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 2019?

13 institutional investors reported ALT - Altimmune, Inc. - Common stock, par value $0.0001 per share for Q1 2019. 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 2019 13F Holders as of 31 Mar 2019

Type / Class: Equity / Common stock, par value $0.0001 per share
Shares outstanding: 129,919,091
Total 13F shares: 1,114,198
Share change: +307,396
Total reported value: $3,229,903
Put/Call ratio: 103%
Price per share: $2.90
Number of holders: 13
Value change: +$1,231,709
Number of buys: 9
Number of sells: 9

Security key

02155H200

Report period

Q1 2019

Institutions

Top holders

ALT full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2019 Previous quarter: Q4 2018 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 2019 Previous quarter: Q4 2018

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

SABBY MANAGEMENT, LLC

13D/G signal

—

Evidence rows

Latest as of

31 Dec 2018

13F Lead comparable stake: 0.18% Showing first 8 of 17 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
SABBY MANAGEMENT, LLC	13F Company 13F	0.18%	$490,000 237,921 shares	—	31 Dec 2018
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	0.15%	$401,000 194,506 shares	—	31 Dec 2018
VANGUARD GROUP INC	13F Company 13F	0.08%	$227,000 110,369 shares	—	31 Dec 2018
OXFORD ASSET MANAGEMENT LLP	13F Company 13F	0.07%	$175,000 84,870 shares	—	31 Dec 2018
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	0.05%	$128,000 61,906 shares	—	31 Dec 2018
BANK OF MONTREAL /CAN/	13F Company 13F	0.03%	$82,000 40,000 shares	—	31 Dec 2018
Virtu Financial LLC	13F Company 13F	0.01%	$34,000 16,274 shares	—	31 Dec 2018
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.01%	$33,000 16,112 shares	—	31 Dec 2018

Show 9 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
D. E. Shaw & Co., Inc.	13F Company 13F	0.01%	$27,000 13,100 shares	—	31 Dec 2018
TWO SIGMA INVESTMENTS, LP	13F Company 13F	0.01%	$26,000 12,481 shares	—	31 Dec 2018
JANE STREET GROUP, LLC	13F Company 13F	0.01%	$21,000 10,301 shares	—	31 Dec 2018
MORGAN STANLEY	13F Company 13F	0%	$10,000 4,693 shares	—	31 Dec 2018
NORDEA INVESTMENT MANAGEMENT AB	13F Company 13F	0%	$8,000 3,700 shares	—	31 Dec 2018
UBS Group AG	13F Company 13F	0%	$1,000 631 shares	—	31 Dec 2018
GROUP ONE TRADING LLC	13F Company 13F	0%	$1,000 468 shares	—	31 Dec 2018
American Portfolios Advisors	13F Company 13F	0%	$206 100 shares	—	31 Dec 2018
BNP PARIBAS FINANCIAL MARKETS	13F Company 13F	0%	$2 1 shares	—	31 Dec 2018

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 2019

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

Institutions

1,114,198

Rows loaded

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 2019 vs Q4 2018 Across Filers

Q4 2018 holders

Q1 2019 holders

Holder diff

-3

Investor	Q4 2018 Shares	Q1 2019 Shares	Share Diff	Share Chg %	Q4 2018 value	Q1 2019 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend