NEW YORK, NY
SYNDAX PHARMACEUTICALS INCSNDX— Latest position per institution from SEC 13F filings
15
Institutional holders
106.62M
Total shares held
1.66B
Estimated value
5.33M
Avg. position size
OCTAGON CAPITAL ADVISORS LP
CIK 1839435
Shares
27.33M
Value
48.10M
Filed
Mar 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
9.02M
Value
197.18M
Filed
Jun 30, 2026
KYNAM CAPITAL MANAGEMENT, LP
CIK 1907884
Shares
8.05M
Value
175.99M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
7.91M
Value
162.33M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
6.23M
Value
130.90M
Filed
Dec 31, 2025
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
5.86M
Value
128.13M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
5.66M
Value
123.69M
Filed
Jun 30, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
4.05M
Value
88.43M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
3.93M
Value
85.86M
Filed
Jun 30, 2026
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 1009258
Shares
3.78M
Value
82.63M
Filed
Jun 30, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 1165408
Shares
3.31M
Value
50.95M
Filed
Sep 30, 2025
EVERSEPT PARTNERS, LP
CIK 1697013
Shares
2.80M
Value
61.17M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.58M
Value
56.50M
Filed
Jun 30, 2026
HOOD RIVER CAPITAL MANAGEMENT LLC
CIK 1578177
Shares
2.56M
Value
56.06M
Filed
Jun 30, 2026
KINGDON CAPITAL MANAGEMENT, L.L.C.
CIK 1000097
Shares
2.50M
Value
54.65M
Filed
Jun 30, 2026
PARADIGM BIOCAPITAL ADVISORS LP
CIK 1855655
Shares
2.39M
Value
34.70M
Filed
Sep 30, 2023
FRANKLIN RESOURCES INC
CIK 38777
Shares
2.29M
Value
49.98M
Filed
Jun 30, 2026
AVORO CAPITAL ADVISORS LLC
CIK 1633313
Shares
2.27M
Value
30.08M
Filed
Dec 31, 2024
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
2.05M
Value
44.90M
Filed
Jun 30, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
2.04M
Value
93.48K
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | OCTAGON CAPITAL ADVISORS LP | 1839435 | 27.33M | 48.10M | Mar 31, 2025 |
| 2 | BLACKROCK, INC. | 2012383 | 9.02M | 197.18M | Jun 30, 2026 |
| 3 | KYNAM CAPITAL MANAGEMENT, LP | 1907884 | 8.05M | 175.99M | Jun 30, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 7.91M | 162.33M | Jun 30, 2024 |
| 5 | VANGUARD GROUP INC | 102909 | 6.23M | 130.90M | Dec 31, 2025 |
| 6 | GOLDMAN SACHS GROUP INC | 886982 | 5.86M | 128.13M | Jun 30, 2026 |
| 7 | STATE STREET CORP | 93751 | 5.66M | 123.69M | Jun 30, 2026 |
| 8 | BANK OF AMERICA CORP /DE/ | 70858 | 4.05M | 88.43M | Jun 30, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 3.93M | 85.86M | Jun 30, 2026 |
| 10 | DEERFIELD MANAGEMENT COMPANY, L.P. | 1009258 | 3.78M | 82.63M | Jun 30, 2026 |
| 11 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1165408 | 3.31M | 50.95M | Sep 30, 2025 |
| 12 | EVERSEPT PARTNERS, LP | 1697013 | 2.80M | 61.17M | Jun 30, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.58M | 56.50M | Jun 30, 2026 |
| 14 | HOOD RIVER CAPITAL MANAGEMENT LLC | 1578177 | 2.56M | 56.06M | Jun 30, 2026 |
| 15 | KINGDON CAPITAL MANAGEMENT, L.L.C. | 1000097 | 2.50M | 54.65M | Jun 30, 2026 |
| 16 | PARADIGM BIOCAPITAL ADVISORS LP | 1855655 | 2.39M | 34.70M | Sep 30, 2023 |
| 17 | FRANKLIN RESOURCES INC | 38777 | 2.29M | 49.98M | Jun 30, 2026 |
| 18 | AVORO CAPITAL ADVISORS LLC | 1633313 | 2.27M | 30.08M | Dec 31, 2024 |
| 19 | MILLENNIUM MANAGEMENT LLC | 1273087 | 2.05M | 44.90M | Jun 30, 2026 |
| 20 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 2.04M | 93.48K | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.