What does CUSIP 02155H200 represent in this 13F holders report?

CUSIP 02155H200 is the security identifier for ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share used to aggregate holder disclosures.

How many institutions held ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share in Q1 2024?

166 institutional investors reported ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share for Q1 2024. Use the holders table for investor-level position and value details.

Altimmune, Inc. - Common stock, par value $0.0001 per share (ALT)

CUSIP: 02155H200

Q1 2024 13F Holders as of 31 Mar 2024

Type / Class: Equity / Common stock, par value $0.0001 per share
Shares outstanding: 129,919,091
Total 13F shares: 44,351,359
Share change: +10,824,354
Total reported value: $451,471,154
Put/Call ratio: 59%
Price per share: $10.18
Number of holders: 166
Value change: +$108,533,821
Number of buys: 104
Number of sells: 66

Security key

02155H200

Report period

Q1 2024

Institutions

166

Top holders

ALT full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2024 Previous quarter: Q4 2023 Altimmune, Inc. SEC filings Altimmune, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 02155H200

Newer quarter: Q2 2024 Previous quarter: Q4 2023

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top shareholders of ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

AMERIPRISE FINANCIAL INC

13D/G signal

—

Evidence rows

Latest as of

31 Dec 2023

13F Lead comparable stake: 3.2% Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
AMERIPRISE FINANCIAL INC	13F Company 13F	3.2%	$47,066,425 4,183,682 shares	—	31 Dec 2023
BlackRock Finance, Inc.	13F Company 13F	3.1%	$45,502,954 4,044,707 shares	—	31 Dec 2023
VANGUARD GROUP INC	13F Company 13F	2.7%	$40,184,684 3,571,972 shares	—	31 Dec 2023
TANG CAPITAL MANAGEMENT LLC	13F Company 13F	2.1%	$30,937,500 2,750,000 shares	—	31 Dec 2023
Nuveen Asset Management, LLC	13F Company 13F	1.3%	$19,432,305 1,727,316 shares	—	31 Dec 2023
Point72 Asset Management, L.P.	13F Company 13F	0.96%	$14,023,125 1,246,500 shares	—	31 Dec 2023
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.92%	$13,428,594 1,193,528 shares	—	31 Dec 2023
MORGAN STANLEY	13F Company 13F	0.8%	$11,710,136 1,040,901 shares	—	31 Dec 2023

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
STATE STREET CORP	13F Company 13F	0.78%	$11,413,643 1,014,546 shares	—	31 Dec 2023
Timelo Investment Management Inc.	13F Company 13F	0.62%	$9,102,319 809,095 shares	—	31 Dec 2023
Invesco Ltd.	13F Company 13F	0.57%	$8,394,536 746,181 shares	—	31 Dec 2023
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F Company 13F	0.56%	$8,249,108 733,254 shares	—	31 Dec 2023
JANE STREET GROUP, LLC	13F Company 13F	0.45%	$6,529,996 580,444 shares	—	31 Dec 2023
GROUP ONE TRADING LLC	13F Company 13F	0.42%	$6,158,711 547,441 shares	—	31 Dec 2023
GOLDMAN SACHS GROUP INC	13F Company 13F	0.4%	$5,897,813 524,250 shares	—	31 Dec 2023
NORTHERN TRUST CORP	13F Company 13F	0.36%	$5,330,577 473,829 shares	—	31 Dec 2023
JACOBS LEVY EQUITY MANAGEMENT, INC	13F Company 13F	0.33%	$4,863,836 432,341 shares	—	31 Dec 2023
Lighthouse Investment Partners, LLC	13F Company 13F	0.31%	$4,492,766 399,357 shares	—	31 Dec 2023
ARDSLEY ADVISORY PARTNERS LP	13F Company 13F	0.26%	$3,822,610 341,000 shares	—	31 Dec 2023
Ensign Peak Advisors, Inc	13F Company 13F	0.25%	$3,676,241 326,777 shares	—	31 Dec 2023
FRED ALGER MANAGEMENT, LLC	13F Company 13F	0.25%	$3,674,903 326,658 shares	—	31 Dec 2023
KENNEDY CAPITAL MANAGEMENT LLC	13F Company 13F	0.23%	$3,427,313 304,650 shares	—	31 Dec 2023
Beirne Wealth Consulting Services, LLC	13F Company 13F	0.23%	$3,417,750 303,800 shares	—	31 Dec 2023
D. E. Shaw & Co., Inc.	13F Company 13F	0.22%	$3,259,418 289,726 shares	—	31 Dec 2023
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	0.2%	$2,942,471 261,518 shares	—	31 Dec 2023
GERBER, LLC	13F Company 13F	0.2%	$2,877,503 255,778 shares	—	31 Dec 2023
Jefferies Financial Group Inc.	13F Company 13F	0.17%	$2,430,000 216,000 shares	—	31 Dec 2023
GSA CAPITAL PARTNERS LLP	13F Company 13F	0.16%	$2,356,000 209,462 shares	—	31 Dec 2023
Susquehanna Portfolio Strategies, LLC	13F Company 13F	0.16%	$2,330,966 207,197 shares	—	31 Dec 2023
Knoll Capital Management, LLC	13F Company 13F	0.15%	$2,250,000 200,000 shares	—	31 Dec 2023
Bank of New York Mellon Corp	13F Company 13F	0.15%	$2,155,369 191,588 shares	—	31 Dec 2023
MILLENNIUM MANAGEMENT LLC	13F Company 13F	0.13%	$1,959,086 174,141 shares	—	31 Dec 2023
SECTORAL ASSET MANAGEMENT INC	13F Company 13F	0.13%	$1,921,500 170,800 shares	—	31 Dec 2023
SILVERARC CAPITAL MANAGEMENT, LLC	13F Company 13F	0.12%	$1,687,500 150,000 shares	—	31 Dec 2023
Cubist Systematic Strategies, LLC	13F Company 13F	0.11%	$1,631,081 144,985 shares	—	31 Dec 2023
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.11%	$1,605,431 142,705 shares	—	31 Dec 2023
Schonfeld Strategic Advisors LLC	13F Company 13F	0.1%	$1,518,750 135,000 shares	—	31 Dec 2023
IMC-Chicago, LLC	13F Company 13F	0.1%	$1,482,053 131,738 shares	—	31 Dec 2023
DCF Advisers, LLC	13F Company 13F	0.09%	$1,296,281 115,225 shares	—	31 Dec 2023
Squarepoint Ops LLC	13F Company 13F	0.09%	$1,268,696 112,773 shares	—	31 Dec 2023
GAGNON SECURITIES LLC	13F Company 13F	0.09%	$1,252,597 111,342 shares	—	31 Dec 2023
Pennant Investors, LP	13F Company 13F	0.08%	$1,235,250 109,800 shares	—	31 Dec 2023
Quinn Opportunity Partners LLC	13F Company 13F	0.08%	$1,181,250 105,000 shares	—	31 Dec 2023
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F Company 13F	0.08%	$1,164,375 103,500 shares	—	31 Dec 2023
Callodine Capital Management, LP	13F Company 13F	0.08%	$1,125,000 100,000 shares	—	31 Dec 2023
ROYAL BANK OF CANADA	13F Company 13F	0.07%	$1,035,000 92,066 shares	—	31 Dec 2023
JPMORGAN CHASE & CO	13F Company 13F	0.07%	$1,021,443 90,795 shares	—	31 Dec 2023
MARSHALL WACE, LLP	13F Company 13F	0.07%	$968,985 86,132 shares	—	31 Dec 2023
RHUMBLINE ADVISERS	13F Company 13F	0.06%	$915,897 81,414 shares	—	31 Dec 2023
BROWN WEALTH MANAGEMENT, LLC	13F Company 13F	0.06%	$843,750 75,000 shares	—	31 Dec 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2024

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

166

44,351,359

Rows loaded

169

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. An asterisk next to the price means the price is likely invalid.

Compare Q1 2024 vs Q4 2023 Across Filers

Q4 2023 holders

142

Q1 2024 holders

166

Holder diff

Investor	Q4 2023 Shares	Q1 2024 Shares	Share Diff	Share Chg %	Q4 2023 value	Q1 2024 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend