ALTIMMUNE INC

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

ALT (ALTIMMUNE INC) is held by 113 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($62M), STATE STREET CORP ($36.8M), VANGUARD CAPITAL MANAGEMENT LLC ($24.9M). Net institutional sentiment: Bullish.

113

Holders

(11 Elite)

$322.2M

Total Value

74% (118)

Consensus

87 buying - 31 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)28

Insider (Form 4)55

Activist (13D/13G)37

Congressional (STOCK Act)60

Holder Quality

64

★★★★★

Elite

62

★★★★

Strong

72

★★★

Solid

30

★★

Below

47

★

Weak

Held by 113 funds

11 elite

Who's Trading

Source dates: Price Aug 31, 2026 · Insiders Aug 13, 2026 · Activists May 15, 2026 · Congress none

InsiderDBDurso Jerome BenedictBuy $44KAug 13, 2026

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

ActivistSTATE STREET CORPORATION5.5%May 12, 2026

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Top Holders

Top Holders (113)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	20.4M(+59.3%)	$62M	0.0%	-32.34%	42
STATE STREET CORP	Increased	12.1M(+69.3%)	$36.8M	0.0%	-37.73%	43
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	8.2M(+44.5%)	$24.9M	0.0%	-18.48%	39
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	7.3M(+36.2%)	$22.3M	0.0%	-19.48%	37
MWMARSHALL WACE, LLP	Increased	6.8M(+70.3%)	$20.8M	0.0%	-14.17%	42
VIKING GLOBAL INVESTORS LP	New	6.7M	$20.4M	0.1%	+2.30%	39
RA CAPITAL MANAGEMENT, L.P.	New	6.5M	$19.8M	0.2%	+2.30%	47
GEODE CAPITAL MANAGEMENT, LLC	Increased	5M(+61.3%)	$15.2M	0.0%	-35.07%	41
Woodline Partners LP	New	3.4M	$10.3M	0.0%	+2.30%	38
MILLENNIUM MANAGEMENT LLC	Increased	3.3M(+1.6%)	$10.1M	0.0%	-25.02%	28
Nuveen, LLC	Increased	2.4M(+3.0%)	$7.3M	0.0%	-21.98%	28
TWO SIGMA INVESTMENTS, LP	Decreased	2.4M(-3.9%)	$7.2M	0.0%	-26.48%	0
GOLDMAN SACHS GROUP INC	Increased	2.2M(+64.0%)	$6.7M	0.0%	-23.05%	40
NORTHERN TRUST CORP	Increased	1.6M(+60.5%)	$4.9M	0.0%	-36.09%	39
VFVANGUARD FIDUCIARY TRUST CO	Increased	1.3M(+48.7%)	$3.9M	0.0%	-18.01%	37
AQR CAPITAL MANAGEMENT LLC	Increased	1.2M(+1328.8%)	$3.7M	0.0%	+0.04%	43
CITADEL ADVISORS LLC	Increased	983,559(+119.1%)	$3M	0.0%	-6.53%	43
UBS Group AG	Decreased	866,385(-4.2%)	$2.6M	0.0%	-50.62%	0
MORGAN STANLEY	Decreased	758,435(-2.2%)	$2.3M	0.0%	-37.99%	0
BANK OF AMERICA CORP /DE/	Increased	757,919(+32.9%)	$2.3M	0.0%	-23.66%	33

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer