Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share (ATRA)

Q: What does CUSIP 046513107 represent in this 13F holders report?

CUSIP 046513107 is the security identifier for ATRA - Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held ATRA - Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share in Q1 2021?

148 institutional investors reported ATRA - Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share for Q1 2021. Use the holders table for investor-level position and value details.

CUSIP: 046513107

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock, par value $0.0001 per share
Shares outstanding: 9,606,000
Total 13F shares: 85,650,758
Share change: +59,612
Total reported value: $1,229,931,921
Put/Call ratio: 30%
Price per share: $14.36
Number of holders: 148
Value change: -$3,128,334
Number of buys: 80
Number of sells: 60

Quarterly Holders Quick Answers

What is CUSIP 046513107?
CUSIP 046513107 identifies ATRA - Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share 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 046513107:

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

Top shareholders of ATRA - Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share (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
BAUPOST GROUP LLC/MA	13F	Company	95%	9,108,988	$178,809,000	—	31 Dec 2020	13F
MAVERICK CAPITAL LTD	13F	Company	76%	7,324,539	$143,781,000	—	31 Dec 2020	13F
Redmile Group, LLC	13F	Company	71%	6,863,070	$134,722,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	67%	6,454,415	$126,700,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	65%	6,207,767	$121,858,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	59%	5,638,274	$110,680,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	38%	3,624,948	$71,158,000	—	31 Dec 2020	13F
Consonance Capital Management LP	13F	Company	37%	3,532,738	$69,348,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	31%	2,984,441	$58,585,000	—	31 Dec 2020	13F
Artal Group S.A.	13F	Company	29%	2,800,000	$54,964,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	28%	2,646,479	$51,950,000	—	31 Dec 2020	13F
WASATCH ADVISORS LP	13F	Company	21%	1,976,148	$38,791,000	—	31 Dec 2020	13F
KPCB XV Associates, LLC	13F	Company	20%	1,876,650	$36,839,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	19%	1,803,995	$35,412,000	—	31 Dec 2020	13F
BRIDGER MANAGEMENT, LLC	13F	Company	16%	1,524,760	$29,931,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	14%	1,357,222	$26,642,000	—	31 Dec 2020	13F
CREDIT SUISSE AG/	13F	Company	14%	1,329,488	$26,098,000	—	31 Dec 2020	13F
CITIGROUP INC	13F	Company	13%	1,263,785	$24,808,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	13%	1,204,541	$23,645,000	—	31 Dec 2020	13F
Point72 Asset Management, L.P.	13F	Company	12%	1,125,800	$22,099,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	11%	1,035,356	$20,324,000	—	31 Dec 2020	13F
Antipodean Advisors LLC	13F	Company	10%	1,000,000	$19,630,000	—	31 Dec 2020	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	10%	995,497	$19,542,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	9.5%	909,992	$17,862,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	9.4%	905,344	$17,775,000	—	31 Dec 2020	13F
TWO SIGMA ADVISERS, LP	13F	Company	7.3%	697,000	$13,682,000	—	31 Dec 2020	13F
MARSHALL WACE, LLP	13F	Company	6.6%	632,743	$12,420,000	—	31 Dec 2020	13F
Alberta Investment Management Corp	13F	Company	6.4%	611,530	$12,004,000	—	31 Dec 2020	13F
D. E. Shaw & Co., Inc.	13F	Company	6.3%	609,654	$11,968,000	—	31 Dec 2020	13F
DEUTSCHE BANK AG\	13F	Company	6.2%	593,380	$11,649,000	—	31 Dec 2020	13F
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	13F	Company	5.8%	559,700	$10,987,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	5.3%	508,365	$9,980,000	—	31 Dec 2020	13F
PINNACLE ASSOCIATES LTD	13F	Company	5.3%	505,049	$9,914,000	—	31 Dec 2020	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	4%	382,000	$7,499,000	—	31 Dec 2020	13F
Marshall Wace North America L.P.	13F	Company	3.8%	368,531	$7,234,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	3.4%	323,725	$6,355,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	3.2%	305,613	$5,998,000	—	31 Dec 2020	13F
PACIFIC HEIGHTS ASSET MANAGEMENT LLC	13F	Company	2.9%	275,000	$5,398,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	2.9%	274,592	$5,390,000	—	31 Dec 2020	13F
683 Capital Management, LLC	13F	Company	2.3%	220,848	$4,335,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	2.1%	198,242	$3,892,000	—	31 Dec 2020	13F
CAAS CAPITAL MANAGEMENT LP	13F	Company	2.1%	197,066	$3,868,000	—	31 Dec 2020	13F
AXA S.A.	13F	Company	2.1%	197,055	$3,868,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	1.7%	159,600	$3,133,000	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.7%	158,879	$3,119,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	1.6%	156,913	$3,080,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	1.3%	122,545	$2,406,000	—	31 Dec 2020	13F
PDT Partners, LLC	13F	Company	1.2%	118,455	$2,325,000	—	31 Dec 2020	13F
Atom Investors LP	13F	Company	1.2%	115,505	$2,267,000	—	31 Dec 2020	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	1.2%	114,482	$2,247,000	—	31 Dec 2020	13F

Institutional Holders of Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share (ATRA) as of Q1 2021

As of 31 Mar 2021, Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share (ATRA) was held by 148 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 85,650,758 shares. The largest 10 holders included BAUPOST GROUP LLC/MA, BlackRock Inc., Redmile Group, LLC, MAVERICK CAPITAL LTD, JPMORGAN CHASE & CO, VANGUARD GROUP INC, STATE STREET CORP, MORGAN STANLEY, CREDIT SUISSE AG/, and GOLDMAN SACHS GROUP INC. This page lists 148 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

144

Q1 2021 holders

148

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.