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Disclosery

ALT ALTIMMUNE INC

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COM NEW (common), issuer CIK 1326190

203 managers (210 13F filers) reported a position in ALT shares at 2026-06-30, 150,053,467 shares in all. 58 filers opened a position and 18 filers sold out during the quarter.

Managers
203
13F filers
210
New
58
Added
86
Reduced
33
Sold out
18
Shares held by filers
150,053,467

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
BlackRock, Inc.in group BlackRock, Inc.20,385,284$62M<0.01%+7,590,00713F-HRTimelineGroup
Deep Track Capital, LP19,250,000$58.5M0.86%new13F-HRTimeline
VANGUARD GROUP INCgroup of 5 filers holding16,892,041$51.4M+4,929,719Timeline
STATE STREET CORPin group STATE STREET CORP12,098,540$36.8M<0.01%+4,952,99013F-HRTimelineGroup
TCG Crossover Management, LLC10,000,000$30.4M0.73%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP6,841,055$20.8M0.02%+2,823,15413F-HRTimelineGroup
VIKING GLOBAL INVESTORS LPin group VIKING GLOBAL INVESTORS LP6,700,000$20.4M0.06%new13F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.6,500,000$19.8M0.17%new13F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC5,011,314$15.2M<0.01%+1,904,21813F-HRTimelineGroup
Woodline Partners LP3,400,312$10.3M0.03%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC3,309,122$10.1M0.01%+50,93113F-HRTimelineGroup
Trails Edge Capital Partners, LP2,660,000$8.09M1.28%new13F-HRTimeline
Nuveen, LLCin group TIAA2,405,354$7.31M<0.01%+70,75313F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP2,381,142$7.24M0.01%-97,75813F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,214,450$6.73M<0.01%+863,80113F-HRTimelineGroup
GREAT POINT PARTNERS LLC1,741,232$5.29M1.25%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,599,226$4.86M<0.01%+602,50513F-HRTimelineGroup
Weiss Asset Management LPin group Weiss Asset Management LP1,530,803$4.65M0.05%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Nantahala Capital Management, LLC1,500,000$4.56M0.28%new13F-HR/ATimeline
Cormorant Asset Management, LP1,250,000$3.8M0.19%new13F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,220,949$3.71M<0.01%+1,135,49513F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC983,559$2.99M<0.01%+534,68613F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding870,539$2.65M-38,383Timeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding834,452$2.54M-491,504Timeline
MORGAN STANLEYin group MORGAN STANLEY758,435$2.31M<0.01%-16,82313F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/757,919$2.3M<0.01%+187,71613F-HRTimelineGroup
Ghisallo Capital Management LLC750,000$2.28M0.04%new13F-HRTimeline
FMR LLCin group FMR LLC748,974$2.28M<0.01%+75,01013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp689,713$2.1M<0.01%+276,21013F-HRTimelineGroup
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC666,022$2.02M0.09%013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP639,436$1.94M<0.01%-406,49013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co624,499$1.9M<0.01%+272,81813F-HRTimelineGroup
Hennion & Walsh Asset Management, Inc.518,198$1.58M0.04%+316,20913F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.486,884$1.48M<0.01%-178,40513F-HRTimelineGroup
Rock Springs Capital Management LP471,465$1.43M0.07%new13F-HRTimeline
Beirne Wealth Consulting Services, LLC421,858$1.28M0.26%+10,00013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…420,300$1.28M<0.01%+172,14213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS371,176$1.13M<0.01%-63,90213F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC351,587$1.07M<0.01%+158,71613F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.332,592$1.01M<0.01%+104,73513F-HRTimelineGroup
RHUMBLINE ADVISERS309,606$941K<0.01%+153,93513F-HRTimeline
Janney Montgomery Scott LLC302,610$920K<0.01%+130,00013F-HRTimeline
LMR Partners LLPin group LMR Partners LLP300,000$912K0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC293,948$894K<0.01%+217,62113F-HRTimelineGroup
Steward Partners Investment Advisory, L…266,671$811K<0.01%+14,89013F-HRTimeline
MANGROVE PARTNERS IM, LLC239,280$727K0.05%013F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.237,522$722K<0.01%013F-HRTimelineGroup
BROWN WEALTH MANAGEMENT, LLC236,136$718K0.16%013F-HRTimeline
Rafferty Asset Management, LLC225,060$684K<0.01%-6,21113F-HRTimeline
Creative Planningin group Creative Planning218,281$664K<0.01%+179,05213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN217,430$661K<0.01%+121,52313F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC214,574$652K<0.01%+54,20013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC202,380$615K<0.01%+184,25413F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.201,638$613K<0.01%-525,36313F-HRTimelineGroup
ALPS ADVISORS INC197,374$600K<0.01%+91,49313F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\195,014$593K<0.01%+70,49813F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP192,368$585K<0.01%+57,75213F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC190,000$578K0.01%new13F-HRTimelineGroup
Man Group plcin group Man Group plc173,872$529K<0.01%+44,02613F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/165,390$503K<0.01%+72,87813F-HRTimeline
Knoll Capital Management, LLC160,000$486K0.27%013F-HRTimeline
Birchview Capital, LP152,681$464K0.22%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.140,850$434K<0.01%+69,09013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…130,781$398K0.01%+52,37813F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd128,088$389K0.01%new13F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding126,380$382K+42,556Timeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…125,363$381K0.09%+73,62013F-HRTimelineGroup
WEALTH EFFECTS LLC122,650$373K0.1%-9,30013F-HRTimeline
LPL Financial LLC121,952$371K<0.01%+18,19613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…116,856$355K<0.01%+44,64313F-HRTimelineGroup
PROFUND ADVISORS LLC113,598$345K0.01%+10,45713F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.110,000$334K<0.01%013F-HRTimelineGroup
SILVERCREST ASSET MANAGEMENT GROUP LLC103,500$315K<0.01%013F-HRTimeline
Summit Financial Wealth Advisors, LLC103,288$314K0.04%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO106,625$313K<0.01%-20,87313F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC102,823$313K0.01%new13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC101,123$307K<0.01%new13F-HRTimelineGroup
NOMURA ASSET MANAGEMENT INTERNATIONAL I…in group NOMURA ASSET MANAGEMENT CO LTD100,000$304K<0.01%013F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD87,300$265K<0.01%+34,00013F-HRTimeline
Grantham, Mayo, Van Otterloo & Co. LLC83,837$255K<0.01%-42,55213F-HRTimeline
KINGSWOOD WEALTH ADVISORS, LLC74,500$226K0.01%-2,00013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC71,600$218K<0.01%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC68,571$208K<0.01%-3,39713F-HRTimelineGroup
IEQ CAPITAL, LLC66,954$204K<0.01%new13F-HRTimeline
PVG ASSET MANAGEMENT CORP66,120$201K0.12%013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC64,460$200K<0.01%-89,90513F-HRTimelineGroup
Leonteq Securities AG64,000$195K0.01%-1,00013F-HRTimeline
Police & Firemen's Retirement System of…58,625$178K<0.01%+23,19213F-HRTimeline
AXQ CAPITAL, LP56,810$173K0.02%+9,05813F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC56,743$172K<0.01%new13F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP54,226$165K<0.01%+23,67313F-HR/ATimelineGroup
MERCER GLOBAL ADVISORS INC /ADV53,115$161K<0.01%new13F-HR/ATimeline
NEW YORK STATE COMMON RETIREMENT FUND52,747$160K<0.01%+31,30013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …52,036$158K<0.01%+17,27313F-HRTimelineGroup
Cetera Investment Advisers51,901$158K<0.01%+16,44813F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…49,740$151K<0.01%+3,37013F-HRTimelineGroup
SG Americas Securities, LLC47,089$143K<0.01%-8,53613F-HRTimeline
Caption Management, LLC46,617$142K<0.01%-27,82113F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC45,911$140K<0.01%+15,15013F-HRTimeline
Quantbot Technologies LP45,632$139K0.01%new13F-HRTimeline
Graham Capital Management, L.P.44,940$137K<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…43,696$133K<0.01%+27,60413F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC39,783$121K<0.01%+18,77213F-HRTimelineGroup
Engineers Gate Manager LP38,037$116K<0.01%-78,07513F-HRTimeline
Kovack Advisors, Inc.36,000$109K0.01%-25013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC35,469$108K<0.01%new13F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC35,190$107K<0.01%+13,40013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC35,077$107K<0.01%new13F-HRTimeline
MML INVESTORS SERVICES, LLC34,550$105K<0.01%013F-HRTimeline
ProShare Advisors LLC32,427$98.6K<0.01%+7,90413F-HRTimeline
Sequoia Financial Advisors, LLC32,285$98.1K<0.01%new13F-HRTimeline
E Fund Management Co., Ltd.31,734$96.5K<0.01%+2,66213F-HRTimeline
China Universal Asset Management Co., L…30,951$94.1K0.01%+8,72813F-HRTimeline
BLAIR WILLIAM & CO/IL30,660$93.2K<0.01%+2,43713F-HRTimeline
HUB Investment Partners, LLC30,319$92.2K<0.01%+10113F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…28,649$87.1K<0.01%+2,14113F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…25,989$79.3K<0.01%new13F-HRTimeline
TWO SIGMA SECURITIES, LLC25,435$77.3K0.01%new13F-HRTimeline
Vontobel Holding Ltd.in group Vontobel Holding Ltd.25,000$76K<0.01%+5,00013F-HRTimelineGroup
nVerses Capital, LLC24,408$74.2K0.11%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS23,960$72.8K<0.01%new13F-HRTimeline
North Star Investment Management Corp.22,000$66.9K<0.01%+5,00013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC21,384$65K<0.01%-32,41213F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC21,218$64.5K<0.01%+6,45513F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.21,078$64.1K<0.01%+40013F-HRTimelineGroup
Voleon Capital Management LP20,715$63K<0.01%-6,42713F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…19,717$59.9K<0.01%-15,93313F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc19,289$58.6K<0.01%+7,79313F-HRTimelineGroup
Atria Investments, Inc19,017$57.8K<0.01%new13F-HRTimeline
PFG Investments, LLC19,000$57.8K<0.01%+5,50013F-HRTimeline
Jain Global LLC18,947$57.6K<0.01%new13F-HRTimeline
XPONANCE LLC18,917$57.5K<0.01%+8,13413F-HRTimeline
Vines Capital Management, LLC18,884$57.4K0.05%013F-HR/ATimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC18,664$56.7K<0.01%new13F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…18,039$54.8K<0.01%+7,35913F-HRTimelineGroup
Centiva Capital, LP17,938$54.5K<0.01%new13F-HRTimeline
SYON CAPITAL LLC17,118$52K<0.01%new13F-HRTimeline
Composition Wealth, LLC17,000$51.7K<0.01%013F-HRTimeline
CHOREO, LLC16,709$50.8K<0.01%+1813F-HRTimeline
EFG International AGin group EFG International AG16,500$50.2K<0.01%013F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd16,100$48.9K<0.01%new13F-HRTimelineGroup
PKS Advisory Services, LLC15,600$47.4K0.01%new13F-HRTimeline
DCF Advisers, LLC14,700$44.7K0.01%013F-HRTimeline
Polymer Capital Management (US) LLC14,001$42.6K0.01%-9,99813F-HRTimeline
Sciencast Management LP13,566$41.2K0.01%new13F-HRTimeline
Aigen Investment Management, LP13,496$41K0.01%new13F-HRTimeline
R Squared Ltd13,264$40.3K0.02%new13F-HRTimeline
SMITH, MOORE & CO.13,205$40.1K<0.01%013F-HRTimeline
Xcelsior Advisor Partners LLC13,000$39.5K0.01%new13F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P12,855$39.1K<0.01%-1,50013F-HRTimeline
BRIGHTON JONES LLC12,596$38.3K<0.01%new13F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth12,499$38K<0.01%new13F-HRTimelineGroup
Abel Hall, LLC11,527$35K0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA11,904$35K<0.01%-13,41313F-HRTimelineGroup
Arax Advisory Partners11,350$34.5K<0.01%+11,01113F-HRTimeline
Cambridge Investment Research Advisors,…11,206$34K<0.01%013F-HR/ATimeline
Foundations Investment Advisors, LLC11,052$33.6K<0.01%013F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.10,974$33.4K<0.01%new13F-HRTimelineGroup
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC10,850$33K<0.01%+35013F-HRTimelineGroup
Advisory Services Network, LLC10,760$32.7K<0.01%-4,50013F-HRTimeline
Geneos Wealth Management Inc.10,000$30.4K<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP10,156$28.6K<0.01%-15,71313F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC8,499$25.8K<0.01%+8,49713F-HRTimelineGroup
SBI Securities Co., Ltd.8,062$24.5K<0.01%-25113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…7,477$22.7K<0.01%-7,01113F-HRTimelineGroup
Allworth Financial LP6,892$21K<0.01%+6,82213F-HRTimeline
Activest Wealth Management5,001$15.2K<0.01%013F-HRTimeline
Sterling Capital Management LLC4,006$12.2K<0.01%+3,15913F-HRTimeline
Integrated Wealth Concepts LLC3,963$12K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…3,860$11.7K<0.01%+2,30813F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.3,844$11.7K<0.01%+1,51313F-HRTimeline
Pacer Advisors, Inc.3,759$11K<0.01%new13F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…3,100$9.42K<0.01%+3,00013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,737$8.32K<0.01%-4,38713F-HR/ATimeline
BELLEVUE ASSET MANAGEMENT, LLC2,433$7.4K<0.01%013F-HRTimeline
HighMark Wealth Management LLC2,000$6.08K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.1,910$5.81K<0.01%-1,94813F-HRTimelineGroup
NewEdge Advisors, LLC1,888$5.74K<0.01%013F-HRTimeline
SUMMIT SECURITIES GROUP LLC1,507$4.58K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC1,044$3.16K<0.01%+90313F-HRTimeline
MassMutual Private Wealth & Trust, FSB1,000$3.04K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC895$2.72K<0.01%+80013F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.760$2.31K<0.01%new13F-HRTimelineGroup
Strategic Wealth Partners, Ltd.700$2.13K<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC551$1.68K<0.01%+53813F-HRTimeline
Stone House Investment Management, LLC526$1.6K<0.01%013F-HRTimeline
Essential Partners LLC400$1.22K<0.01%+37313F-HRTimeline
Clearstead Advisors, LLC328$998<0.01%+28813F-HRTimeline
Wealth Enhancement Trust Services, Inc.306$930<0.01%new13F-HR/ATimeline
Bogart Wealth, LLC298$906<0.01%013F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC286$870<0.01%013F-HRTimeline
Caitong International Asset Management …257$781<0.01%-16,96013F-HRTimeline
SJS Investment Consulting Inc.234$712<0.01%+21813F-HRTimeline
RMG Wealth Management LLC225$659<0.01%new13F-HRTimeline
True Wealth Design, LLC196$596<0.01%new13F-HRTimeline
Bare Financial Services, Inc196$596<0.01%new13F-HRTimeline
GAMMA Investing LLC134$407<0.01%new13F-HRTimeline
HARBOUR INVESTMENTS, INC.100$304<0.01%013F-HRTimeline
Parallel Advisors, LLC40$122<0.01%013F-HRTimeline
Bernard Wealth Management Corp.15$46<0.01%013F-HRTimeline