Company · Ownership research

Altimmune, Inc. ALT

CIK 0001326190 · CUSIP 02155H200

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 02155H200 (ALT), not CUSIP 02155H900 (ALT), CUSIP 02155H950 (ALT), and does not merge CUSIPs.

This page lists the top 20 of 171 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	STATE STREET CORP CIK 93751 · View history	$88.05M 8,649,270 shares	0.00%	+7.63M(+752.50%)Added	SEC filing ↗ May 15, 2024	▾
02	BlackRock Inc. CIK 1364742 · View history	$41.15M 4,042,226 shares	0.00%	-2.48K(-0.10%)Reduced	SEC filing ↗ May 10, 2024	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$31.85M 3,128,728 shares	0.00%	-443.24K(-12.40%)Reduced	SEC filing ↗ May 10, 2024	▾
04	TANG CAPITAL MANAGEMENT LLC CIK 1232621 · View history	$28.00M 2,750,000 shares	2.91%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
05	MORGAN STANLEY CIK 895421 · Amended · View history	$22.52M 2,211,948 shares	0.00%	+1.17M(+112.50%)Added	SEC filing ↗ Oct 17, 2024	▾
06	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$17.40M 1,709,304 shares	0.00%	-2.47M(-59.10%)Reduced	SEC filing ↗ May 15, 2024	▾
07	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$16.19M 1,590,150 shares	0.01%	+1.42M(+813.10%)Added	SEC filing ↗ May 15, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$12.59M 1,236,798 shares	0.00%	+43.27K(+3.60%)Added	SEC filing ↗ May 13, 2024	▾
09	FRED ALGER MANAGEMENT, LLC CIK 3520 · View history	$10.11M 993,516 shares	0.05%	+666.86K(+204.10%)Added	SEC filing ↗ May 15, 2024	▾
10	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$9.33M 916,254 shares	0.01%	+183.00K(+25.00%)Added	SEC filing ↗ May 7, 2024	▾
11	Nuveen Asset Management, LLC CIK 1521019 · View history	$9.29M 913,000 shares	0.00%	-814.32K(-47.10%)Reduced	SEC filing ↗ May 13, 2024	▾
12	Portolan Capital Management, LLC CIK 1350290 · View history	$9.03M 887,255 shares	0.69%	+887.25KNew	SEC filing ↗ May 15, 2024	▾
13	Rafferty Asset Management, LLC CIK 1389426 · View history	$8.99M 882,628 shares	0.03%	+882.63KNew	SEC filing ↗ May 13, 2024	▾
14	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$8.77M 861,415 shares	0.00%	+337.17K(+64.30%)Added	SEC filing ↗ May 15, 2024	▾
15	READYSTATE ASSET MANAGEMENT LP CIK 1900923 · View history	$8.41M 825,800 shares	0.30%	+825.80KNew	SEC filing ↗ May 13, 2024	▾
16	CITIGROUP INC CIK 831001 · View history	$7.56M 742,913 shares	0.01%	+735.34K(+9,704.80%)Added	SEC filing ↗ May 10, 2024	▾
17	Knoll Capital Management, LLC CIK 1325083 · View history	$5.77M 567,219 shares	3.59%	+367.22K(+183.60%)Added	SEC filing ↗ May 15, 2024	▾
18	BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history	$5.09M 499,872 shares	0.00%	+472.89K(+1,753.00%)Added	SEC filing ↗ May 15, 2024	▾
19	NORTHERN TRUST CORP CIK 73124 · View history	$5.03M 493,968 shares	0.00%	+20.14K(+4.30%)Added	SEC filing ↗ May 14, 2024	▾
20	UBS Group AG CIK 1610520 · View history	$4.99M 490,001 shares	0.00%	+431.74K(+741.10%)Added	SEC filing ↗ May 13, 2024	▾

Showing 20 / 171 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

171

Cancelled or null records excluded

Disclosed shares

44,418,238

Not deduplicated across managers

Disclosed value

$452.15M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Altimmune, Inc. · Q1 2024

Explore all 171 reporting institutions.

This page includes 20 of 171 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.