ATRA
Atara Biotherapeutics, Inc.Company with tickers: ATRA
CIK
1604464
CUSIP
046513206
Shares Outstanding
9,010,172
13F Activity (30d)
30 filings
30 filers
Price
$9.66
Market Cap
$88.30M
P/E Ratio
3.76
EPS (Diluted)
$2.57
52W High
$19.15
52W Low
$3.92
Price History
Institutional Holders
Short Volume
Short Interest
Fails to Deliver
Financials
SEC Filings
Earnings Calls
Insider Trades
Congressional Trades
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-04-30 | 306,093 | 317,953 | -11,860 | 6.10 |
| 2026-04-15 | 317,953 | 327,066 | -9,113 | 4.10 |
| 2026-03-31 | 327,066 | 313,290 | +13,776 | 3.01 |
| 2026-03-13 | 313,290 | 330,524 | -17,234 | 1.00 |
| 2026-02-27 | 330,524 | 209,287 | +121,237 | 2.13 |
| 2026-02-13 | 209,287 | 282,525 | -73,238 | 2.40 |
| 2026-01-30 | 282,525 | 1,016,616 | -734,091 | 1.00 |
| 2026-01-15 | 1,016,616 | 169,201 | +847,415 | 1.00 |
| 2025-12-31 | 169,201 | 166,856 | +2,345 | 2.56 |
| 2025-12-15 | 166,856 | 164,713 | +2,143 | 2.01 |
| 2025-11-28 | 164,713 | 176,777 | -12,064 | 2.79 |
| 2025-11-14 | 176,777 | 168,549 | +8,228 | 2.37 |
| 2025-10-31 | 168,549 | 128,849 | +39,700 | 3.72 |
| 2025-10-15 | 128,849 | 149,590 | -20,741 | 2.11 |
| 2025-09-30 | 149,590 | 161,507 | -11,917 | 2.51 |
| 2025-09-15 | 161,507 | 173,825 | -12,318 | 3.51 |
| 2025-08-29 | 173,825 | 196,215 | -22,390 | 3.16 |
| 2025-08-15 | 196,215 | 210,641 | -14,426 | 4.39 |
| 2025-07-31 | 210,641 | 268,036 | -57,395 | 2.45 |
| 2025-07-15 | 268,036 | 266,647 | +1,389 | 7.64 |
| 2025-06-30 | 266,647 | 285,774 | -19,127 | 7.21 |
| 2025-06-13 | 285,774 | 367,405 | -81,631 | 4.82 |
| 2025-05-30 | 367,405 | 412,857 | -45,452 | 4.80 |
| 2025-05-15 | 412,857 | 522,139 | -109,282 | 5.75 |