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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 2021

Institutional positions in Altimmune, Inc. as of Sep 30, 2021. 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
119
+11 vs. Q2 2021
Shares held
32.9M
+5.63M (+20.7%) vs. Q2 2021
Total value
$375.3M
+$106.2M (+39.5%) vs. Q2 2021
New holders
26
48 more added
Sold out
15
30 more reduced

1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 2021: 119 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 2021: $375.3M
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 2021

Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q2 2021.

Institutions holding ALT in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
The PNC Financial Services Group, Inc.932$10.0K0.00%+65+7.5%Added
Penserra Capital Management LLC910$10.0K0.00%+35+4.0%Added
Parallel Advisors, LLC734$8.00K0.00%00.0%Unchanged
Godsey & Gibb Associates611$7.00K0.00%00.0%Unchanged
Patriot Financial Group Insurance Agency, LLC500$6.00K0.00%−2,850−85.1%Reduced
Huntington National Bank506$6.00K0.00%+172+51.5%Added
Toth Financial Advisory Corp300$3.00K0.00%00.0%Unchanged
Atlas Private Wealth Advisors300$3.00K0.00%00.0%Unchanged
Fifth Third Bancorp250$3.00K0.00%00.0%Unchanged
Farmers & Merchants Investments Inc227$3.00K0.00%+90+65.7%Added
American Portfolios Advisors250$2.83K0.00%−500−66.7%Reduced
Proequities, Inc.200$2.00K0.00%00.0%Unchanged
Daiwa Securities Group Inc.136$2.00K0.00%+74+119.4%Added
State of Wyoming61$1.00K0.00%−171−73.7%Reduced
Northwestern Mutual Wealth Management Co100$1.00K0.00%00.0%Unchanged
Providence Capital Advisors, LLC125$1.00K0.00%00.0%Unchanged
First Horizon Advisors, Inc.153$1.00K0.00%+111+264.3%Added
Harbour Investments, Inc.3$00.00%+1+50.0%Added
Ellevest, Inc.5$00.00%+5New
Point72 Asset Management, L.P.0$00.00%−1,564,654−100.0%Sold out
Capital World Investors0$00.00%−692,604−100.0%Sold out
Integral Health Asset Management, LLC0$00.00%−160,000−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−69,300−100.0%Sold out
MYDA Advisors LLC0$00.00%−60,000−100.0%Sold out
CSS LLC0$00.00%−35,073−100.0%Sold out
AXA S.A.0$00.00%−32,600−100.0%Sold out
Engineers Gate Manager LP0$00.00%−13,929−100.0%Sold out
Raymond James & Associates0$00.00%−11,786−100.0%Sold out
Simplex Trading, LLC0$00.00%−6,985−100.0%Sold out
Global Retirement Partners, LLC0$00.00%−4,362−100.0%Sold out
SG3 Management, LLC0$00.00%−3,000−100.0%Sold out
IFP Advisors, Inc0$00.00%−2,227−100.0%Sold out
Panagora Asset Management Inc0$00.00%−122−100.0%Sold out
FMR LLC0$00.00%−1−100.0%Sold out
CWM, LLC––––Not filed