Security key
046513206
Atara Biotherapeutics, Inc. - Common Stock (ATRA)
CUSIP: 046513206
Q2 2024 13F Holders as of 30 Jun 2024
- Security type / class
- Equity / Common Stock
- Shares outstanding
- 8,191,888
- Total 13F shares
- 2,653,675
- Share change
- +2,615,024
- Total reported value
- $22,554,322
- Put/Call ratio
- 40%
- Reported price per share
- $8.50
- Number of holders
- 43
- Value change
- +$22,225,788
- Number of buys
- 41
Security identity
Holder snapshot
Report period
Q2 2024
Institutions
43
Top holders
10
ATRA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2024
Atara Biotherapeutics, Inc. SEC filings
Atara Biotherapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 046513206
Recent filing periods:
Ownership snapshot
Top reported holders of ATRA - Atara Biotherapeutics, Inc. - Common Stock (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
EcoR1 Capital, LLC
13D/G signal
—
Evidence rows
15
Latest as of
31 Mar 2024
13F
Lead comparable stake: 106%
Showing 1-6 of 15 holder rows.
Rank 1 holder
EcoR1 Capital, LLC
13F
- Ownership
- 106%
- Position
- $7.06M
Rank 2 holder
Redmile Group, LLC
13F
- Ownership
- 96%
- Position
- $6.43M
Rank 3 holder
BlackRock Finance, Inc.
13F
- Ownership
- 71%
- Position
- $4.74M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC |
13F
Company
|
106%
|
$7,055,928
10,167,043 shares
|
— | 31 Mar 2024 |
| Redmile Group, LLC |
13F
Company
|
96%
|
$6,428,736
9,263,309 shares
|
— | 31 Mar 2024 |
| BlackRock Finance, Inc. |
13F
Company
|
71%
|
$4,741,047
6,831,479 shares
|
— | 31 Mar 2024 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
69%
|
$4,566,920
6,580,577 shares
|
— | 31 Mar 2024 |
| CITADEL ADVISORS LLC |
13F
Company
|
68%
|
$4,519,372
6,512,063 shares
|
— | 31 Mar 2024 |
| VANGUARD GROUP INC |
13F
Company
|
52%
|
$3,478,979
5,012,938 shares
|
— | 31 Mar 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 Q2 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
43
Shares
2,653,675
Rows available
43
| 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. The marker flags a reported price that failed the local validity check.
Compare Q2 2024 vs Q4 2025 Across Filers
Q4 2025 holders
40
Q2 2024 holders
43
Holder diff
3
| Investor | Q4 2025 Shares | Q2 2024 Shares | Share Diff | Share Chg % | Q4 2025 value | Q2 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend