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BRUN · Boost Run Inc. · Holdings

Track BRUN — free
$8.94 +0.47 (+5.55%)
Market Cap
$680.02M
Shares
79.49M
Volume · Oct 20 3.44M Avg daily vol (3M) 2.61M

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 holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 97
Total Value: $728,306,589
Total Shares: 21,988,825
Showing 1–100 of 115 holdings by value · page 1 of 2

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 97 13F filers
Top Holder
16.6%
of institutional value
Top 5
49.8%
of institutional value
Top 10
70.7%
of institutional value
HHI
698
Broadly held

Who 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

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, 2026

Measured 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.

Conviction holders
6
7.41% of filers hold it in their top 10
Holders above 5%
3
median weight 0.008%
Crowding
—
the issuer has more than one class of common stock, so its count is the total across classes
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
the issuer has more than one class of common stock, so its count is the total across classes
Top 10 holders
73.6%
of 13F shares, Herfindahl 0.079
Active holders
—
like-for-like share change of active filers
5% stakes on record
8
5 13D, 3 13G (2 institutional, 1 passive, 0 exempt)
How long holders have held it value-weighted 1.0 quarters
Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

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 basis

Estimated, 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 avg cost
$23.90
estimated per share
Quarter-end price
$38.81
implied by 13F values
Estimated gain or loss
+62.4%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

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, 2026

Found 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
1 VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active $713,583,145 12 held
2 Situational Awareness LP Registered adviser, Concentrated $690,038,004 3 held
3 Capital Research Global Investors Adviser, Diversified active $501,198,766 1 held
4 DNB Asset Management AS Adviser, Diversified active $234,913,772 6 held
5 LONE PINE CAPITAL LLC Registered adviser, Diversified active $213,833,543 2 held
6 DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active $204,476,545 6 held
7 AMERICAN CENTURY COMPANIES INC Unknown, Diversified active $177,386,612 7 held
8 Invesco Ltd. Adviser, Diversified active $177,260,761 10 held
9 T. Rowe Price Investment Management, Inc. Adviser, Diversified active $175,693,406 6 held
10 Sachem Head Capital Management LP Registered adviser, Concentrated $152,907,450 1 held

Fund Ownership of BRUN by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index 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.

Showing 100 of 115
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 115 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 2090646 CUSIP 09940T100 13F (30d) 7 filings 7 filers Visit website Investor relations