Ticker Short Interest
ATRA Short Interest Intelligence
Atara Biotherapeutics Inc positioning pressure, squeeze risk, bearish conviction, crowding, days to cover, and price-positioning divergence.
Neutral
Covering Rally
ATRA is classified as Neutral. Latest reported short interest is 361.5K shares; short interest changed -26.6%, price moved +1.0% since the previous report, short interest is in the 57th percentile, and days to cover is in the 57th percentile. Trend context is constructive.
Reported Short Interest
2026-03-31 to 2026-06-30Days To Cover
liquidity pressureShort Interest Change
report-to-reportPrice Context
2026-03-20 to 2026-06-26Squeeze Radar
44Elevated short interest becomes most interesting when price strength forces shorts to defend or cover.
Bearish Conviction
24Rising short interest alongside weak trend can mean the bearish trade is being reinforced, not trapped.
Crowding
57Latest short interest is 361.5K shares and days to cover is 3.95.
Divergence
0Short interest fell while price rose. The bearish trade appears to be unwinding into strength.
Report History
ATRA Short Interest Ledger
| Settlement | Short interest | Previous | Change | Days cover | Average volume |
|---|---|---|---|---|---|
| 30 Jun 2026 | 361520 | 492405 | -26.6% | 3.95 | 91505 |
| 15 Jun 2026 | 492405 | 484391 | 1.7% | 6.27 | 78554 |
| 29 May 2026 | 484391 | 546470 | -11.4% | 2.91 | 166237 |
| 15 May 2026 | 546470 | 306093 | 78.5% | 1.00 | 7386437 |
| 30 Apr 2026 | 306093 | 317953 | -3.7% | 6.10 | 50142 |
| 15 Apr 2026 | 317953 | 327066 | -2.8% | 4.10 | 77634 |
| 31 Mar 2026 | 327066 | 313290 | 4.4% | 3.01 | 108635 |
Short interest is delayed, reported on a periodic schedule, and may be revised. The dashboard is research context only and does not prove real-time short activity.