SAN DIEGO, CA
BOUNDLESS BIO, INC.BOLD— Latest position per institution from SEC 13F filings
15
Institutional holders
19.08M
Total shares held
431.68M
Estimated value
953.80K
Avg. position size
NUVEEN, LLC
CIK 1871926
Shares
3.96M
Value
399.32M
Filed
Mar 31, 2025
FMR LLC
CIK 315066
Shares
2.70M
Value
2.96M
Filed
Mar 31, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
2.18M
Value
3.29M
Filed
Mar 31, 2025
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.34M
Value
1.48M
Filed
Mar 31, 2026
NEXTECH INVEST, LTD.
CIK 1595430
Shares
1.23M
Value
1.51M
Filed
Sep 30, 2025
NEXTECH INVEST LTD.
CIK 1911010
Shares
1.23M
Value
3.56M
Filed
Dec 31, 2024
BOXER CAPITAL, LLC
CIK 1465837
Shares
711.33K
Value
2.47M
Filed
Sep 30, 2024
SECTORAL ASSET MANAGEMENT INC
CIK 1274413
Shares
678.57K
Value
746.43K
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
662.76K
Value
795.31K
Filed
Dec 31, 2025
STONEPINE CAPITAL MANAGEMENT, LLC
CIK 1440771
Shares
597.68K
Value
657.45K
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
597.19K
Value
656.91K
Filed
Mar 31, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
556.23K
Value
611.86K
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
517.09K
Value
2M
Filed
Jun 30, 2024
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
399K
Value
438.90K
Filed
Mar 31, 2026
FEDERATED HERMES, INC.
CIK 1056288
Shares
375K
Value
5.34M
Filed
Mar 31, 2024
SILVERARC CAPITAL MANAGEMENT, LLC
CIK 1816307
Shares
312.50K
Value
4.45M
Filed
Mar 31, 2024
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
300K
Value
330K
Filed
Mar 31, 2026
BOXER CAPITAL MANAGEMENT, LLC
CIK 2018299
Shares
250K
Value
377.50K
Filed
Mar 31, 2025
REDMILE GROUP, LLC
CIK 1425738
Shares
245.46K
Value
301.91K
Filed
Sep 30, 2025
PFM HEALTH SCIENCES, LP
CIK 1442756
Shares
240.51K
Value
363.18K
Filed
Mar 31, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | NUVEEN, LLC | 1871926 | 3.96M | 399.32M | Mar 31, 2025 |
| 2 | FMR LLC | 315066 | 2.70M | 2.96M | Mar 31, 2026 |
| 3 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 2.18M | 3.29M | Mar 31, 2025 |
| 4 | CITADEL ADVISORS LLC | 1423053 | 1.34M | 1.48M | Mar 31, 2026 |
| 5 | NEXTECH INVEST, LTD. | 1595430 | 1.23M | 1.51M | Sep 30, 2025 |
| 6 | NEXTECH INVEST LTD. | 1911010 | 1.23M | 3.56M | Dec 31, 2024 |
| 7 | BOXER CAPITAL, LLC | 1465837 | 711.33K | 2.47M | Sep 30, 2024 |
| 8 | SECTORAL ASSET MANAGEMENT INC | 1274413 | 678.57K | 746.43K | Mar 31, 2026 |
| 9 | VANGUARD GROUP INC | 102909 | 662.76K | 795.31K | Dec 31, 2025 |
| 10 | STONEPINE CAPITAL MANAGEMENT, LLC | 1440771 | 597.68K | 657.45K | Mar 31, 2026 |
| 11 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 597.19K | 656.91K | Mar 31, 2026 |
| 12 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 556.23K | 611.86K | Mar 31, 2026 |
| 13 | BLACKROCK FINANCE, INC. | 1364742 | 517.09K | 2M | Jun 30, 2024 |
| 14 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 399K | 438.90K | Mar 31, 2026 |
| 15 | FEDERATED HERMES, INC. | 1056288 | 375K | 5.34M | Mar 31, 2024 |
| 16 | SILVERARC CAPITAL MANAGEMENT, LLC | 1816307 | 312.50K | 4.45M | Mar 31, 2024 |
| 17 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 300K | 330K | Mar 31, 2026 |
| 18 | BOXER CAPITAL MANAGEMENT, LLC | 2018299 | 250K | 377.50K | Mar 31, 2025 |
| 19 | REDMILE GROUP, LLC | 1425738 | 245.46K | 301.91K | Sep 30, 2025 |
| 20 | PFM HEALTH SCIENCES, LP | 1442756 | 240.51K | 363.18K | Mar 31, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.