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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 2024

Institutional positions in Altimmune, Inc. as of Jun 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
173
+5 vs. Q1 2024
Shares held
42.4M
−1.81M (−4.1%) vs. Q1 2024
Total value
$282.1M
−$168.1M (−37.3%) vs. Q1 2024
New holders
45
53 more added
Sold out
40
47 more reduced

3 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2024: 173 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 2024: $282.1M
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 2024

Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q1 2024.

Institutions holding ALT in Q2 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Vivaldi Capital Management, LLC20,000$133.0K0.04%+20,000New
Arizona State Retirement System19,847$132.0K0.00%+5,081+34.4%Added
Janney Montgomery Scott LLC19,480$130.0K0.00%+19,480New
Connor, Clark & Lunn Investment Management Ltd.18,517$123.1K0.00%+18,517New
PEAK6 Investments LLC18,400$122.4K0.01%+18,400New
ExodusPoint Capital Management, LP17,510$116.0K0.00%−63,403−78.4%Reduced
Miracle Mile Advisors, LLC17,000$113.0K0.00%00.0%Unchanged
DRW Securities, LLC16,771$111.5K0.01%+16,771New
Teacher Retirement System of Texas15,512$103.0K0.00%+3,550+29.7%Added
Zurcher Kantonalbank (Zurich Cantonalbank)14,688$97.7K0.00%+9,635+190.7%Added
XTX Topco Ltd14,378$95.6K0.01%+14,378New
State Board of Administration of Florida Retirement System13,724$91.3K0.00%+13,724New
E Fund Management Co., Ltd.13,458$89.5K0.00%−28,251−67.7%Reduced
Steward Partners Investment Advisory, LLC13,450$89.4K0.00%+6,300+88.1%Added
Millennium Management LLC13,355$88.8K0.00%−1,576,795−99.2%Reduced
American Century Companies Inc13,193$87.7K0.00%−65,461−83.2%Reduced
North Star Investment Management Corp.13,100$87.1K0.01%+10,100+336.7%Added
Atria Investments LLC13,060$86.8K0.00%+13,060New
Cetera Investment Advisers13,032$86.7K0.00%−52,304−80.1%Reduced
Teza Capital Management LLC12,370$82.3K0.01%+44+0.4%Added
Creative Planning12,279$81.7K0.00%+500+4.2%Added
Kestra Advisory Services, LLC11,979$79.7K0.00%+11,979New
Private Portfolio Partners LLC11,600$77.1K0.06%+11,600New
Principal Financial Group Inc10,590$70.4K0.00%+10,590New
WealthPLAN Partners, LLC10,204$67.9K0.01%00.0%Unchanged
Sequoia Financial Advisors, LLC10,155$67.5K0.00%00.0%Unchanged
PFG Investments, LLC10,100$67.2K0.00%+10,100New
BNP Paribas Arbitrage, SA10,068$67.0K0.00%−22,357−68.9%Reduced
Stifel Financial Corp10,006$66.5K0.00%+10,006New
Brave Asset Management Inc10,000$66.5K0.02%00.0%Unchanged
Horizon Wealth Management, LLC10,000$66.5K0.02%+10,000New
Wealth Enhancement Advisory Services, LLC9,640$64.1K0.00%+9,640New
Russell Investments Group, Ltd.8,484$56.4K0.00%+4,107+93.8%Added
FMR LLC7,894$52.5K0.00%−3,218−29.0%Reduced
Catalyst Funds Management Pty Ltd6,500$43.2K0.01%−7,300−52.9%Reduced
HighTower Advisors, LLC5,864$39.0K0.00%+5,864New
Ameritas Investment Partners, Inc.5,470$36.4K0.00%00.0%Unchanged
Great West Life Assurance Co4,354$29.0K0.00%00.0%Unchanged
STRS Ohio4,300$28.6K0.00%00.0%Unchanged
Advisor Group Holdings, Inc.3,270$21.7K0.00%−63,965−95.1%Reduced
GAMMA Investing LLC3,219$21.4K0.00%+3,153+4,777.3%Added
Global Retirement Partners, LLC2,100$14.0K0.00%+2,000+2,000.0%Added
Activest Wealth Management2,001$13.3K0.00%+2,001New
The PNC Financial Services Group, Inc.1,993$13.3K0.00%−216−9.8%Reduced
Amalgamated Bank1,667$11.0K0.00%00.0%Unchanged
Pacer Advisors, Inc.1,260$8.38K0.00%−2,899−69.7%Reduced
Sunbelt Securities, Inc.1,140$7.58K0.00%+1,140New
Citadel Advisors LLC1,021$6.79K0.00%−75,046−98.7%Reduced
Penserra Capital Management LLC882$6.00K0.00%+882New
Optiver Holding B.V.890$5.92K0.00%+890New
Hollencrest Capital Management770$5.12K0.00%+770New
Banque Cantonale Vaudoise800$5.00K0.00%00.0%Unchanged
US Bancorp750$4.99K0.00%−19,067−96.2%Reduced
Stone House Investment Management, LLC500$3.33K0.00%00.0%Unchanged
Main Street Group, LTD277$1.99K0.00%−170−38.0%Reduced
Fifth Third Bancorp250$1.66K0.00%00.0%Unchanged
First Command Advisory Services, Inc.250$1.66K0.00%+250New
IFP Advisors, Inc200$1.33K0.00%+200New
Nisa Investment Advisors, LLC177$1.18K0.00%+35+24.6%Added
CWM, LLC224$1.00K0.00%+220+5,500.0%Added
SRS Capital Advisors, Inc.133$8850.00%+133New
Innealta Capital, LLC110$7320.00%+110New
Planning Capital Management Corp110$7320.00%+110New
Proequities, Inc.100$6650.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co100$6650.00%00.0%Unchanged
AdvisorNet Financial, Inc100$6650.00%00.0%Unchanged
CoreCap Advisors, LLC71$4720.00%+71New
Parallel Advisors, LLC40$2660.00%00.0%Unchanged
Farther Finance Advisors, LLC19$1370.00%−77−80.2%Reduced
Rothschild Investment LLC20$1330.00%+20New
First Horizon Advisors, Inc.3$200.00%00.0%Unchanged
Huntington National Bank2$130.00%00.0%Unchanged
Cornerstone Planning Group LLC1$60.00%00.0%Unchanged
Fred Alger Management, LLC0$00.00%−993,516−100.0%Sold out
Moody Aldrich Partners LLC0$00.00%−307,318−100.0%Sold out
Timelo Investment Management Inc.0$00.00%−294,095−100.0%Sold out
Ghost Tree Capital, LLC0$00.00%−250,000−100.0%Sold out
Woodline Partners LP0$00.00%−214,245−100.0%Sold out
Omers Administration Corp0$00.00%−104,600−100.0%Sold out
Sectoral Asset Management Inc0$00.00%−92,240−100.0%Sold out
Lighthouse Investment Partners, LLC0$00.00%−70,923−100.0%Sold out
SEI Investments Co0$00.00%−47,079−100.0%Sold out
Danske Bank A/S0$00.00%−36,370−100.0%Sold out
Glenmede Trust Co NA0$00.00%−34,905−100.0%Sold out
Bridgeway Capital Management, LLC0$00.00%−34,100−100.0%Sold out
Mirae Asset Global Investments Co., Ltd.0$00.00%−26,666−100.0%Sold out
Advisory Services Network, LLC0$00.00%−26,652−100.0%Sold out
American International Group, Inc.0$00.00%−26,560−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−22,830−100.0%Sold out
Bank of Montreal0$00.00%−20,965−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−16,105−100.0%Sold out
Walleye Trading LLC0$00.00%−15,579−100.0%Sold out
Brinker Capital Investments, LLC0$00.00%−14,943−100.0%Sold out
Orion Portfolio Solutions, LLC0$00.00%−14,943−100.0%Sold out
Toroso Investments, LLC0$00.00%−13,827−100.0%Sold out
Squarepoint Ops LLC0$00.00%−13,178−100.0%Sold out
Bernardo Wealth Planning LLC0$00.00%−11,913−100.0%Sold out
Eagle Ridge Investment Management0$00.00%−10,373−100.0%Sold out
EWG Elevate Inc.0$00.00%−10,000−100.0%Sold out
Point72 Asset Management, L.P.0$00.00%−7,600−100.0%Sold out