Boost Run Inc.: which funds bought and sold

Institutions that bought and sold Boost Run shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 77 institutions that filed 13F reports for both quarters added to or opened positions in Boost Run, and 0 cut or closed them. Together they added a net 16.0M shares, — on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 8.8M shares; index fund managers were net buyers of 762K shares. 77 opened a new position and 0 sold out entirely.

Bought, Q2 2026 77 institutions, 77 of them new holders Sold, Q2 2026 0 institutions, 0 of them sold out

Net change, all compared +16.0M shares (—)

Net change, active managers +8.8M shares (—), 16 bought, 0 sold

Buyers versus sellers

institutions compared, 77

77 bought 0 sold

Active managers and hedge funds 16 bought · 0 sold · +8.8M

Index fund managers 6 bought · 0 sold · +762K

Other institutions 55 bought · 0 sold · +6.4M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
TOMS Capital Investment Management LP Hedge fund	+3.1M New position	3.1M	$121M
FMR LLC Active manager	+1.8M New position	1.8M	$69.2M
Citadel Advisors LLC Hedge fund	+1.3M New position	1.3M	$51.3M
D. E. Shaw & Co., Inc. Hedge fund	+1.3M New position	1.3M	$48.5M
UBS Group AG	+860K New position	860K	$33.4M
Awm Investment Company, Inc.	+814K New position	814K	$31.6M
Capricorn Fund Managers Ltd	+750K New position	750K	$29.1M
Hiddenite Capital Partners LP	+750K New position	750K	$29.1M
Wellington Management Group LLP Active manager	+619K New position	619K	$24M
Yorkville Advisors Global, LP	+582K New position	582K	$22.6M
Morgan Stanley	+491K New position	491K	$19M
Harraden Circle Investments, LLC	+466K New position	466K	$18.1M
Scoggin Management LP	+343K New position	343K	$13.3M
Magnetar Financial LLC Hedge fund	+292K New position	292K	$11.3M
Blackrock, Inc. Index funds	+274K New position	274K	$10.6M
Linden Advisors LP Hedge fund	+192K New position	192K	$6.7M
Geode Capital Management, LLC Index funds	+157K New position	157K	$6.1M
Vanguard Capital Management LLC Index funds	+150K New position	150K	$5.8M
Periscope Capital Inc.	+128K New position	128K	$4.3M
Susquehanna International Group, LLP	+113K New position	113K	$4.4M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
TOMS Capital Investment Management LP Hedge fund	+3.1M New position	3.1M	$121M
FMR LLC Active manager	+1.8M New position	1.8M	$69.2M
Citadel Advisors LLC Hedge fund	+1.3M New position	1.3M	$51.3M
D. E. Shaw & Co., Inc. Hedge fund	+1.3M New position	1.3M	$48.5M
Wellington Management Group LLP Active manager	+619K New position	619K	$24M
Magnetar Financial LLC Hedge fund	+292K New position	292K	$11.3M
Linden Advisors LP Hedge fund	+192K New position	192K	$6.7M
Millennium Management LLC Hedge fund	+110K New position	110K	$4.3M
Bluecrest Capital Management Ltd Hedge fund	+50K New position	50K	$1.9M
Moore Capital Management, LP Hedge fund	+50K New position	50K	$1.9M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
No institution cut its holding.

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
None of the active managers on our list.

New positions

largest by value

Institution	Shares	Value June 30, 2026
TOMS Capital Investment Management LPHedge fund	3.1M	$121M
FMR LLCActive manager	1.8M	$69.2M
Citadel Advisors LLCHedge fund	1.3M	$51.3M
D. E. Shaw & Co., Inc.Hedge fund	1.3M	$48.5M
UBS Group AG	860K	$33.4M
Awm Investment Company, Inc.	814K	$31.6M
Capricorn Fund Managers Ltd	750K	$29.1M
Hiddenite Capital Partners LP	750K	$29.1M
Wellington Management Group LLPActive manager	619K	$24M
Yorkville Advisors Global, LP	582K	$22.6M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
No institution sold its whole holding.

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 78
Ten largest holders: 73.9%
Index fund managers: 4.7%
Active managers and hedge funds: 55.1%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	New	Net change in shares	Net %
Active managers and hedge funds	16	16	+8.8M	—
Index fund managers	6	6	+762K	—
Other institutions	55	55	+6.4M	—

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Boost Run.

Only managers that filed a holdings report for both quarters are compared (77 here). 1 other holder is left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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