Boundless Bio, Inc. - BOLD

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
FMR LLC History Reduced 2,684,022 3,220 0.0% 0.0% 1 -414,049 -13.36% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Added to 1,353,904 1,624 0.0% 0.0% 2 +477,492 54.48% Q4 2025 Feb 17, 2026
Stonepine Capital Management, LLC History Added to 710,071 852 0.62% 0.41% 3 +296,618 71.74% Q4 2025 Feb 13, 2026
SECTORAL ASSET MANAGEMENT INC History No change 678,574 814 0.65% 0.51% 4 0 0.0% Q4 2025 Feb 09, 2026
VANGUARD GROUP INC History Added to 662,757 795 0.0% 0.0% 5 +93,100 16.34% Q4 2025 Jan 29, 2026
WELLINGTON MANAGEMENT GROUP LLP History No change 556,233 667 0.0% 0.0% 6 0 0.0% Q4 2025 Feb 17, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 341,400 409 0.0% 0.0% 7 +117,838 52.71% Q4 2025 Feb 12, 2026
Alyeska Investment Group, L.P. History No change 300,000 360 0.0% 0.0% 8 0 0.0% Q4 2025 Feb 13, 2026
RBF Capital, LLC History No change 200,000 240 0.01% 0.01% 9 0 0.0% Q4 2025 Feb 17, 2026
NORTHERN TRUST CORP History Reduced 189,475 227 0.0% 0.0% 10 -1,326 -0.69% Q4 2025 Feb 17, 2026
Ensign Peak Advisors, Inc History No change 187,500 225 0.0% 0.0% 11 0 0.0% Q4 2025 Feb 12, 2026
Sio Capital Management, LLC History No change 163,679 196 0.03% 0.05% 12 0 0.0% Q4 2025 Feb 17, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 135,410 162 0.0% 0.0% 13 -28,681 -17.48% Q4 2025 Feb 17, 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. History New 127,626 153 0.01% 14 +127,626 New Q4 2025 Feb 13, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 94,098 112 0.0% 0.0% 15 -8,170 -7.99% Q4 2025 Feb 09, 2026
BlackRock, Inc. History Added to 67,048 80 0.0% 0.0% 16 +1,674 2.56% Q4 2025 Feb 12, 2026
GSA CAPITAL PARTNERS LLP History New 62,476 75 0.01% 17 +62,476 New Q4 2025 Feb 06, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History No change 50,500 60 0.0% 0.0% 18 0 0.0% Q4 2025 Feb 17, 2026
XTX Topco Ltd History Added to 39,577 47 0.0% 0.0% 20 +10,496 36.09% Q4 2025 Feb 17, 2026
Walleye Capital LLC History No change 39,624 47 0.0% 0.0% 19 0 0.0% Q4 2025 Feb 13, 2026
CITIGROUP INC History New 25,073 30 0.0% 21 +25,073 New Q4 2025 Feb 13, 2026
Qube Research & Technologies Ltd History Added to 18,707 22 0.0% 0.0% 22 +660 3.66% Q4 2025 Feb 17, 2026
STATE STREET CORP History No change 15,962 19 0.0% 0.0% 23 0 0.0% Q4 2025 Feb 13, 2026
JANE STREET GROUP, LLC History New 13,323 15 0.0% 25 +13,323 New Q4 2025 Feb 12, 2026
MORGAN STANLEY History Reduced 13,000 15 0.0% 0.0% 24 -2,501 -16.13% Q4 2025 Feb 13, 2026
Abel Hall, LLC History Reduced 12,865 15 0.0% 0.01% 26 -60 -0.46% Q4 2025 Feb 17, 2026
ACADIAN ASSET MANAGEMENT LLC History Reduced 12,610 14 0.0% 0.0% 27 -1,143 -8.31% Q4 2025 Feb 10, 2026
Nolet Wealth Management, LLC History New 11,323 13 0.01% 28 +11,323 New Q4 2025 Feb 27, 2026
BANK OF AMERICA CORP /DE/ History Added to 7,758 9 0.0% 0.0% 29 +19 0.25% Q4 2025 Feb 17, 2026
Tower Research Capital LLC (TRC) History Added to 5,803 6 0.0% 0.0% 30 +3,210 123.79% Q4 2025 Feb 17, 2026
Nextech Invest, Ltd. History Closed out 0 0 0.23% -1,228,069 -100.0% Q3 2025 Nov 14, 2025
Redmile Group, LLC History Closed out 0 0 0.03% -245,458 -100.0% Q3 2025 Nov 14, 2025
Almitas Capital LLC History Closed out 0 0 0.02% -86,808 -100.0% Q3 2025 Nov 17, 2025
Squarepoint Ops LLC History Closed out 0 0 0.0% -50,771 -100.0% Q3 2025 Nov 14, 2025
GOLDMAN SACHS GROUP INC History Closed out 0 0 0.0% -14,299 -100.0% Q3 2025 Nov 14, 2025
BNP PARIBAS FINANCIAL MARKETS History Reduced 176 0 -173 -49.57% Q4 2025 Feb 10, 2026
JPMORGAN CHASE & CO History New 169 0 +169 New Q4 2025 Feb 11, 2026
UBS Group AG History Added to 23 0 +22 2200.0% Q4 2025 Jan 29, 2026
CWM, LLC History Reduced 9 0 -6 -40.0% Q4 2025 Jan 26, 2026
BARCLAYS PLC History No change 2 0 0 0.0% Q4 2025 Feb 13, 2026
Optiver Holding B.V. History No change 168 0 0 0.0% Q4 2025 Feb 17, 2026