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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.

13F holders, Q3 2024

Institutional positions in Altimmune, Inc. as of Sep 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
169
−3 vs. Q2 2024
Shares held
39.5M
+2.45M (+6.6%) vs. Q2 2024
Total value
$243.0M
−$3.73M (−1.5%) vs. Q2 2024
New holders
22
59 more added
Sold out
25
46 more reduced

1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ALT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2024: 169 institutions
Q1 2021: 98 institutionsQ2 2021: 109 institutionsQ3 2021: 119 institutionsQ4 2021: 102 institutionsQ1 2022: 103 institutionsQ2 2022: 111 institutionsQ3 2022: 122 institutionsQ4 2022: 128 institutionsQ1 2023: 133 institutionsQ2 2023: 120 institutionsQ3 2023: 113 institutionsQ4 2023: 143 institutionsQ1 2024: 171 institutionsQ2 2024: 173 institutionsQ3 2024: 169 institutionsQ4 2024: 183 institutionsQ1 2025: 177 institutionsQ2 2025: 180 institutionsQ3 2025: 159 institutionsQ4 2025: 183 institutionsQ1 2026: 173 institutionsQ2 2026: 210 institutions
Value heldQ3 2024: $243.0M
Q1 2021: $336.5MQ2 2021: $269.2MQ3 2021: $375.3MQ4 2021: $295.8MQ1 2022: $207.4MQ2 2022: $466.9MQ3 2022: $588.1MQ4 2022: $769.9MQ1 2023: $205.4MQ2 2023: $124.5MQ3 2023: $79.2MQ4 2023: $377.1MQ1 2024: $452.2MQ2 2024: $282.1MQ3 2024: $243.0MQ4 2024: $292.3MQ1 2025: $191.2MQ2 2025: $145.5MQ3 2025: $156.4MQ4 2025: $198.8MQ1 2026: $213.5MQ2 2026: $456.1M
Institutions holding ALT and their total value by quarter
QuarterHoldersValue
Q2 2026210$456.1M
Q1 2026173$213.5M
Q4 2025183$198.8M
Q3 2025159$156.4M
Q2 2025180$145.5M
Q1 2025177$191.2M
Q4 2024183$292.3M
Q3 2024169$243.0M
Q2 2024173$282.1M
Q1 2024171$452.2M
Q4 2023143$377.1M
Q3 2023113$79.2M
Q2 2023120$124.5M
Q1 2023133$205.4M
Q4 2022128$769.9M
Q3 2022122$588.1M
Q2 2022111$466.9M
Q1 2022103$207.4M
Q4 2021102$295.8M
Q3 2021119$375.3M
Q2 2021109$269.2M
Q1 202198$336.5M

Institutions, Q3 2024

Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q2 2024.

Institutions holding ALT in Q3 2024
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock, Inc.5,466,094$33.6M0.00%+5,466,094New
Vanguard Group Inc4,983,858$30.6M0.00%+77,244+1.6%Added
Ameriprise Financial Inc3,876,044$23.8M0.01%+652,047+20.2%Added
State Street Corp3,413,827$21.0M0.00%−495,459−12.7%Reduced
Tang Capital Management LLC2,750,000$16.9M1.21%00.0%Unchanged
Geode Capital Management, LLC1,668,004$10.2M0.00%+74,194+4.7%Added
Morgan Stanley1,295,585$7.95M0.00%+4,565+0.4%Added
Knoll Capital Management, LLC1,121,524$6.89M3.33%00.0%Unchanged
Goldman Sachs Group Inc932,825$5.73M0.00%−77,324−7.7%Reduced
Susquehanna International Group, LLP926,962$5.69M0.01%−1,283,439−58.1%Reduced
Bellevue Group AG863,660$5.30M0.09%+263,660+43.9%Added
D. E. Shaw & Co., Inc.758,004$4.65M0.01%−4,358−0.6%Reduced
Capital Fund Management S.A.726,829$4.46M0.05%−159,448−18.0%Reduced
Dimensional Fund Advisors LP646,377$3.97M0.00%+76,203+13.4%Added
Northern Trust Corp629,998$3.87M0.00%+102,701+19.5%Added
Schroder Investment Management Group473,865$3.07M0.00%00.0%Unchanged
Two Sigma Investments, LP454,302$2.79M0.01%−122,264−21.2%Reduced
Citadel Advisors LLC427,587$2.63M0.00%+426,566+41,779.2%Added
Jane Street Group, LLC382,663$2.35M0.00%+246,412+180.9%Added
Gsa Capital Partners LLP339,595$2.08M0.16%−148,530−30.4%Reduced
IMC-Chicago, LLC334,630$2.05M0.06%+51,338+18.1%Added
Ensign Peak Advisors, Inc326,777$2.01M0.00%00.0%Unchanged
Beirne Wealth Consulting Services, LLC302,800$1.86M0.65%+25,000+9.0%Added
UBS Group AG282,455$1.73M0.00%+122,854+77.0%Added
Gerber, LLC281,778$1.73M1.27%00.0%Unchanged
Nuveen Asset Management, LLC234,430$1.44M0.00%−430,628−64.8%Reduced
Exchange Traded Concepts, LLC216,761$1.33M0.03%+92,498+74.4%Added
Charles Schwab Investment Management Inc211,626$1.30M0.00%+4,772+2.3%Added
Susquehanna Portfolio Strategies, LLC207,197$1.27M0.09%00.0%Unchanged
Wellington Management Group LLP197,232$1.21M0.00%+42,553+27.5%Added
Bank of New York Mellon Corp188,615$1.16M0.00%−55,193−22.6%Reduced
Balyasny Asset Management LLC179,940$1.10M0.00%+179,940New
Hennion & Walsh Asset Management, Inc.174,108$1.07M0.05%+44,832+34.7%Added
Rafferty Asset Management, LLC155,786$956.5K0.00%−65,805−29.7%Reduced
Barclays PLC155,741$956.3K0.00%+75,064+93.0%Added
Bank of America Corp149,507$918.0K0.00%−129,831−46.5%Reduced
Swiss National Bank139,500$856.5K0.00%00.0%Unchanged
Simplex Trading, LLC133,165$817.0K0.03%−32,924−19.8%Reduced
Wells Fargo & Company127,329$781.8K0.00%+42,567+50.2%Added
Group One Trading, L.P.122,798$754.0K0.03%−153,205−55.5%Reduced
Virtu Financial LLC109,759$674.0K0.04%+109,759New
Rhumbline Advisers109,219$670.6K0.00%+1,773+1.7%Added
Millennium Management LLC104,153$639.5K0.00%+90,798+679.9%Added
Silvercrest Asset Management Group LLC103,500$635.5K0.00%00.0%Unchanged
JPMorgan Chase & Co100,912$619.6K0.00%−191,848−65.5%Reduced
Macquarie Group Ltd100,000$614.0K0.00%00.0%Unchanged
Commonwealth Equity Services, LLC89,120$547.0K0.00%+2,010+2.3%Added
Two Sigma Advisers, LP88,400$542.8K0.00%+19,000+27.4%Added
UBS Asset Management Americas Inc79,266$486.7K0.00%−25,916−24.6%Reduced
State of Wisconsin Investment Board73,186$449.4K0.00%+3,794+5.5%Added
Alliancebernstein L.P.71,760$440.6K0.00%−23,770−24.9%Reduced
Legal & General Group Plc68,602$421.5K0.00%+6,424+10.3%Added
California State Teachers Retirement System66,964$411.2K0.00%−2,445−3.5%Reduced
Los Angeles Capital Management LLC66,537$408.5K0.00%−37,067−35.8%Reduced
Skandinaviska Enskilda Banken AB (publ)62,002$381.3K0.00%00.0%Unchanged
Squarepoint Ops LLC61,688$378.8K0.00%+61,688New
Portolan Capital Management, LLC60,976$374.4K0.03%−579,266−90.5%Reduced
Deutsche Bank AG55,792$342.6K0.00%+15,357+38.0%Added
Alps Advisors Inc54,993$337.7K0.00%−311−0.6%Reduced
Citigroup Inc51,815$318.1K0.00%+15,430+42.4%Added
FMR LLC51,060$313.5K0.00%+43,166+546.8%Added
LPL Financial LLC50,480$309.9K0.00%−1,182−2.3%Reduced
Brown Wealth Management, LLC50,248$308.5K0.11%+248+0.5%Added
Marex Group plc50,000$307.0K0.01%−2,000−3.8%Reduced
Summit Financial Wealth Advisors, LLC45,918$281.9K0.05%+18,113+65.1%Added
ExodusPoint Capital Management, LP45,769$281.0K0.00%+28,259+161.4%Added
Mirae Asset Global ETFs Holdings Ltd.45,120$279.1K0.00%+9,118+25.3%Added
BNP Paribas Arbitrage, SA42,140$258.7K0.00%+32,072+318.6%Added
MetLife Investment Management41,577$255.3K0.00%00.0%Unchanged
Connor, Clark & Lunn Investment Management Ltd.40,705$249.9K0.00%+22,188+119.8%Added
Corebridge Financial, Inc.37,977$233.2K0.00%−234−0.6%Reduced
DCF Advisers, LLC37,868$232.5K0.12%−5,000−11.7%Reduced
Campbell & CO Investment Adviser LLC37,426$229.8K0.02%−12,068−24.4%Reduced
Royal Bank of Canada37,119$228.0K0.00%+6,107+19.7%Added
Wealth Effects LLC35,050$215.2K0.08%−2,500−6.7%Reduced
MML Investors Services, LLC34,450$212.0K0.00%−13,259−27.8%Reduced
SG Americas Securities, LLC34,436$211.0K0.00%−220,135−86.5%Reduced
Intech Investment Management LLC33,738$207.2K0.00%+33,738New
American Century Companies Inc32,954$202.3K0.00%+19,761+149.8%Added
Janus Henderson Group PLC32,000$196.6K0.00%00.0%Unchanged
Invesco Ltd.31,711$194.7K0.00%+968+3.1%Added
Profund Advisors LLC30,954$190.1K0.01%−9,807−24.1%Reduced
Wolverine Trading, LLC28,271$182.9K0.00%+837+3.1%Added
Farallon Capital Management, L.L.C.27,600$169.5K0.00%00.0%Unchanged
Tower Research Capital LLC (TRC)26,960$165.5K0.00%+6,369+30.9%Added
Manufacturers Life Insurance Company, The26,328$161.7K0.00%−645−2.4%Reduced
GWM Advisors LLC24,546$150.7K0.00%+1,614+7.0%Added
Price T Rowe Associates Inc23,988$148.0K0.00%+1,320+5.8%Added
AQR Capital Management LLC23,885$146.7K0.00%−17,494−42.3%Reduced
PVG Asset Management Corp23,668$145.3K0.58%+547+2.4%Added
Axq Capital, LP23,495$144.3K0.04%+23,495New
National Asset Management, Inc.23,454$144.1K0.00%+2,687+12.9%Added
Voya Investment Management LLC23,350$143.4K0.00%−100,789−81.2%Reduced
Janney Montgomery Scott LLC22,934$141.0K0.00%+3,454+17.7%Added
UBS Oconnor LLC22,048$135.4K0.00%−17,952−44.9%Reduced
New York State Common Retirement Fund21,447$131.7K0.00%00.0%Unchanged
Arizona State Retirement System20,417$125.4K0.00%+570+2.9%Added
Steward Partners Investment Advisory, LLC20,200$124.0K0.00%+6,750+50.2%Added
Jefferies Financial Group Inc.20,000$122.8K0.00%00.0%Unchanged
Vivaldi Capital Management, LLC20,000$122.8K0.04%00.0%Unchanged