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BRUN

Boost Run Inc
BRUN

69 hedge funds and large institutions have $397M invested in Boost Run Inc in 2026 Q2 according to their latest regulatory filings, with 69 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

32.16% more ownership

Funds ownership: 0% → 32.16% (+32%)

19% less call options, than puts

Call options by funds: $55.5M | Put options by funds: $68.9M

Holders
69
Holders Change
+69
Holders Change %
–
% of All Funds
0.85%
Holding in Top 10
4
Holding in Top 10 Change
+4
Holding in Top 10 Change %
% of All Funds
0.05%
New
69
Increased
–
Reduced
–
Closed
–
Calls
$55.5M
Puts
$68.9M
Net Calls
-$13.3M
Net Calls Change
-$13.3M

Top Buyers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
+$40.9M
2
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$38.8M
3
UBS Group
UBS Group
Switzerland
+$26.7M
4
AIC
AWM Investment Company
New York
+$25.2M
5
CFM
Capricorn Fund Managers
United Kingdom
+$23.3M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Citadel Advisors
1
Citadel Advisors
Florida
$51.3M +$40.9M +1,320,722 New
D.E. Shaw & Co
2
D.E. Shaw & Co
New York
$48.5M +$38.8M +1,250,546 New
UBS Group
3
UBS Group
Switzerland
$33.4M +$26.7M +860,043 New
AIC
4
AWM Investment Company
New York
$31.6M +$25.2M +813,739 New
CFM
5
Capricorn Fund Managers
United Kingdom
$29.1M +$23.3M +750,000 New
HCP
6
Hiddenite Capital Partners
New York
$29.1M +$23.3M +750,000 New
YAG
7
Yorkville Advisors Global
New Jersey
$22.6M +$18.1M +582,367 New
Morgan Stanley
8
Morgan Stanley
New York
$19M +$15.2M +490,680 New
HCI
9
Harraden Circle Investments
New York
$18.1M +$14.5M +466,375 New
SM
10
Scoggin Management
New York
$13.3M +$10.6M +342,500 New
MF
11
Magnetar Financial
Illinois
$11.3M +$9.05M +291,975 New
BlackRock
12
BlackRock
New York
$10.6M +$8.48M +273,575 New
LA
13
Linden Advisors
New York
$6.7M +$5.94M +191,707 New
Geode Capital Management
14
Geode Capital Management
Massachusetts
$6.1M +$4.87M +157,105 New
Vanguard Capital Management
15
Vanguard Capital Management
Pennsylvania
$5.83M +$4.66M +150,150 New
Susquehanna International Group
16
Susquehanna International Group
Pennsylvania
$4.4M +$3.51M +113,368 New
PC
17
Periscope Capital
Ontario, Canada
$4.25M +$3.97M +127,988 New
NCGI
18
Next Century Growth Investors
Minnesota
$4.09M +$3.27M +105,506 New
FCM
19
FirstWave Capital Management
Florida
$3.44M +$2.75M +88,631 New
Jane Street
20
Jane Street
New York
$3.24M +$2.59M +83,488 New
Barclays
21
Barclays
United Kingdom
$3.2M +$2.56M +82,512 New
Charles Schwab
22
Charles Schwab
California
$3.13M +$2.5M +80,539 New
Vanguard Fiduciary Trust
23
Vanguard Fiduciary Trust
Pennsylvania
$2.75M +$2.2M +70,912 New
Citigroup
24
Citigroup
New York
$2.43M +$1.94M +62,688 New
Nomura Holdings
25
Nomura Holdings
Japan
$2.36M +$1.89M +60,869 New
1
2 3

BRUN Hedge Fund Activity: Q2 2026 in Review

69 of the 8,153 institutional investors tracked by Wall St. Rank reported a position in Boost Run Inc (BRUN) for Q2 2026, worth a combined $397M.

Buyers outnumbered sellers: 69 funds opened new BRUN positions and 0 closed out — a net gain of 69 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Citadel Advisors, opening a new position worth an estimated $40.9M.

  • 69 institutional investors held Boost Run Inc (BRUN) as of Q2 2026, up from 0 in Q1 2026.
  • Funds reported $397M of Boost Run Inc stock for Q2 2026.
  • 69 funds opened new Boost Run Inc positions in Q2 2026 and 0 closed out, a net change of +69 holders.
  • The largest Boost Run Inc buyer in Q2 2026 was Citadel Advisors, an estimated $40.9M added.

Based on aggregated 13F filings for Q2 2026.