GAITHERSBURG, MD
ALTIMMUNE, INC.ALT— Latest position per institution from SEC 13F filings
15
Institutional holders
138.98M
Total shares held
447.22M
Estimated value
6.95M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
20.39M
Value
61.97M
Filed
Jun 30, 2026
DEEP TRACK CAPITAL, LP
CIK 1856083
Shares
19.25M
Value
58.52M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
12.10M
Value
36.78M
Filed
Jun 30, 2026
TCG CROSSOVER MANAGEMENT, LLC
CIK 1839948
Shares
10M
Value
30.40M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
9.49M
Value
34.26M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
8.18M
Value
24.86M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
7.33M
Value
22.28M
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
6.84M
Value
20.80M
Filed
Jun 30, 2026
VIKING GLOBAL INVESTORS LP
CIK 1103804
Shares
6.70M
Value
20.37M
Filed
Jun 30, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
6.50M
Value
19.76M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
5.32M
Value
35.39M
Filed
Jun 30, 2024
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
5.01M
Value
15.24M
Filed
Jun 30, 2026
WOODLINE PARTNERS LP
CIK 1784547
Shares
3.40M
Value
10.34M
Filed
Jun 30, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
3.31M
Value
10.06M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
2.86M
Value
8.68M
Filed
Jun 30, 2026
TRAILS EDGE CAPITAL PARTNERS, LP
CIK 2077247
Shares
2.66M
Value
8.09M
Filed
Jun 30, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
2.64M
Value
8.15M
Filed
Mar 31, 2026
NUVEEN, LLC
CIK 1871926
Shares
2.41M
Value
7.31M
Filed
Jun 30, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
2.38M
Value
7.24M
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
2.21M
Value
6.73M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 20.39M | 61.97M | Jun 30, 2026 |
| 2 | DEEP TRACK CAPITAL, LP | 1856083 | 19.25M | 58.52M | Jun 30, 2026 |
| 3 | STATE STREET CORP | 93751 | 12.10M | 36.78M | Jun 30, 2026 |
| 4 | TCG CROSSOVER MANAGEMENT, LLC | 1839948 | 10M | 30.40M | Jun 30, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 9.49M | 34.26M | Dec 31, 2025 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 8.18M | 24.86M | Jun 30, 2026 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 7.33M | 22.28M | Jun 30, 2026 |
| 8 | MARSHALL WACE, LLP | 1318757 | 6.84M | 20.80M | Jun 30, 2026 |
| 9 | VIKING GLOBAL INVESTORS LP | 1103804 | 6.70M | 20.37M | Jun 30, 2026 |
| 10 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 6.50M | 19.76M | Jun 30, 2026 |
| 11 | BLACKROCK FINANCE, INC. | 1364742 | 5.32M | 35.39M | Jun 30, 2024 |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 5.01M | 15.24M | Jun 30, 2026 |
| 13 | WOODLINE PARTNERS LP | 1784547 | 3.40M | 10.34M | Jun 30, 2026 |
| 14 | MILLENNIUM MANAGEMENT LLC | 1273087 | 3.31M | 10.06M | Jun 30, 2026 |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 2.86M | 8.68M | Jun 30, 2026 |
| 16 | TRAILS EDGE CAPITAL PARTNERS, LP | 2077247 | 2.66M | 8.09M | Jun 30, 2026 |
| 17 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 2.64M | 8.15M | Mar 31, 2026 |
| 18 | NUVEEN, LLC | 1871926 | 2.41M | 7.31M | Jun 30, 2026 |
| 19 | TWO SIGMA INVESTMENTS, LP | 1179392 | 2.38M | 7.24M | Jun 30, 2026 |
| 20 | GOLDMAN SACHS GROUP INC | 886982 | 2.21M | 6.73M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.