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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, Q2 2022

Institutional positions in Altimmune, Inc. as of Jun 30, 2022. 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
111
+9 vs. Q1 2022
Shares held
39.9M
+6.26M (+18.6%) vs. Q1 2022
Total value
$466.9M
+$259.6M (+125.2%) vs. Q1 2022
New holders
39
27 more added
Sold out
30
31 more reduced

1 institution that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2022: 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 holdersQ2 2022: 111 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 heldQ2 2022: $466.9M
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, Q2 2022

Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q1 2022.

Institutions holding ALT in Q2 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Tang Capital Management LLC3,600,450$42.1M6.39%+1,026,706+39.9%Added
Nuveen Asset Management, LLC3,064,280$35.9M0.01%−180,924−5.6%Reduced
Cormorant Asset Management, LP3,000,000$35.1M2.72%+3,000,000New
Avidity Partners Management LP2,981,000$34.9M0.80%+116,000+4.0%Added
Baker Bros. Advisors LP2,075,403$24.3M0.14%+1,003,365+93.6%Added
Vanguard Group Inc1,725,546$20.2M0.00%−91,369−5.0%Reduced
Sphera Funds Management Ltd.1,392,884$16.3M3.09%+85,931+6.6%Added
Morgan Stanley1,374,024$16.1M0.00%−33,915−2.4%Reduced
Ardsley Advisory Partners LP1,339,000$15.7M3.88%−14,000−1.0%Reduced
Citadel Advisors LLC1,147,858$13.4M0.02%+23,451+2.1%Added
Barclays PLC1,065,547$12.5M0.01%−89,734−7.8%Reduced
BlackRock Inc.962,184$11.3M0.00%−1,974,140−67.2%Reduced
Driehaus Capital Management LLC940,061$11.0M0.18%+940,061New
Ikarian Capital, LLC897,359$10.5M4.35%+897,359New
Citigroup Inc889,470$10.4M0.01%+99,343+12.6%Added
Millennium Management LLC824,648$9.65M0.01%+127,488+18.3%Added
Two Sigma Advisers, LP766,600$8.97M0.03%+75,800+11.0%Added
Laurion Capital Management LP763,970$8.94M0.37%+763,970New
Renaissance Technologies LLC665,400$7.79M0.01%+276,700+71.2%Added
Two Sigma Investments, LP615,618$7.20M0.02%+11,198+1.9%Added
Point72 Asset Management, L.P.609,100$7.13M0.03%+609,100New
Tri Locum Partners LP574,646$6.72M2.77%+574,646New
Parkman Healthcare Partners LLC559,755$6.55M2.41%+250,169+80.8%Added
Woodline Partners LP550,685$6.44M0.11%−295,933−35.0%Reduced
Goldman Sachs Group Inc504,756$5.91M0.00%−224,113−30.7%Reduced
Atika Capital Management LLC411,039$4.81M0.63%+411,039New
Geode Capital Management, LLC379,831$4.44M0.00%−261,990−40.8%Reduced
VR Adviser, LLC369,306$4.32M0.85%−390,413−51.4%Reduced
Alliancebernstein L.P.350,526$4.10M0.00%−144,535−29.2%Reduced
DCF Advisers, LLC335,180$3.92M2.63%+19,180+6.1%Added
ExodusPoint Capital Management, LP305,879$3.58M0.05%+279,528+1,060.8%Added
Beirne Wealth Consulting Services, LLC284,647$3.33M2.18%+100,807+54.8%Added
Marshall Wace, LLP270,330$3.16M0.01%+270,330New
Ergoteles LLC214,700$2.51M0.08%+214,700New
Balyasny Asset Management LLC206,469$2.42M0.01%+206,469New
EAM Investors, LLC194,271$2.27M0.55%+194,271New
Norges Bank189,600$2.22M0.00%00.0%Unchanged
Group One Trading, L.P.189,074$2.21M0.06%+139,668+282.7%Added
Timelo Investment Management Inc.187,529$2.19M2.00%+187,529New
Schonfeld Strategic Advisors LLC179,000$2.09M0.02%+162,500+984.8%Added
D. E. Shaw & Co., Inc.169,683$1.99M0.00%−798,053−82.5%Reduced
JPMorgan Chase & Co160,573$1.88M0.00%−147,016−47.8%Reduced
Sectoral Asset Management Inc150,000$1.75M0.35%+150,000New
State Street Corp135,546$1.59M0.00%−555,595−80.4%Reduced
Walleye Capital LLC134,993$1.58M0.05%−76,760−36.2%Reduced
Knoll Capital Management, LLC132,978$1.56M0.89%00.0%Unchanged
Boothbay Fund Management, LLC128,283$1.50M0.05%+128,283New
EAM Global Investors LLC125,995$1.47M0.36%+125,995New
Simplex Trading, LLC125,262$1.47M0.05%+125,262New
Dimensional Fund Advisors LP123,364$1.44M0.00%+50,662+69.7%Added
Gsa Capital Partners LLP112,917$1.32M0.20%+83,434+283.0%Added
Jennison Associates LLC109,464$1.28M0.00%+109,464New
Northern Trust Corp101,789$1.19M0.00%−258,338−71.7%Reduced
Cubist Systematic Strategies, LLC99,365$1.16M0.01%+9,880+11.0%Added
Altium Capital Management LP98,659$1.15M0.49%−223,341−69.4%Reduced
Atom Investors LP79,946$935.0K0.41%+69,837+690.8%Added
Ci Investments Inc.68,400$800.0K0.00%+68,400New
Bank of America Corp64,973$760.0K0.00%+42,135+184.5%Added
Silvercrest Asset Management Group LLC62,500$731.0K0.01%00.0%Unchanged
Platinum Investment Management Ltd56,863$665.0K0.03%+56,863New
PDT Partners, LLC56,266$658.0K0.06%−68,111−54.8%Reduced
Chartwell Investment Partners, LLC53,294$624.0K0.03%+53,294New
Prescott General Partners LLC50,000$585.0K0.04%+50,000New
Bank of New York Mellon Corp49,045$574.0K0.00%−148,202−75.1%Reduced
ClariVest Asset Management LLC44,600$522.0K0.02%+44,600New
Jane Street Group, LLC44,214$517.0K0.00%−2,520−5.4%Reduced
Walleye Trading LLC35,939$420.0K0.01%+35,939New
Price T Rowe Associates Inc35,600$417.0K0.00%−3,453−8.8%Reduced
Squarepoint Ops LLC28,133$329.0K0.00%−66,494−70.3%Reduced
Apollon Wealth Management, LLC26,483$310.0K0.03%00.0%Unchanged
Alps Advisors Inc25,637$300.0K0.00%−15,199−37.2%Reduced
Wolverine Trading, LLC24,142$284.0K0.01%+24,142New
MML Investors Services, LLC20,000$234.0K0.00%00.0%Unchanged
Delphia (USA) Inc.19,543$229.0K0.16%+19,543New
Caption Management, LLC18,807$220.0K0.02%+18,807New
Corton Capital Inc.17,875$209.0K0.20%+17,875New
Charles Schwab Investment Management Inc17,274$203.0K0.00%−86,948−83.4%Reduced
Cetera Advisors LLC17,100$200.0K0.00%−1,400−7.6%Reduced
LMR Partners LLP14,139$165.0K0.00%+14,139New
ETF Managers Group, LLC13,655$161.0K0.00%+1,601+13.3%Added
SG Americas Securities, LLC13,487$158.0K0.00%+13,487New
Telemetry Investments, L.L.C.13,000$152.0K0.23%+13,000New
Eagle Ridge Investment Management10,373$121.0K0.01%+10,373New
King Wealth10,000$117.0K0.03%+10,000New
Royal Bank of Canada8,293$97.0K0.00%+5,699+219.7%Added
Advisor Group Holdings, Inc.8,232$96.0K0.00%+8,226+137,100.0%Added
Wells Fargo & Company6,560$76.0K0.00%−5,262−44.5%Reduced
Tower Research Capital LLC (TRC)6,038$71.0K0.00%−11,787−66.1%Reduced
AdvisorNet Financial, Inc6,089$71.0K0.01%00.0%Unchanged
Emfo, LLC–$44.0K0.04%–New
FNY Investment Advisers, LLC2,730$31.0K0.02%+2,730New
US Bancorp1,984$23.0K0.00%+891+81.5%Added
Banque Cantonale Vaudoise1,500$18.0K0.00%00.0%Unchanged
BNP Paribas Arbitrage, SA1,145$13.4K0.00%−7,691−87.0%Reduced
FMR LLC793$9.00K0.00%+285+56.1%Added
Godsey & Gibb Associates611$7.00K0.00%+611New
UBS Group AG508$6.00K0.00%−1,500−74.7%Reduced
Parallel Advisors, LLC440$5.00K0.00%+386+714.8%Added
The PNC Financial Services Group, Inc.372$4.00K0.00%00.0%Unchanged
New York State Common Retirement Fund282$3.00K0.00%−21,349−98.7%Reduced