Security key
02155H200
Altimmune, Inc. - Common stock, par value $0.0001 per share (ALT)
CUSIP: 02155H200
Q3 2025 13F Holders as of 30 Sep 2025
- Type / Class
- Equity / Common stock, par value $0.0001 per share
- Shares outstanding
- 129,919,091
- Total 13F shares
- 41,476,255
- Share change
- +3,833,788
- Total reported value
- $156,373,200
- Put/Call ratio
- 73%
- Price per share
- $3.77
- Number of holders
- 157
- Value change
- +$14,303,174
- Number of buys
- 77
- Number of sells
- 90
Report period
Q3 2025
Institutions
157
Top holders
10
ALT full security history
Newer quarter: Q4 2025
Previous quarter: Q2 2025
Altimmune, Inc. SEC filings
Altimmune, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 02155H200
Recent filing periods:
Top shareholders of ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
7.6%
from 13D/G
|
6,372,560
|
$24,661,807 | — | 30 Jun 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
4%
|
5,167,124
|
$19,996,771 | — | 30 Jun 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.1%
|
2,753,638
|
$10,656,579 | — | 30 Jun 2025 | |
| TANG CAPITAL MANAGEMENT LLC |
13F
|
Company |
2.1%
|
2,750,000
|
$10,642,500 | — | 30 Jun 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.5%
|
1,934,880
|
$7,489,412 | — | 30 Jun 2025 | |
| AMERIPRISE FINANCIAL INC |
13D/G
13F
|
Company |
1.9%
|
1,443,932
|
$7,306,296 | -$19,283,488 | 31 Mar 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
1.2%
|
1,619,747
|
$6,268,421 | — | 30 Jun 2025 | |
| Knoll Capital Management, LLC |
13F
|
Company |
0.86%
|
1,121,524
|
$4,340,297 | — | 30 Jun 2025 | |
| Caption Management, LLC |
13F
|
Company |
0.75%
|
980,781
|
$3,795,622 | — | 30 Jun 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.7%
|
915,458
|
$3,542,823 | — | 30 Jun 2025 | |
| UBS Group AG |
13F
|
Company |
0.68%
|
886,918
|
$3,432,373 | — | 30 Jun 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.64%
|
835,407
|
$3,233,025 | — | 30 Jun 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.55%
|
716,019
|
$2,770,994 | — | 30 Jun 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.49%
|
640,346
|
$2,478,139 | — | 30 Jun 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.4%
|
523,461
|
$2,025,794 | — | 30 Jun 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.38%
|
499,238
|
$1,932,052 | — | 30 Jun 2025 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0.36%
|
469,389
|
$1,816,535 | — | 30 Jun 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.34%
|
447,470
|
$1,730,422 | — | 30 Jun 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.34%
|
437,286
|
$1,692,297 | — | 30 Jun 2025 | |
| FMR LLC |
13F
|
Company |
0.31%
|
401,843
|
$1,555,133 | — | 30 Jun 2025 | |
| Beirne Wealth Consulting Services, LLC |
13F
|
Company |
0.26%
|
342,458
|
$1,325,313 | — | 30 Jun 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.26%
|
332,016
|
$1,284,900 | — | 30 Jun 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.22%
|
292,095
|
$1,130,407 | — | 30 Jun 2025 | |
| Virtu Financial LLC |
13F
|
Company |
0.21%
|
267,778
|
$1,036,000 | — | 30 Jun 2025 | |
| Scientech Research LLC |
13F
|
Company |
0.2%
|
254,312
|
$984,187 | — | 30 Jun 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.19%
|
251,866
|
$974,722 | — | 30 Jun 2025 | |
| Caitong International Asset Management Co., Ltd |
13F
|
Company |
0.18%
|
239,630
|
$927,368 | — | 30 Jun 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.18%
|
233,506
|
$903,668 | — | 30 Jun 2025 | |
| BROWN WEALTH MANAGEMENT, LLC |
13F
|
Company |
0.18%
|
231,083
|
$894,291 | — | 30 Jun 2025 | |
| Steward Partners Investment Advisory, LLC |
13F
|
Company |
0.16%
|
213,384
|
$825,797 | — | 30 Jun 2025 | |
| GERBER, LLC |
13F
|
Company |
0.16%
|
206,778
|
$800,231 | — | 30 Jun 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.16%
|
202,355
|
$783,114 | — | 30 Jun 2025 | |
| Hennion & Walsh Asset Management, Inc. |
13F
|
Company |
0.15%
|
188,955
|
$731,256 | — | 30 Jun 2025 | |
| IMC-Chicago, LLC |
13F
|
Company |
0.14%
|
186,818
|
$722,986 | — | 30 Jun 2025 | |
| EXCHANGE TRADED CONCEPTS, LLC |
13F
|
Company |
0.14%
|
175,707
|
$679,986 | — | 30 Jun 2025 | |
| MOODY ALDRICH PARTNERS LLC |
13F
|
Company |
0.12%
|
157,614
|
$609,966 | — | 30 Jun 2025 | |
| Sculptor Capital LP |
13F
|
Company |
0.12%
|
151,000
|
$584,370 | — | 30 Jun 2025 | |
| INTECH INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.11%
|
144,890
|
$560,724 | — | 30 Jun 2025 | |
| Woodline Partners LP |
13F
|
Company |
0.11%
|
142,863
|
$552,880 | — | 30 Jun 2025 | |
| Brevan Howard Capital Management LP |
13F
|
Company |
0.1%
|
133,209
|
$515,519 | — | 30 Jun 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.1%
|
129,200
|
$500,004 | — | 30 Jun 2025 | |
| Summit Financial Wealth Advisors, LLC |
13F
|
Company |
0.09%
|
122,988
|
$475,964 | — | 30 Jun 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.09%
|
121,364
|
$470,000 | — | 30 Jun 2025 | |
| Richard I. Eisenstadt |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
236,037
mixed-class rows
|
$441,118 | — | 30 Jan 2024 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.09%
|
113,981
|
$441,097 | — | 30 Jun 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.08%
|
106,863
|
$413,560 | — | 30 Jun 2025 | |
| Avidity Partners Management LP |
13F
|
Company |
0.08%
|
105,000
|
$406,350 | — | 30 Jun 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.08%
|
104,697
|
$405,178 | — | 30 Jun 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
0.08%
|
103,500
|
$400,545 | — | 30 Jun 2025 | |
| Rafferty Asset Management, LLC |
13F
|
Company |
0.08%
|
102,011
|
$394,783 | — | 30 Jun 2025 |
Institutional Holders of Altimmune, Inc. - Common stock, par value $0.0001 per share (ALT) as of Q3 2025
As of 30 Sep 2025,
Altimmune, Inc. - Common stock, par value $0.0001 per share (ALT) was held by
157 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
41,476,255 shares.
The largest 10 holders included
VANGUARD GROUP INC, BlackRock, Inc., STATE STREET CORP, TANG CAPITAL MANAGEMENT LLC, GEODE CAPITAL MANAGEMENT, LLC, TWO SIGMA INVESTMENTS, LP, MORGAN STANLEY, TWO SIGMA ADVISERS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, and CITADEL ADVISORS LLC.
This page lists
157
institutional shareholders reporting positions in this security
for the Q3 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
179
Q3 2025 holders
157
Holder diff
-22
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 Value $ | Q3 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.