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

CUSIP 02155H200 is the security identifier for ALT - Altimmune, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ALT - Altimmune, Inc. - Common Stock in Q1 2021?

92 institutional investors reported ALT - Altimmune, Inc. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

Altimmune, Inc. - Common Stock (ALT)

CUSIP: 02155H200

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 104,413,190
Total 13F shares: 23,819,490
Share change: +3,322,757
Total reported value: $336,535,131
Put/Call ratio: 85%
Price per share: $14.13
Number of holders: 92
Value change: +$49,552,065
Number of buys: 58
Number of sells: 34

Quarterly Holders Quick Answers

What is CUSIP 02155H200?
CUSIP 02155H200 identifies ALT - Altimmune, Inc. - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 02155H200:

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

Top shareholders of ALT - Altimmune, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VR Adviser, LLC	13F	Company	4.3%	4,500,000	$50,760,000	—	31 Dec 2020	13F
BAKER BROS. ADVISORS LP	13F	Company	1.8%	1,884,451	$21,257,000	—	31 Dec 2020	13F
Capital World Investors	13F	Company	1.3%	1,404,000	$15,837,000	—	31 Dec 2020	13F
UBS Group AG	13F	Company	1.3%	1,401,690	$15,811,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	1.2%	1,237,226	$13,956,000	—	31 Dec 2020	13F
CREDIT SUISSE AG/	13F	Company	1.1%	1,193,719	$13,465,000	—	31 Dec 2020	13F
D. E. Shaw & Co., Inc.	13F	Company	1.1%	1,193,694	$13,465,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	1.1%	1,109,844	$12,519,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	0.95%	992,676	$11,198,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	0.68%	705,398	$7,957,000	—	31 Dec 2020	13F
ACUTA CAPITAL PARTNERS, LLC	13F	Company	0.55%	578,500	$6,525,000	—	31 Dec 2020	13F
Eversept Partners, LP	13F	Company	0.36%	380,000	$4,286,400	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.36%	377,188	$4,255,000	—	31 Dec 2020	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.33%	344,600	$3,887,000	—	31 Dec 2020	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.31%	324,502	$3,660,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.2%	208,545	$2,352,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.19%	198,258	$2,236,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.15%	161,632	$1,823,000	—	31 Dec 2020	13F
FIRST TRUST ADVISORS LP	13F	Company	0.12%	127,085	$1,434,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.12%	121,521	$1,371,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.1%	104,796	$1,182,000	—	31 Dec 2020	13F
FIRST MIDWEST BANK TRUST DIVISION	13F	Company	0.1%	103,442	$1,167,000	—	31 Dec 2020	13F
Parkman Healthcare Partners LLC	13F	Company	0.1%	100,000	$1,128,000	—	31 Dec 2020	13F
Beirne Wealth Consulting Services, LLC	13F	Company	0.07%	76,225	$860,000	—	31 Dec 2020	13F
Ikarian Capital, LLC	13F	Company	0.07%	75,445	$851,000	—	31 Dec 2020	13F
GROUP ONE TRADING LLC	13F	Company	0.07%	75,432	$851,000	—	31 Dec 2020	13F
Qube Research & Technologies Ltd	13F	Company	0.07%	74,358	$839,000	—	31 Dec 2020	13F
Cubist Systematic Strategies, LLC	13F	Company	0.07%	74,100	$836,000	—	31 Dec 2020	13F
HighVista Strategies LLC	13F	Company	0.07%	72,378	$816,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	0.06%	66,787	$753,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.06%	59,995	$677,000	—	31 Dec 2020	13F
ALPS ADVISORS INC	13F	Company	0.06%	59,475	$671,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.06%	57,624	$650,000	—	31 Dec 2020	13F
PREMIER ASSET MANAGEMENT LLC	13F	Company	0.05%	55,576	$627,000	—	31 Dec 2020	13F
Knoll Capital Management, LLC	13F	Company	0.05%	50,000	$564,000	—	31 Dec 2020	13F
PointState Capital LP	13F	Company	0.05%	50,000	$564,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.04%	46,782	$528,000	—	31 Dec 2020	13F
THRIVENT FINANCIAL FOR LUTHERANS	13F	Company	0.04%	45,439	$512,000	—	31 Dec 2020	13F
Hayden Royal, LLC	13F	Company	0.04%	44,383	$501,000	—	31 Dec 2020	13F
GSA CAPITAL PARTNERS LLP	13F	Company	0.04%	42,925	$484,000	—	31 Dec 2020	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.04%	41,000	$462,000	—	31 Dec 2020	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.04%	40,852	$461,000	—	31 Dec 2020	13F
Jump Financial, LLC	13F	Company	0.04%	36,700	$414,000	—	31 Dec 2020	13F
683 Capital Management, LLC	13F	Company	0.03%	32,678	$369,000	—	31 Dec 2020	13F
B. Riley Wealth Advisors, Inc.	13F	Company	0.03%	32,650	$369,000	—	31 Dec 2020	13F
MARSHALL WACE, LLP	13F	Company	0.03%	31,049	$350,000	—	31 Dec 2020	13F
JANE STREET GROUP, LLC	13F	Company	0.03%	30,825	$348,000	—	31 Dec 2020	13F
Parallax Volatility Advisers, L.P.	13F	Company	0.03%	30,714	$346,000	—	31 Dec 2020	13F
BARCLAYS PLC	13F	Company	0.03%	28,300	$319,000	—	31 Dec 2020	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.03%	27,800	$314,000	—	31 Dec 2020	13F

Institutional Holders of Altimmune, Inc. - Common Stock (ALT) as of Q1 2021

As of 31 Mar 2021, Altimmune, Inc. - Common Stock (ALT) was held by 92 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 23,819,490 shares. The largest 10 holders included VR Adviser, LLC, STATE STREET CORP, BAKER BROS. ADVISORS LP, Capital World Investors, VANGUARD GROUP INC, D. E. Shaw & Co., Inc., CITADEL ADVISORS LLC, CAAS CAPITAL MANAGEMENT LP, BlackRock Inc., and CREDIT SUISSE AG/. This page lists 92 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

Q1 2021 holders

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.