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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, Q4 2021

Institutional positions in Altimmune, Inc. as of Dec 31, 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
102
−16 vs. Q3 2021
Shares held
32.5M
+379.9K (+1.2%) vs. Q3 2021
Total value
$295.8M
−$70.6M (−19.3%) vs. Q3 2021
New holders
19
39 more added
Sold out
35
29 more reduced

1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2021: 102 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 heldQ4 2021: $295.8M
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, Q4 2021

Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q3 2021.

Institutions holding ALT in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Huntington National Bank2$00.00%−504−99.6%Reduced
Cornerstone Advisory, LLC32$00.00%+32New
BCR Wealth Strategies, LLC4$00.00%+4New
Daiwa Securities Group Inc.136$1.00K0.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co100$1.00K0.00%00.0%Unchanged
First Horizon Advisors, Inc.111$1.00K0.00%−42−27.5%Reduced
Providence Capital Advisors, LLC125$1.00K0.00%00.0%Unchanged
State of Wyoming58$1.00K0.00%−3−4.9%Reduced
Fifth Third Bancorp250$2.00K0.00%00.0%Unchanged
Carroll Investors, Inc272$2.00K0.00%+272New
American Portfolios Advisors250$2.29K0.00%00.0%Unchanged
The PNC Financial Services Group, Inc.372$3.00K0.00%−560−60.1%Reduced
Parallel Advisors, LLC425$4.00K0.00%−309−42.1%Reduced
Advisor Group Holdings, Inc.550$5.00K0.00%−1,660−75.1%Reduced
Godsey & Gibb Associates611$6.00K0.00%00.0%Unchanged
CWM, LLC775$7.00K0.00%+775New
Cutler Group LP900$8.00K0.00%−3,600−80.0%Reduced
Banque Cantonale Vaudoise1,500$14.0K0.00%00.0%Unchanged
Ameritas Investment Partners, Inc.3,098$28.0K0.00%00.0%Unchanged
Legal & General Group Plc3,166$29.0K0.00%00.0%Unchanged
Point72 Hong Kong Ltd5,396$49.0K0.00%+5,396New
Royal Bank of Canada8,612$78.0K0.00%+2,143+33.1%Added
Argent Trust Co10,000$92.0K0.01%00.0%Unchanged
State Board of Administration of Florida Retirement System10,752$98.0K0.00%−75,007−87.5%Reduced
Metropolitan Life Insurance Co11,051$101.2K0.00%+898+8.8%Added
ETF Managers Group, LLC12,067$108.0K0.00%−39,945−76.8%Reduced
Invesco Ltd.11,831$108.0K0.00%−1,109−8.6%Reduced
E Fund Management Co., Ltd.11,936$109.0K0.00%+11,936New
MetLife Investment Management12,799$117.2K0.00%00.0%Unchanged
SG Americas Securities, LLC13,565$124.0K0.00%−13,416−49.7%Reduced
Squarepoint Ops LLC14,381$132.0K0.00%−46,227−76.3%Reduced
Voya Investment Management LLC14,510$133.0K0.00%−66,843−82.2%Reduced
AdvisorNet Financial, Inc14,641$134.0K0.01%−89−0.6%Reduced
XTX Topco Ltd14,767$135.0K0.08%+14,767New
ProShare Advisors LLC15,277$139.0K0.00%+1,714+12.6%Added
Caption Management, LLC15,519$142.0K0.01%+519+3.5%Added
Schonfeld Strategic Advisors LLC17,900$164.0K0.00%−48,700−73.1%Reduced
LMR Partners LLP20,000$183.0K0.00%−20,249−50.3%Reduced
MML Investors Services, LLC20,000$183.0K0.00%−221−1.1%Reduced
American International Group, Inc.21,066$193.0K0.00%−629−2.9%Reduced
California State Teachers Retirement System21,418$196.0K0.00%00.0%Unchanged
New York State Common Retirement Fund21,625$198.0K0.00%−23−0.1%Reduced
Manufacturers Life Insurance Company, The21,612$198.0K0.00%+179+0.8%Added
Parametric Portfolio Associates LLC21,832$200.0K0.00%−4,913−18.4%Reduced
Deutsche Bank AG24,084$221.0K0.00%+1,282+5.6%Added
Tower Research Capital LLC (TRC)24,680$226.0K0.00%+19,544+380.5%Added
Russell Investments Group, Ltd.27,000$247.0K0.00%+27,000New
Wells Fargo & Company27,880$255.0K0.00%−11,072−28.4%Reduced
Wolverine Trading, LLC33,555$300.0K0.00%+16,825+100.6%Added
National Asset Management, Inc.34,000$312.0K0.01%−1,227−3.5%Reduced
NinePointTwo Capital37,168$340.0K0.11%+37,168New
Jane Street Group, LLC38,054$349.0K0.00%+16,337+75.2%Added
Price T Rowe Associates Inc38,219$350.0K0.00%+5,900+18.3%Added
Apollon Wealth Management, LLC40,583$372.0K0.03%−3,400−7.7%Reduced
Jump Financial, LLC45,400$416.0K0.03%+45,400New
Alps Advisors Inc45,984$421.0K0.00%−2,465−5.1%Reduced
Group One Trading, L.P.47,804$438.0K0.01%−21,801−31.3%Reduced
Rhumbline Advisers48,140$441.0K0.00%+1,958+4.2%Added
Gsa Capital Partners LLP48,997$449.0K0.06%+48,997New
Walleye Trading LLC49,083$450.0K0.01%+49,083New
BNP Paribas Arbitrage, SA59,587$545.8K0.00%+50,257+538.7%Added
Renaissance Technologies LLC66,800$612.0K0.00%+66,800New
Walleye Capital LLC72,304$662.0K0.02%+72,304New
Dimensional Fund Advisors LP78,470$719.0K0.00%+78,470New
Trexquant Investment LP84,135$771.0K0.05%+66,091+366.3%Added
Cubist Systematic Strategies, LLC91,391$837.0K0.01%+91,391New
Charles Schwab Investment Management Inc100,820$924.0K0.00%+2,565+2.6%Added
Millennium Management LLC108,858$997.0K0.00%−29,396−21.3%Reduced
PDT Partners, LLC118,876$1.09M0.08%+118,876New
Knoll Capital Management, LLC132,978$1.22M0.67%00.0%Unchanged
PointState Capital LP135,000$1.24M0.04%+75,000+125.0%Added
Susquehanna International Group, LLP136,651$1.25M0.00%+51,174+59.9%Added
Beirne Wealth Consulting Services, LLC136,840$1.25M0.69%+4,900+3.7%Added
UBS Group AG174,848$1.60M0.00%+73,106+71.9%Added
JPMorgan Chase & Co185,568$1.70M0.00%+130,971+239.9%Added
Norges Bank189,600$1.74M0.00%+122,000+180.5%Added
Bank of New York Mellon Corp200,196$1.83M0.00%+39,013+24.2%Added
Bank of America Corp225,570$2.07M0.00%+204,148+953.0%Added
Parkman Healthcare Partners LLC263,474$2.41M0.55%+88,474+50.6%Added
DCF Advisers, LLC280,700$2.57M1.29%+41,500+17.3%Added
Alliancebernstein L.P.354,397$3.25M0.00%+101,587+40.2%Added
Rafferty Asset Management, LLC362,943$3.33M0.02%+198,865+121.2%Added
Northern Trust Corp376,484$3.45M0.00%−10,806−2.8%Reduced
Goldman Sachs Group Inc485,419$4.45M0.00%+8,614+1.8%Added
Two Sigma Advisers, LP557,200$5.10M0.01%+557,200New
Two Sigma Investments, LP576,422$5.28M0.01%+576,422New
Woodline Partners LP620,678$5.68M0.08%+271,855+77.9%Added
Geode Capital Management, LLC633,044$5.80M0.00%−25,808−3.9%Reduced
Citadel Advisors LLC1,037,954$9.51M0.01%−51,898−4.8%Reduced
Ardsley Advisory Partners LP1,054,000$9.65M2.28%+26,500+2.6%Added
Citigroup Inc1,066,395$9.77M0.01%+957,330+877.8%Added
Baker Bros. Advisors LP1,072,038$9.82M0.05%00.0%Unchanged
Barclays PLC1,095,060$10.0M0.01%+812,041+286.9%Added
Morgan Stanley1,152,343$10.6M0.00%+430,539+59.6%Added
D. E. Shaw & Co., Inc.1,181,237$10.8M0.01%+225,799+23.6%Added
Sphera Funds Management Ltd.1,244,241$11.4M1.35%+155,387+14.3%Added
Tang Capital Management LLC1,600,000$14.7M2.95%00.0%Unchanged
Vanguard Group Inc1,733,755$15.9M0.00%+97,398+6.0%Added
Nuveen Asset Management, LLC2,295,832$19.4M0.01%+1,490,012+184.9%Added
Avidity Partners Management LP2,765,000$25.3M0.54%+597,100+27.5%Added