818 | 0.03% | 6,102 | Shares | 2026-08-14 | |
| Mid Clearline Capital LP | $231,307 | 0.03% | 5,960 | Shares | 2026-08-14 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $201,812 | 0.03% | 5,200 | Shares | 2026-08-14 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $200,453 | 0.03% | 5,165 | Shares | 2026-08-13 | |
| Mid Silicon Valley Capital Partners Registered adviser | $111,384 | 0.02% | 2,870 | Shares | 2026-09-21 | |
| Mid Tower Research Capital LLC (TRC) | $77,852 | 0.01% | 2,006 | Shares | 2026-08-11 | |
| Mid Global Retirement Partners, LLC | $77,620 | 0.01% | 2,000 | Shares | 2026-08-06 | |
| Large OSAIC HOLDINGS, INC. Holding company | $69,858 | 0.01% | 1,800 | Shares | 2026-08-14 | |
| Large Rockefeller Capital Management L.P. Registered adviser | $65,588 | 0.01% | 1,690 | Shares | 2026-08-13 | |
| Mid Larson Financial Group LLC Registered adviser | $54,334 | 0.01% | 1,400 | Shares | 2026-08-14 | |
| Large Walleye Trading LLC | $50,453 | 0.01% | 1,300 | Put | 2026-08-03 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $48,939 | 0.01% | 1,261 | Shares | 2026-08-13 | |
| Mid State of Alaska, Department of Revenue | $45,474 | 0.01% | 2,756 | Shares | 2026-10-15 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $44,631 | 0.01% | 1,150 | Shares | 2026-08-14 | |
| Small Persistent Asset Partners Ltd Exempt adviser | $41,875 | 0.01% | 1,079 | Shares | 2026-08-07 | |
| Mid HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser | $38,810 | 0.01% | 1,000 | Shares | 2026-08-14 | |
| Small Game Plan Financial Advisors, LLC Registered adviser | $17,037 | 0.00% | 439 | Shares | 2026-08-07 | |
| Small Skaana Management L.P. Registered adviser | $15,524 | 0.00% | 400 | Call | 2026-08-14 | |
| Mid MCF Advisors LLC Registered adviser | $5,588 | 0.00% | 144 | Shares | 2026-08-12 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC Registered adviser | $2,328 | 0.00% | 60 | Shares | 2026-08-10 | |
| Mid GAMMA Investing LLC Registered adviser | $1,435 | 0.00% | 87 | Shares | 2026-10-08 | |
| Large NISA INVESTMENT ADVISORS, LLC Registered adviser | $1,171 | 0.00% | 71 | Shares | 2026-10-20 | |
| Large Steward Partners Investment Advisory, LLC Registered adviser | $1,164 | 0.00% | 30 | Shares | 2026-08-13 | |
| Small FNY Investment Advisers, LLC | $660 | 0.00% | 40 | Shares | 2026-10-16 | |
| Large Farther Finance Advisors, LLC Registered adviser | $462 | 0.00% | 28 | Shares | 2026-10-08 | |
| Small Friedenthal Financial | $38 | 0.00% | 1 | Shares | 2026-07-13 | |
| Mid TORNO CAPITAL, LLC BRUNW | — | — | 15,259 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser BRUNW | — | — | 200,000 | Call | 2026-08-14 | |
| Mid Global Retirement Partners, LLC BRUNW | — | — | 4 | Shares | 2026-08-06 |
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