Security key
046513107
Atara Biotherapeutics, Inc. - Common Stock, par value $0.0001 per share (ATRA)
CUSIP: 046513107
Q4 2024 13F Holders as of 31 Dec 2024
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Total 13F shares
- 63
- Total 13F value
- $839
- Share change
- 0
- SEC-reported price per share
- $13.32
- Number of holders
- 2
- Shares outstanding
- 9,606,000
Holder snapshot
3 signals
Security identity
1 source field
Report period
Q4 2024
Institutions
2
Top holders
2
ATRA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2025
Previous quarter: Q3 2024
Atara Biotherapeutics, Inc. SEC filings
Atara Biotherapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 046513107
Recent filing periods:
Ownership snapshot
Top reported holders 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. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
EcoR1 Capital, LLC
Disclosed value leader
EcoR1 Capital, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2024
13F
Lead comparable stake: 5.7%
Showing 1-6 of 15 holder rows.
Quick read
EcoR1 Capital, LLC leads the comparable SEC ownership view at 5.7%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
EcoR1 Capital, LLC
5.7%
Redmile Group, LLC
5.5%
CITADEL ADVISORS LLC
3.2%
BANK OF AMERICA CORP /DE/
2.5%
VANGUARD GROUP INC
2.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC |
13F
Company
|
5.7%
|
$3,812,466
468,938 shares
|
— | 30 Sep 2024 |
| Redmile Group, LLC |
13F
Company
|
5.5%
|
$3,676,955
452,270 shares
|
— | 30 Sep 2024 |
| CITADEL ADVISORS LLC |
13F
Company
|
3.2%
|
$2,117,702
260,480 shares
|
— | 30 Sep 2024 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
2.5%
|
$1,655,488
203,627 shares
|
— | 30 Sep 2024 |
| VANGUARD GROUP INC |
13F
Company
|
2.2%
|
$1,469,213
180,715 shares
|
— | 30 Sep 2024 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
2.1%
|
$1,431,311
176,053 shares
|
— | 30 Sep 2024 |
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 Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
2
Shares
63
Rows available
2
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-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. The marker flags a reported price that did not pass the local price check.
Compare Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
1
Q4 2024 holders
2
Holder diff
1
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend