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Disclosery

ALT ALTIMMUNE INC

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COM NEW (common), issuer CIK 1326190

153 managers (158 13F filers) reported a position in ALT shares at 2025-09-30, 41,478,819 shares in all. 22 filers opened a position and 42 filers sold out during the quarter.

Managers
153
13F filers
158
New
22
Added
57
Reduced
48
Sold out
42
Shares held by filers
41,478,819

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
VANGUARD GROUP INCin group VANGUARD GROUP INC6,373,638$24M<0.01%+1,206,51413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.6,373,259$24M<0.01%+69913F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP3,601,255$13.6M<0.01%+847,61713F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding3,425,248$12.9M+2,858,762Timeline
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC2,131,307$8.04M0.31%-618,69313F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,017,385$7.61M<0.01%+82,50513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding1,559,409$5.88M-144,667Timeline
MORGAN STANLEYin group MORGAN STANLEY1,491,049$5.62M<0.01%+655,64213F-HR/ATimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,282,014$4.83M<0.01%+758,55313F-HRTimelineGroup
Knoll Capital Management, LLC1,121,524$4.23M2.27%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP657,016$2.48M<0.01%+16,67013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding642,837$2.42M-248,296Timeline
Squarepoint Ops LLCin group Squarepoint Ops LLC584,696$2.2M<0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC562,257$2.12M<0.01%+63,01913F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.476,926$1.8M<0.01%new13F-HRTimelineGroup
FMR LLCin group FMR LLC445,137$1.68M<0.01%+43,29413F-HRTimelineGroup
Beirne Wealth Consulting Services, LLC410,458$1.55M0.37%+68,00013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC367,582$1.39M<0.01%+289,28813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.360,395$1.36M<0.01%+309,13713F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp341,985$1.29M<0.01%+9,96913F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC340,283$1.28M<0.01%+48,18813F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/320,440$1.21M<0.01%-395,57913F-HR/ATimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP297,789$1.12M<0.01%-149,68113F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC280,199$1.06M<0.01%new13F-HRTimelineGroup
Sculptor Capital LPin group Sculptor Capital LP276,700$1.04M0.01%+125,70013F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…264,802$998K<0.01%+12,93613F-HRTimelineGroup
BROWN WEALTH MANAGEMENT, LLC233,673$881K0.25%+2,59013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…222,942$840K0.01%+89,73313F-HRTimelineGroup
Steward Partners Investment Advisory, L…219,309$827K<0.01%+5,92513F-HRTimeline
SIMPLEX TRADING, LLC213,709$805K0.02%+113,74213F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co204,449$771K<0.01%-29,05713F-HRTimelineGroup
Nuveen, LLCin group TIAA202,355$763K<0.01%013F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.185,575$700K0.03%-3,38013F-HRTimeline
ExodusPoint Capital Management, LP178,177$672K0.01%+138,91813F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC174,097$656K<0.01%+75,17613F-HRTimeline
Invesco Ltd.in group Invesco Ltd.161,943$611K<0.01%+55,08013F-HRTimelineGroup
Rafferty Asset Management, LLC156,194$589K<0.01%+54,18313F-HRTimeline
GROUP ONE TRADING LLC140,255$529K0.02%-329,13413F-HRTimeline
RHUMBLINE ADVISERS130,743$493K<0.01%+16,76213F-HRTimeline
Caption Management, LLC130,000$490K0.03%-850,78113F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.119,440$450K<0.01%+60,00013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP116,770$440K0.04%-4,59413F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC115,800$437K0.01%new13F-HR/ATimelineGroup
IMC-Chicago, LLC115,360$435K0.01%-71,45813F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC103,500$390K<0.01%013F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD100,000$377K<0.01%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO99,191$374K<0.01%-5,50613F-HR/ATimelineGroup
Summit Financial Wealth Advisors, LLC96,288$373K0.06%-26,70013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN92,907$350K<0.01%-5,47113F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\76,893$290K<0.01%+6,12213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS74,533$281K<0.01%+64,43813F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC74,312$280K<0.01%-39,56313F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC73,126$272K<0.01%-12,34213F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.71,760$271K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA66,733$251K<0.01%+5,77013F-HRTimelineGroup
LPL Financial LLC61,524$232K<0.01%-13,96913F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP60,411$228K<0.01%+18,85113F-HRTimelineGroup
WEALTH EFFECTS LLC59,850$226K0.07%+28,10013F-HRTimeline
Janney Montgomery Scott LLC58,560$221K<0.01%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC50,600$191K<0.01%new13F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.50,000$188K<0.01%+15,00013F-HRTimelineGroup
DLD Asset Management, LP50,000$188K0.02%+27,40013F-HR/ATimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding49,317$186K-1,164Timeline
Virtu Financial LLCin group Virtu Financial LLC48,068$181K0.01%-219,71013F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…44,534$168K<0.01%-2,33613F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/41,493$157K<0.01%+7,26213F-HRTimeline
Engineers Gate Manager LP41,043$155K<0.01%new13F-HRTimeline
Cornerstone Planning Group LLC2,562$146K0.02%+2,56113F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC38,639$146K<0.01%-106,25113F-HRTimeline
Creative Planningin group Creative Planning36,378$137K<0.01%-4,78613F-HRTimelineGroup
MML INVESTORS SERVICES, LLC34,550$130K<0.01%-4,76813F-HRTimeline
SIG BROKERAGE, LP34,502$130K0.03%new13F-HRTimeline
PROFUND ADVISORS LLC33,712$127K<0.01%+11,99913F-HRTimeline
Verition Fund Management LLC31,154$117K<0.01%013F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding30,277$114KnewTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC27,672$104K<0.01%+1,70313F-HRTimelineGroup
FARALLON CAPITAL MANAGEMENT, L.L.C.27,600$104K<0.01%013F-HR/ATimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …25,987$98K<0.01%-1,95813F-HRTimelineGroup
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…24,008$90.5K<0.01%-1,25013F-HRTimelineGroup
Police & Firemen's Retirement System of…23,573$88.9K<0.01%+7,26313F-HRTimeline
WOLVERINE TRADING, LLC21,820$82.7K<0.01%-23,70813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND21,447$80.9K<0.01%013F-HRTimeline
B. Riley Wealth Advisors, Inc.20,480$77.2K<0.01%+2,19213F-HRTimeline
AXQ CAPITAL, LP20,435$77K0.03%-20,84713F-HRTimeline
Cetera Investment Advisers20,206$76.2K<0.01%+2,05613F-HRTimeline
AlphaQuest LLC19,820$74.7K<0.01%013F-HRTimeline
SG Americas Securities, LLC18,040$68K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.17,748$67.8K<0.01%-33313F-HRTimelineGroup
KRAEMATON INVESTMENT ADVISORS, INC17,435$65.7K0.06%-16,15013F-HRTimeline
ProShare Advisors LLC17,081$64.4K<0.01%-1,81713F-HRTimeline
Composition Wealth, LLC17,020$64.2K<0.01%-1913F-HRTimeline
Fortis Capital Management LLC16,606$62.6K0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…16,033$60.4K<0.01%+15,91313F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…15,914$60K0.02%+2,76313F-HRTimelineGroup
SHERBROOKE PARK ADVISERS LLC15,904$60K0.03%new13F-HRTimeline
China Universal Asset Management Co., L…15,470$58.3K<0.01%-82013F-HRTimeline
KINGSWOOD WEALTH ADVISORS, LLC15,400$58.1K<0.01%+5,00013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…13,929$52.5K<0.01%+9,24913F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC13,690$51.6K<0.01%-7,14813F-HRTimelineGroup
Cambridge Investment Research Advisors,…12,532$47K<0.01%-6,13613F-HRTimeline
Sequoia Financial Advisors, LLC12,074$45.5K<0.01%new13F-HRTimeline
TWO SIGMA SECURITIES, LLC11,250$42.4K0.01%-6,86113F-HRTimeline
Sunbelt Securities, Inc.10,844$40.9K<0.01%013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC10,061$37.9K<0.01%new13F-HRTimeline
Geneos Wealth Management Inc.10,000$37.7K<0.01%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC9,774$36.8K<0.01%-58,40713F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…9,421$35.5K<0.01%-5,53513F-HRTimelineGroup
Advisory Services Network, LLC8,960$33.8K<0.01%-7,12713F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc8,620$32.5K<0.01%013F-HRTimelineGroup
Point72 (DIFC) Ltd8,143$30.7K<0.01%new13F-HRTimeline
North Star Investment Management Corp.8,000$30.2K<0.01%-9,00013F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding7,155$27K0Timeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP6,626$26.5K<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.6,909$26K<0.01%-20913F-HRTimeline
Point72 Europe (London) LLP5,484$20.7K<0.01%new13F-HRTimeline
Larson Financial Group LLC5,305$20K<0.01%+513F-HRTimeline
Quarry LP5,019$18.9K<0.01%+1,01913F-HRTimeline
HighTower Advisors, LLC4,909$18.5K<0.01%+2,45613F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…4,844$18.3K<0.01%-30213F-HRTimeline
FNY Investment Advisers, LLC5,000$18K0.01%new13F-HRTimeline
Arax Advisory Partners4,089$15.4K<0.01%+2,44713F-HRTimeline
TD Waterhouse Canada Inc.3,500$13.6K<0.01%013F-HRTimeline
NewEdge Advisors, LLC3,188$12K<0.01%-30013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2,881$10.9K<0.01%+1,19213F-HRTimelineGroup
AMALGAMATED BANK2,451$9K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC2,264$9K<0.01%+37313F-HRTimelineGroup
Activest Wealth Management2,001$7.54K<0.01%013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,899$7.16K<0.01%+7813F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…1,125$4.24K<0.01%-48713F-HRTimeline
Groupe la Francaisein group Groupe la Francaise1,200$3.87K<0.01%new13F-HRTimelineGroup
LANARK FINANCIAL, INC.1,000$3.77K<0.01%013F-HRTimeline
COUNTRY TRUST BANK1,000$3.77K<0.01%013F-HRTimeline
Global Retirement Partners, LLC1,000$3.77K<0.01%new13F-HRTimeline
HOLLENCREST CAPITAL MANAGEMENT770$2.9K<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC660$2K<0.01%-4313F-HRTimelineGroup
Stone House Investment Management, LLC500$1.89K<0.01%013F-HRTimeline
MassMutual Private Wealth & Trust, FSB418$1.58K<0.01%new13F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC286$1.08K<0.01%013F-HR/ATimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.235$1K<0.01%013F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…250$943<0.01%013F-HRTimelineGroup
IFP Advisors, Inc200$754<0.01%013F-HR/ATimeline
Sterling Capital Management LLC197$743<0.01%+1013F-HRTimeline
MAI Capital Management150$566<0.01%new13F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…101$381<0.01%-6713F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC95$358<0.01%-28113F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.75$283<0.01%-915,38313F-HRTimelineGroup
Farther Finance Advisors, LLC73$275<0.01%+5413F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…54$204<0.01%new13F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\51$192<0.01%-3,82013F-HRTimelineGroup
Parallel Advisors, LLC40$151<0.01%013F-HRTimeline
Bernard Wealth Management Corp.15$57<0.01%013F-HRTimeline
FIRST HORIZON CORP3$11<0.01%13F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2$8<0.01%013F-HRTimelineGroup