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BOLD

Boundless Bio
BOLD

44 hedge funds and large institutions have $9.88M invested in Boundless Bio in 2025 Q2 according to their latest regulatory filings, with 11 funds opening new positions, 7 increasing their positions, 19 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

19% less funds holding

Funds holding: 54 → 44 (-10)

32.38% less ownership

Funds ownership: 76.11% → 43.72% (-32%)

48% less first-time investments, than exits

New positions opened: 11 | Existing positions closed: 21

63% less repeat investments, than reductions

Existing positions increased: 7 | Existing positions reduced: 19

98% less capital invested

Capital invested by funds: $419M → $9.88M (-$409M)

Holders
44
Holders Change
-10
Holders Change %
-18.52%
% of All Funds
0.58%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
11
Increased
7
Reduced
19
Closed
21
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$284K
2
RC
RBF Capital
California
+$266K
3
Renaissance Technologies
Renaissance Technologies
New York
+$142K
4
SCM
Stonepine Capital Management
Oregon
+$141K
5
YIH
Y-Intercept (HK)
Hong Kong
+$73.4K

Top Sellers

Rank Fund Capital Flow
1
N
Nuveen
North Carolina
-$399M
2
RCM
RA Capital Management
Massachusetts
-$3.29M
3
BlackRock
BlackRock
New York
-$749K
4
BCM
Boxer Capital Management
California
-$378K
5
PHS
PFM Health Sciences
California
-$363K
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$3.16M -$43.4K -32,669 -1%
NI
2
Nextech Invest
Switzerland
$1.24M – – –
Citadel Advisors
3
Citadel Advisors
Florida
$839K – – –
SAM
4
Sectoral Asset Management
Quebec, Canada
$685K – – –
RG
5
Redmile Group
California
$595K -$181K -136,170 -19%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$562K – – –
Vanguard Group
7
Vanguard Group
Pennsylvania
$486K -$140K -105,173 -18%
Alyeska Investment Group
8
Alyeska Investment Group
Illinois
$303K – – –
AC
9
Almitas Capital
California
$238K +$1.5K +1,127 +0.5%
Millennium Management
10
Millennium Management
New York
$216K +$284K +213,561 New
Northern Trust
11
Northern Trust
Illinois
$210K -$143K -107,865 -34%
RC
12
RBF Capital
California
$202K +$266K +200,000 New
Ensign Peak Advisors
13
Ensign Peak Advisors
Utah
$189K – – –
SCM
14
Sio Capital Management
New York
$165K +$2.15K +1,621 +1%
Renaissance Technologies
15
Renaissance Technologies
New York
$122K +$142K +106,600 +740%
SCM
16
Stonepine Capital Management
Oregon
$107K +$141K +106,175 New
Goldman Sachs
17
Goldman Sachs
New York
$71K +$47.7K +35,877 +104%
BlackRock
18
BlackRock
New York
$64.9K -$749K -563,939 -90%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$59.5K -$250K -188,240 -76%
YIH
20
Y-Intercept (HK)
Hong Kong
$55.8K +$73.4K +55,242 New
BCM
21
Bridgeway Capital Management
Texas
$51K +$67.1K +50,500 New
XT
22
XTX Topco
Cayman Islands
$40.5K +$18.8K +14,147 +55%
Walleye Capital
23
Walleye Capital
New York
$40K – – –
Susquehanna International Group
24
Susquehanna International Group
Pennsylvania
$32.5K +$11.9K +8,968 +39%
HF
25
HRT Financial
New York
$27K +$36.5K +27,509 New
1
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BOLD Hedge Fund Activity: Q2 2025 in Review

44 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Boundless Bio (BOLD) for Q2 2025, worth a combined $9.88M — down 98% from $419M a quarter earlier.

Sellers outnumbered buyers: 21 funds closed out of BOLD and 11 opened new positions — a net loss of 10 holders — while 19 trimmed existing stakes and 7 added.

The largest buyer was Millennium Management, opening a new position worth an estimated $284K. The largest seller was Nuveen, exiting entirely with an estimated $399M sold.

  • 44 institutional investors held Boundless Bio (BOLD) as of Q2 2025, down from 54 in Q1 2025.
  • Funds reported $9.88M of Boundless Bio stock for Q2 2025, down 98% quarter-over-quarter.
  • 11 funds opened new Boundless Bio positions in Q2 2025 and 21 closed out, a net change of -10 holders.
  • The largest Boundless Bio buyer in Q2 2025 was Millennium Management, an estimated $284K added.
  • The largest Boundless Bio seller in Q2 2025 was Nuveen, an estimated $399M sold.

Based on aggregated 13F filings for Q2 2025.