ALTIMMUNE INC (ALT) is held by 104 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling ALT?

In Q1 2026, 69 institutions opened or increased positions in ALTIMMUNE INC while 38 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on ALT?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for ALTIMMUNE INC.

How many hedge funds hold ALT?

104 institutional investors report holding ALTIMMUNE INC (ALT) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into ALT?

As of Q1 2026, tracked institutions in ALTIMMUNE INC show 69 buyers versus 38 sellers — net inflows.

ALTIMMUNE INC

ALT·02155H200·US·Common Stock·Healthcare - Biotechnology-13D/G

104

Holders

(11 Elite)

$202.9M

Total Value

64% (107)

Consensus

69 buying - 38 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 104 funds

11 elite

Who's Trading

ActivistTATANG CAPITAL MANAGEMENT, LLC0.3%May 15, 2026

Activist

STATE STREET CORPORATION5.5%May 12, 2026

ActivistTCTCG Crossover GP II, LLC5.0%May 1, 2026

Activist

RA Capital Management, L.P.6.5%May 1, 2026

Activist

VIKING GLOBAL INVESTORS LP6.7%May 1, 2026

ActivistDTDeep Track Capital, LP10.0%Apr 30, 2026

InsiderGJGILL JOHNBuy $31KApr 6, 2026

InsiderDBDurso Jerome BenedictBuy $47KApr 1, 2026

InsiderWLWEAVER GREGORY LBuy $31KApr 1, 2026

InsiderDBDurso Jerome BenedictBuy $71KMar 6, 2026

View all insider trades View all activist filings

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	12.8M(+31.9%)	$39.4M	0.0%	-44.74%	37
STATE STREET CORP	Increased	7.1M(+39.6%)	$22M	0.0%	-51.96%	38
VAVANGUARD CAPITAL MANAGEMENT LLC	New	5.7M	$17.4M	0.0%	-26.68%	39
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	5.4M	$16.6M	0.0%	-26.68%	39
MWMARSHALL WACE, LLP	Increased	4M(+335.4%)	$12.4M	0.0%	-24.39%	45
MILLENNIUM MANAGEMENT LLC	Increased	3.3M(+1471.1%)	$10M	0.0%	-26.77%	45
GEODE CAPITAL MANAGEMENT, LLC	Increased	3.1M(+35.5%)	$9.6M	0.0%	-48.02%	36
AIAlyeska Investment Group, L.P.	New	2.6M	$8.1M	0.0%	-26.68%	38
TWO SIGMA INVESTMENTS, LP	Increased	2.5M(+95.8%)	$7.6M	0.0%	-27.90%	44
Nuveen, LLC	Increased	2.3M(+87.6%)	$7.2M	0.0%	-24.04%	43
GOLDMAN SACHS GROUP INC	Increased	1.4M(+0.1%)	$4.2M	0.0%	-34.86%	27
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Decreased	1.3M(-3.1%)	$4.1M	0.0%	-45.95%	0
DIMENSIONAL FUND ADVISORS LP	Increased	1M(+268.7%)	$3.2M	0.0%	-36.21%	43
NORTHERN TRUST CORP	Increased	996,721(+39.2%)	$3.1M	0.0%	-48.91%	35
UBS Group AG	Increased	904,768(+40.9%)	$2.8M	0.0%	-51.57%	35
VFVANGUARD FIDUCIARY TRUST CO	New	869,318	$2.7M	0.0%	-26.68%	36
MORGAN STANLEY	Decreased	775,258(-43.0%)	$2.4M	0.0%	-39.19%	0
DED. E. Shaw & Co., Inc.	Decreased	727,001(-45.9%)	$2.2M	0.0%	-18.18%	0
FMR LLC	Increased	673,964(+19.5%)	$2.1M	0.0%	-18.96%	31
Point72 Asset Management, L.P.	New	665,289	$2M	0.0%	-26.68%	36