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Livermore
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Altimmune, Inc.

ALT
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001326190

In the last 90 days, Altimmune, Inc. insiders filed 1 open-market purchase and 0 sales; 210 institutions reported holding it in 13F filings for Q2 2026, worth $456.1M in total; Viking Global Investors is the only superinvestor holding it.

Q1 2025 vs. Q4 2024

How the institutions holding Altimmune, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025All holders in Q4 2024

13F holders of ALT: Q4 2024 compared with Q1 2025
MeasureQ4 2024Of which not filed for Q1 2025Q1 2025Change
Holders1833177−3
Shares40.5M231.4K38.2M−2.13M (−5.3%)
Value$292.3M$1.67M$191.2M−$99.4M (−34.2%)

3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (26)

Institutions that held Altimmune, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to ALT in Q1 2025
InstitutionSharesValue% of portfolio
RFG Advisory, LLC324,397$1.62M0.04%
Nuveen, LLC263,898$1.30M0.00%
Federated Hermes, Inc.187,727$938.6K0.00%
Sculptor Capital LP88,000$440.0K0.01%
HSBC Holdings PLC72,258$348.6K0.00%
ExodusPoint Capital Management, LP40,927$205.0K0.00%
Caption Management, LLC38,864$194.3K0.01%
Horizon Wealth Management, LLC25,000$125.0K0.02%
Envestnet Asset Management Inc22,237$111.2K0.00%
Concurrent Investment Advisors, LLC21,693$108.5K0.00%
Quest Partners LLC19,820$99.1K0.01%
Virtus Investment Advisers, Inc.19,116$95.6K0.03%
CIBC World Markets Corp15,760$78.8K0.00%
PVG Asset Management Corp14,025$70.1K0.31%
Atria Investments LLC12,285$61.4K0.00%
Mercer Global Advisors Inc10,747$53.7K0.00%
Headland Capital, LLC10,097$50.5K0.02%
Geneos Wealth Management Inc.10,000$50.0K0.00%
Magnus Financial Group LLC10,000$50.0K0.00%
Jones Financial Companies LLLP5,633$30.0K0.00%
Advisory Services Network, LLC4,587$22.9K0.00%
Versant Capital Management, Inc1,193$5.96K0.00%
Stone House Investment Management, LLC500$2.50K0.00%
Aventura Private Wealth, LLC200$1.00K0.00%
Signaturefd, LLC137$6850.00%
Stephens Consulting, LLC65$3250.00%

Sold out (29)

Institutions that held Altimmune, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of ALT in Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Citadel Advisors LLC675,044$4.87M
Ensign Peak Advisors, Inc454,981$3.28M
Colony Group, LLC122,539$883.5K
Virtu Financial LLC86,831$626.0K
Skandinaviska Enskilda Banken AB (publ)62,002$453.9K
PEAK6 LLC61,948$446.6K
Los Angeles Capital Management LLC31,197$224.9K
UBS Oconnor LLC26,899$193.9K
Farringdon Capital, Ltd.25,295$182.4K
Walleye Capital LLC22,224$160.2K
Integrated Wealth Concepts LLC19,019$137.1K
Walleye Trading LLC18,975$136.8K
Centiva Capital, LP17,180$123.9K
Wolverine Trading, LLC15,543$113.8K
Kestra Advisory Services, LLC15,682$113.1K
Bayesian Capital Management, LP14,700$106.0K
Freestone Grove Partners LP14,418$104.0K
Engineers Gate Manager LP14,414$103.9K
Headlands Technologies LLC14,054$101.3K
AQR Capital Management LLC12,577$90.7K
Axq Capital, LP12,388$89.3K
WealthPLAN Partners, LLC10,204$73.6K
Virtus ETF Advisers LLC8,277$59.7K
R Squared Ltd2,930$21.1K
Venturi Wealth Management, LLC1,700$12.3K
Pacific Capital Wealth Advisors, Inc1,388$10.0K
Proequities, Inc.100$694
Quantbot Technologies LP60$433
EverSource Wealth Advisors, LLC12$87

Not filed for Q1 2025 yet (3)

Institutions that held Altimmune, Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALT in Q4 2024 that haven't filed for Q1 2025
InstitutionShares, Q4 2024Value, Q4 2024
Nuveen Asset Management, LLC216,926$1.56M
Private Portfolio Partners LLC14,500$104.5K
Global Retirement Partners, LLC4$29