Boost Run Inc. (BRUN) Ownership
BRUN ownership summary
as of October 18, 2026- Institutions
- 39.6% of shares outstanding
- Insiders
- 79.49% of shares outstanding
- Shares outstanding
- 50.0M
- Float
- 28.7M shares available to trade
- Short interest
- — 5.0M shares short
- Days to cover
- 2.35 short interest up 1.8% vs prior month
- Institutions 39.56%
- Insiders 79.49%
BRUN top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | TOMS Capital Investment Management LP | 3.93% | 3.1M | $27.8M | +3.1M (0.0%) | June 30, 2026 |
| 2 | FMR Inc | 2.24% | 1.8M | $15.8M | +1.8M (0.0%) | June 30, 2026 |
| 3 | Citadel Advisors Llc | 1.66% | 1.3M | $11.7M | +1.3M (0.0%) | June 30, 2026 |
| 4 | D. E. Shaw & Co LP | 1.57% | 1.3M | $11.1M | +1.3M (0.0%) | June 30, 2026 |
| 5 | UBS Group AG | 1.08% | 860K | $7.6M | +860,043 (0.0%) | June 30, 2026 |
| 6 | Awm Investment Company Inc | 1.02% | 814K | $7.2M | +813,739 (0.0%) | June 30, 2026 |
| 7 | Hiddenite Capital Partners LP | 0.94% | 750K | $6.7M | +750,000 (0.0%) | June 30, 2026 |
| 8 | Capricorn Fund Managers Ltd | 0.94% | 750K | $6.7M | +750,000 (0.0%) | June 30, 2026 |
| 9 | Wellington Management Company LLP | 0.78% | 619K | $5.5M | +619,239 (0.0%) | June 30, 2026 |
| 10 | Yorkville Advisors Global, LP | 0.73% | 582K | $5.2M | +582,367 (0.0%) | June 30, 2026 |
| 11 | Morgan Stanley - Brokerage Accounts | 0.62% | 491K | $4.4M | +490,680 (0.0%) | June 30, 2026 |
| 12 | Harraden Circle Investments LLC | 0.59% | 466K | $4.1M | +466,375 (0.0%) | June 30, 2026 |
| 13 | SCOGGIN LLC | 0.43% | 342K | $3.0M | +342,500 (0.0%) | June 30, 2026 |
| 14 | Magnetar Financial LLC | 0.37% | 292K | $2.6M | +291,975 (0.0%) | June 30, 2026 |
| 15 | BlackRock Inc | 0.34% | 274K | $2.4M | +273,575 (0.0%) | June 30, 2026 |
| 16 | Linden Advisors LLC | 0.24% | 192K | $1.7M | +191,707 (0.0%) | June 30, 2026 |
| 17 | Geode Capital Management, LLC | 0.20% | 157K | $1.4M | +157,105 (0.0%) | June 30, 2026 |
| 18 | Vanguard Capital Management, LLC | 0.19% | 150K | $1.3M | +150,150 (0.0%) | June 30, 2026 |
| 19 | Periscope Capital Inc. | 0.16% | 128K | $1.1M | +127,988 (0.0%) | June 30, 2026 |
| 20 | Susquehanna International Group, LLP | 0.14% | 113K | $1.0M | +113,368 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 20 holders added 14.5M shares and 0 cut 0.
BRUN top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 0.65% | 496K | $4.4M | −5,696 (−1.1%) | September 30, 2026 |
| 2 | Strategic Advisers Fidelity US TtlStk | 0.56% | 427K | $3.8M | +79,500 (+22.9%) | August 31, 2026 |
| 3 | Fidelity Stock Selector Small Cap | 0.54% | 410K | $3.6M | +169,137 (+70.2%) | July 31, 2026 |
| 4 | Fidelity Advisor Small Cap I | 0.48% | 368K | $3.3M | +296,913 (+416.7%) | July 31, 2026 |
| 5 | Fidelity Small Cap Stock | 0.39% | 300K | $2.7M | +184,700 (+160.9%) | July 31, 2026 |
| 6 | Fidelity Small Cap Discovery | 0.38% | 293K | $2.6M | +70,076 (+31.4%) | July 31, 2026 |
| 7 | Fidelity Series Small Cap Opps | 0.35% | 269K | $2.4M | +124,533 (+86.2%) | July 31, 2026 |
| 8 | Fidelity Series Small Cap Discovery | 0.34% | 256K | $2.3M | +56,800 (+28.5%) | July 31, 2026 |
| 9 | Defiance AI & Power Infrastructure ETF | 0.23% | 173K | $1.5M | +264 (+0.2%) | September 30, 2026 |
| 10 | Fidelity Small Cap Growth | 0.17% | 132K | $1.2M | — | July 31, 2026 |
| 11 | Schwab US Small-Cap ETF™ | 0.17% | 129K | $1.1M | +81 (+0.1%) | September 30, 2026 |
| 12 | iShares Russell 2000 Growth ETF | 0.13% | 99K | $881,355 | −125 (−0.1%) | September 30, 2026 |
| 13 | iShares Russell 2000 Value ETF | 0.11% | 81K | $717,885 | +122 (+0.2%) | September 30, 2026 |
| 14 | State Street® Galaxy HdgDgtlAstEcosysETF | 0.10% | 76K | $672,653 | — | September 30, 2026 |
| 15 | Fidelity Small Cap Growth K6 | 0.09% | 69K | $609,854 | — | July 31, 2026 |
| 16 | Fidelity Extended Market Index | 0.09% | 66K | $585,024 | +1,420 (+2.2%) | August 31, 2026 |
| 17 | Hartford Small Cap Growth HLS IA | 0.08% | 58K | $516,642 | +10,087 (+21.0%) | August 31, 2026 |
| 18 | Roundhill Neocloud ETF | 0.04% | 33K | $296,935 | +1,148 (+3.6%) | September 30, 2026 |
| 19 | Hartford Small Cap Growth Y | 0.04% | 29K | $257,774 | +5,008 (+20.9%) | August 31, 2026 |
| 20 | Fidelity Total Market Index | 0.03% | 25K | $221,459 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
Who owns BRUN
Institutional investors own 39.6% of Boost Run's shares and insiders 79.49%. The largest holder is TOMS Capital Investment Management LP with 3.93% of the shares (3.1M), as of June 30, 2026. Among the top 20 institutions, 20 added shares and 0 reduced their stake in the latest filings.
Related: BRUN analyst forecast, BRUN key metrics. See the BRUN stock overview for the latest quote and news.
BRUN ownership FAQ
Who owns the most Boost Run stock?
The largest shareholders of Boost Run are TOMS Capital Investment Management LP (3.93%), FMR Inc (2.24%), Citadel Advisors Llc (1.66%), D. E. Shaw & Co LP (1.57%), UBS Group AG (1.08%).
What percentage of Boost Run is owned by institutions?
Institutions hold 39.6% of Boost Run's shares outstanding; insiders hold 79.49%.
Which funds own Boost Run?
The largest fund holders of Boost Run are iShares Russell 2000 ETF (0.65%), Strategic Advisers Fidelity US TtlStk (0.56%), Fidelity Stock Selector Small Cap (0.54%), Fidelity Advisor Small Cap I (0.48%), Fidelity Small Cap Stock (0.39%).
How many shares of Boost Run are outstanding?
Boost Run has 50.0M shares outstanding, of which 28.7M are in the public float.