ATRA ATARA BIOTHERAPEUTICS INC
FollowCOM NEW (common), issuer CIK 1604464
41 managers (41 13F filers) reported a position in ATRA shares at 2025-12-31, 2,049,679 shares in all. 7 filers opened a position and 2 filers sold out during the quarter.
- Managers
- 41
- 13F filers
- 41
- New
- 7
- Added
- 12
- Reduced
- 8
- Sold out
- 2
- Shares held by filers
- 2,049,679
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q4 2025
Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 573,183 | $10.4M | 0.47% | 0 | 13F-HRTimeline |
| Redmile Group, LLCin group Redmile Group, LLC | 441,701 | $7.99M | 0.59% | 0 | 13F-HRTimelineGroup |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 225,940 | $4.09M | <0.01% | +22,502 | 13F-HRTimelineGroup |
| MARSHALL WACE, LLPin group MARSHALL WACE, LLP | 148,632 | $2.69M | <0.01% | +32,836 | 13F-HRTimelineGroup |
| GLOBEFLEX CAPITAL L P | 77,224 | $1.4M | 0.21% | +61,766 | 13F-HRTimeline |
| BlackRock, Inc.in group BlackRock, Inc. | 67,108 | $1.21M | <0.01% | -2,725 | 13F-HRTimelineGroup |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 62,381 | $1.13M | <0.01% | +1,855 | 13F-HRTimelineGroup |
| MACKENZIE FINANCIAL CORP | 58,668 | $1.05M | <0.01% | -5,148 | 13F-HRTimeline |
| ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC | 54,048 | $976K | <0.01% | -2,368 | 13F-HRTimelineGroup |
| STALEY CAPITAL ADVISERS INC | 50,000 | $904K | 0.04% | 0 | 13F-HRTimeline |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 32,691 | $591K | 0.01% | +18,691 | 13F-HRTimeline |
| RENAISSANCE TECHNOLOGIES LLC | 30,040 | $543K | <0.01% | +11,104 | 13F-HRTimeline |
| STATE STREET CORPin group STATE STREET CORP | 26,453 | $479K | <0.01% | +1,200 | 13F-HRTimelineGroup |
| Cambridge Investment Research Advisors,… | 22,864 | $414K | <0.01% | +5,755 | 13F-HRTimeline |
| Quadrature Capital Ltdin group Quadrature Capital Ltd | 20,321 | $368K | <0.01% | +3,779 | 13F-HRTimelineGroup |
| Point72 Asset Management, L.P.in group Point72 Asset Management, L.P. | 18,296 | $331K | <0.01% | new | 13F-HRTimelineGroup |
| FMR LLCin group FMR LLC | 17,156 | $310K | <0.01% | 0 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 15,991 | $289K | <0.01% | -19,947 | 13F-HR/ATimelineGroup |
| CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC | 15,577 | $282K | <0.01% | new | 13F-HRTimelineGroup |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO… | 14,018 | $254K | <0.01% | new | 13F-HRTimelineGroup |
| JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC | 13,990 | $253K | <0.01% | -8,070 | 13F-HRTimelineGroup |
| NORTHERN TRUST CORPin group NORTHERN TRUST CORP | 12,340 | $223K | <0.01% | +1,307 | 13F-HRTimelineGroup |
| Walleye Capital LLCin group Walleye Capital LLC | 12,169 | $220K | <0.01% | new | 13F-HRTimelineGroup |
| Connor, Clark & Lunn Investment Managem… | 10,446 | $189K | <0.01% | new | 13F-HRTimeline |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 10,387 | $188K | <0.01% | +4,542 | 13F-HRTimelineGroup |
| DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP | 10,028 | $181K | <0.01% | new | 13F-HRTimelineGroup |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 1,737 | $31.4K | <0.01% | +1,395 | 13F-HRTimelineGroup |
| SBI Securities Co., Ltd. | 1,404 | $25.4K | <0.01% | 0 | 13F-HRTimeline |
| UBS Group AGin group UBS Group AG | 1,397 | $25.3K | <0.01% | -15,871 | 13F-HRTimelineGroup |
| Private Wealth Asset Management, LLC | 900 | $16.3K | <0.01% | 0 | 13F-HRTimeline |
| ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA | 850 | $15K | <0.01% | -359 | 13F-HRTimelineGroup |
| JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP | 703 | $12.7K | <0.01% | 0 | 13F-HRTimelineGroup |
| WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN | 251 | $4.54K | <0.01% | 0 | 13F-HRTimelineGroup |
| JPMORGAN CHASE & COin group JPMORGAN CHASE & CO | 216 | $3.91K | <0.01% | 0 | 13F-HRTimelineGroup |
| Banque Transatlantique SAin group Banque Transatlantique SA | 176 | $3.18K | <0.01% | 0 | 13F-HR/ATimelineGroup |
| RHUMBLINE ADVISERS | 175 | $3.17K | <0.01% | 0 | 13F-HRTimeline |
| FEDERATED HERMES, INC.in group FEDERATED HERMES, INC. | 130 | $2.35K | <0.01% | new | 13F-HRTimelineGroup |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 46 | $832 | <0.01% | -4 | 13F-HRTimelineGroup |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 10 | $180 | <0.01% | 0 | 13F-HRTimelineGroup |
| Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen… | 8 | $145 | <0.01% | 0 | 13F-HR/ATimelineGroup |
| KERR FINANCIAL PLANNING Corp | 24 | $112 | <0.01% | 0 | 13F-HR/ATimeline |