Skip to content
Disclosery

ALT ALTIMMUNE INC

Follow

COM NEW (common), issuer CIK 1326190

167 managers (173 13F filers) reported a position in ALT shares at 2026-03-31, 69,370,859 shares in all. 25 filers opened a position and 36 filers sold out during the quarter.

Managers
167
13F filers
173
New
25
Added
82
Reduced
34
Sold out
36
Shares held by filers
69,370,859

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.12,795,277$39.4M<0.01%+3,090,97913F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding11,962,322$36.8MnewTimeline
STATE STREET CORPin group STATE STREET CORP7,145,550$22M<0.01%+2,025,84713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP4,017,901$12.4M0.01%+3,095,12413F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC3,258,191$10M0.01%+3,050,80813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,107,096$9.57M<0.01%+814,68613F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.2,644,600$8.15M0.02%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP2,478,900$7.64M0.01%+1,213,21713F-HRTimelineGroup
Nuveen, LLCin group TIAA2,334,601$7.19M<0.01%+1,090,39013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,350,649$4.16M<0.01%+1,35613F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding1,325,956$4.08M-178,231Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,045,926$3.22M<0.01%+762,22313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP996,721$3.07M<0.01%+280,73013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding908,922$2.8M+266,202Timeline
MORGAN STANLEYin group MORGAN STANLEY775,258$2.39M<0.01%-584,62713F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.727,001$2.24M<0.01%-616,58213F-HRTimelineGroup
FMR LLCin group FMR LLC673,964$2.08M<0.01%+109,87113F-HRTimelineGroup
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC666,022$2.05M0.1%-1,465,28513F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.665,289$2.05M<0.01%new13F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP667,837$1.92M<0.01%+198,82413F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/570,203$1.76M<0.01%+186,42013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC448,873$1.38M<0.01%-889,05413F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS435,078$1.34M<0.01%+257,77313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp413,503$1.27M<0.01%+59,30213F-HRTimelineGroup
Beirne Wealth Consulting Services, LLC411,858$1.27M0.36%+35,40013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co351,681$1.08M<0.01%+68,01213F-HRTimelineGroup
Steward Partners Investment Advisory, L…251,781$775K<0.01%+6,38813F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…248,158$764K<0.01%-9,11313F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC239,280$737K0.06%new13F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.237,522$732K<0.01%+118,08213F-HRTimelineGroup
BROWN WEALTH MANAGEMENT, LLC236,136$727K0.19%-22,53713F-HRTimeline
Rafferty Asset Management, LLC231,271$712K<0.01%+35,50513F-HRTimeline
Invesco Ltd.in group Invesco Ltd.227,857$702K<0.01%+13,03313F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.201,989$622K0.02%-12,64313F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC192,871$594K<0.01%-207,72413F-HRTimelineGroup
Janney Montgomery Scott LLC172,610$532K<0.01%+70,00013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC160,374$494K<0.01%-21,10913F-HRTimeline
Knoll Capital Management, LLC160,000$493K0.27%-961,52413F-HRTimeline
RHUMBLINE ADVISERS155,671$479K<0.01%+34,15813F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC154,365$476K<0.01%+22,14413F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP134,616$415K<0.01%+11,20013F-HRTimelineGroup
WEALTH EFFECTS LLC131,950$406K0.14%+20,20013F-HRTimeline
Man Group plcin group Man Group plc129,846$400K<0.01%+110,91013F-HRTimelineGroup
Grantham, Mayo, Van Otterloo & Co. LLC126,389$389K<0.01%-46,17013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\124,516$384K<0.01%+44,57613F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO127,498$367K<0.01%+22,96613F-HR/ATimelineGroup
Engineers Gate Manager LP116,112$358K<0.01%+28,84813F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.110,000$339K<0.01%-47,80013F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC105,881$326K<0.01%+20,20413F-HRTimelineGroup
LPL Financial LLC103,756$320K<0.01%+55,13013F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC103,500$319K<0.01%013F-HRTimeline
Summit Financial Wealth Advisors, LLC103,288$318K0.05%013F-HRTimeline
PROFUND ADVISORS LLC103,141$318K0.01%+30,84313F-HRTimeline
NOMURA ASSET MANAGEMENT INTERNATIONAL I…in group NOMURA ASSET MANAGEMENT CO LTD100,000$308K<0.01%013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN95,907$295K<0.01%-45,37513F-HR/ATimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/92,512$285K<0.01%+42,63313F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC85,454$263K<0.01%+64,30713F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.71,760$259K<0.01%013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding83,824$255K+26,188Timeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…78,403$241K<0.01%-35,72513F-HRTimelineGroup
KINGSWOOD WEALTH ADVISORS, LLC76,500$236K0.01%+40,50013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC76,327$235K<0.01%+48,00313F-HRTimelineGroup
Caption Management, LLC74,438$229K0.01%013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…72,213$222K<0.01%+34,02013F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC71,968$222K<0.01%-1,87013F-HR/ATimelineGroup
Virtu Financial LLCin group Virtu Financial LLC70,540$217K0.01%+12,06313F-HRTimelineGroup
Leonteq Securities AG65,000$200K0.01%+64,00013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC62,909$194K<0.01%new13F-HRTimelineGroup
PVG ASSET MANAGEMENT CORP66,120$175K0.1%new13F-HRTimeline
SG Americas Securities, LLC55,625$171K<0.01%+45,05013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC53,796$166K<0.01%-2,06313F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD53,300$164K<0.01%+23,30013F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…51,743$159K0.04%+1,26113F-HRTimelineGroup
ExodusPoint Capital Management, LP48,619$150K<0.01%+36,69813F-HRTimeline
AXQ CAPITAL, LP47,752$147K0.02%+22,05113F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…46,370$143K<0.01%+3,20313F-HRTimelineGroup
Creative Planningin group Creative Planning39,229$121K<0.01%-7,65713F-HRTimelineGroup
Kovack Advisors, Inc.36,250$112K0.01%+1,03513F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…35,650$110K<0.01%+17,96713F-HR/ATimelineGroup
Cetera Investment Advisers35,453$109K<0.01%+5,76613F-HRTimeline
Police & Firemen's Retirement System of…35,433$109K<0.01%+11,86013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …34,763$107K<0.01%+7,16713F-HRTimelineGroup
MML INVESTORS SERVICES, LLC34,550$106K<0.01%013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC30,761$94.7K<0.01%-21,79613F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP30,553$94.1K<0.01%new13F-HRTimelineGroup
HUB Investment Partners, LLC30,218$93.1K<0.01%+16,00013F-HRTimeline
E Fund Management Co., Ltd.29,072$89.5K<0.01%13F-HRTimeline
BLAIR WILLIAM & CO/IL28,223$86.9K<0.01%-28,21113F-HRTimeline
FARALLON CAPITAL MANAGEMENT, L.L.C.27,600$85K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Voleon Capital Management LP27,142$83.6K<0.01%-19,91313F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…26,508$81.6K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP25,869$78.1K<0.01%+13,34313F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA25,317$78K<0.01%-2,09713F-HRTimelineGroup
ProShare Advisors LLC24,523$75.5K<0.01%+3,70713F-HRTimeline
Polymer Capital Management (US) LLC23,999$73.9K0.01%new13F-HRTimeline
SIMPLEX TRADING, LLC22,841$70.3K<0.01%new13F-HRTimeline
China Universal Asset Management Co., L…22,223$68.4K0.01%+5,22013F-HRTimeline
Scientech Research LLC21,840$67.3K0.06%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC21,790$67.1K<0.01%new13F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND21,447$66.1K<0.01%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC21,011$64.7K<0.01%+7,32113F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.20,678$63.7K<0.01%+1,73713F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.20,000$61.6K<0.01%+5,00013F-HRTimelineGroup
Vines Capital Management, LLC18,884$58.2K0.06%+1,00013F-HRTimeline
Keudell/Morrison Wealth Management18,500$57K0.01%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC18,126$55.8K<0.01%-16,82313F-HRTimelineGroup
Caitong International Asset Management …17,217$53K0.01%+15,29313F-HRTimeline
North Star Investment Management Corp.17,000$52.4K<0.01%+9,00013F-HRTimeline
Composition Wealth, LLC17,000$52.4K<0.01%-2013F-HRTimeline
CHOREO, LLC16,691$51.4K<0.01%new13F-HRTimeline
EFG International AGin group EFG International AG16,500$50.8K<0.01%013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…16,092$49.6K<0.01%+1,55513F-HRTimelineGroup
Advisory Services Network, LLC15,260$47K<0.01%+10013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC14,763$45.5K<0.01%+2,83313F-HRTimeline
DCF Advisers, LLC14,700$45.3K0.02%-4,00013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…14,488$44.6K<0.01%+6,29913F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P14,355$44.2K<0.01%013F-HRTimeline
Northeast Financial Group, Inc.in group Northeast Financial Group, In…13,641$42K0.01%+24813F-HRTimelineGroup
PFG Investments, LLC13,500$41.6K<0.01%new13F-HRTimeline
SMITH, MOORE & CO.13,205$40.7K<0.01%new13F-HRTimeline
NINE MASTS CAPITAL Ltd11,850$36.5K0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc11,496$35.4K<0.01%+2,13413F-HRTimelineGroup
Cambridge Investment Research Advisors,…11,206$35K<0.01%new13F-HRTimeline
Foundations Investment Advisors, LLC11,052$34K<0.01%new13F-HRTimeline
Sunbelt Securities, Inc.10,870$33.5K<0.01%+2613F-HRTimeline
XPONANCE LLC10,783$33.2K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…10,680$32.9K<0.01%+3,72513F-HRTimelineGroup
Quantinno Capital Management LP10,636$32.8K<0.01%new13F-HRTimeline
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC10,500$32.3K<0.01%013F-HRTimelineGroup
IMC-Chicago, LLC10,004$30.8K<0.01%-163,12613F-HRTimeline
Geneos Wealth Management Inc.10,000$30.8K<0.01%013F-HRTimeline
SBI Securities Co., Ltd.8,313$25.6K<0.01%-52413F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC7,311$22K<0.01%-28,42113F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…7,124$21.9K<0.01%+1,66313F-HRTimeline
GROUP ONE TRADING LLC6,695$20.6K<0.01%-24,67713F-HRTimeline
Activest Wealth Management5,001$15.4K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC4,519$13.9K<0.01%+1,43713F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.3,858$11.9K<0.01%new13F-HR/ATimelineGroup
BELLEVUE ASSET MANAGEMENT, LLC2,433$7.49K<0.01%new13F-HRTimeline
GF FUND MANAGEMENT CO. LTD.2,331$7.18K<0.01%+28213F-HRTimeline
HighMark Wealth Management LLC2,000$6.16K<0.01%013F-HRTimeline
NewEdge Advisors, LLC1,888$5.82K<0.01%013F-HR/ATimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,552$4.78K<0.01%-86013F-HRTimelineGroup
MassMutual Private Wealth & Trust, FSB1,000$3.08K<0.01%+8213F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\890$2.74K<0.01%+33113F-HRTimelineGroup
Sterling Capital Management LLC847$2.61K<0.01%+31713F-HRTimeline
Stone House Investment Management, LLC526$1.62K<0.01%+2613F-HRTimeline
Arax Advisory Partners339$1.04K<0.01%-7,82613F-HRTimeline
Bogart Wealth, LLC298$918<0.01%new13F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC286$881<0.01%013F-HRTimeline
Legacy Wealth Managment, LLC/IDin group Legacy Wealth Managment, LLC/…250$770<0.01%013F-HRTimelineGroup
MAI Capital Management150$462<0.01%013F-HRTimeline
Farther Finance Advisors, LLC141$440<0.01%+6813F-HRTimeline
HARBOUR INVESTMENTS, INC.100$308<0.01%new13F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…100$308<0.01%013F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC95$293<0.01%013F-HRTimeline
Allworth Financial LP70$216<0.01%-1913F-HRTimeline
Parallel Advisors, LLC40$123<0.01%013F-HR/ATimeline
Clearstead Advisors, LLC40$122<0.01%013F-HRTimeline
Essential Partners LLC27$83<0.01%new13F-HRTimeline
SJS Investment Consulting Inc.16$50<0.01%new13F-HRTimeline
Bernard Wealth Management Corp.15$47<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC13$40<0.01%+1213F-HRTimeline
Larson Financial Group LLC5$15<0.01%-5,30113F-HRTimeline
FIRST HORIZON CORP3$9<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2$6<0.01%013F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC2$6<0.01%-65,66313F-HR/ATimelineGroup