ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

Holders for Q4 2025 Position Changes for Q4 2025

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
EcoR1 Capital, LLC573,183$10,369
Redmile Group, LLC441,701$7,990
VANGUARD GROUP INC225,940$4,087
MARSHALL WACE, LLP148,632$2,689
GLOBEFLEX CAPITAL L P77,224$1,397
BlackRock, Inc.67,108$1,214
GEODE CAPITAL MANAGEMENT, LLC62,381$1,129
MACKENZIE FINANCIAL CORP58,668$1,047
ACADIAN ASSET MANAGEMENT LLC54,048$1
STALEY CAPITAL ADVISERS INC50,000$905
BRIDGEWAY CAPITAL MANAGEMENT, LLC32,691$591
RENAISSANCE TECHNOLOGIES LLC30,040$543
STATE STREET CORP26,453$479
Cambridge Investment Research Advisors, Inc.22,864$0
Quadrature Capital Ltd20,321$368
Point72 Asset Management, L.P.18,296$331
FMR LLC17,156$310
MORGAN STANLEY15,991$289
CITADEL ADVISORS LLC15,577$282
SUSQUEHANNA INTERNATIONAL GROUP, LLP14,018$254
JANE STREET GROUP, LLC13,990$253
NORTHERN TRUST CORP12,340$223
Walleye Capital LLC12,169$220
Connor, Clark & Lunn Investment Management Ltd.10,446$189
BANK OF AMERICA CORP /DE/10,387$188
DIMENSIONAL FUND ADVISORS LP10,028$181
Tower Research Capital LLC (TRC)1,737$31
SBI Securities Co., Ltd.1,404$25
UBS Group AG1,397$25
Private Wealth Asset Management, LLC900$16
ROYAL BANK OF CANADA850$15
JONES FINANCIAL COMPANIES LLLP703$13
WELLS FARGO & COMPANY/MN251$5
JPMORGAN CHASE & CO216$4
Banque Transatlantique SA176$3
RHUMBLINE ADVISERS175$3
FEDERATED HERMES, INC.130$2
BNP PARIBAS ARBITRAGE, SA46$1
KERR FINANCIAL PLANNING Corp24$0
OSAIC HOLDINGS, INC.10$0
Rockefeller Capital Management L.P.8$0
Total (41 institutions)2,049,679$35,674