Short Interest Tracker

ATARA BIOTHERAPEUTICS INC (ATRA) Short Interest

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  • โ€ข Borrow Fee
  • โ€ข Share Availability

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  • โ€ข Shares Outstanding

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  • โ€ข Short Interest Ratio
  • โ€ข Trailing Net Short Ratio
  • โ€ข Dilution

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ATARA BIOTHERAPEUTICS INC (ATRA) Short Interest Overview

Latest Market Statistics (Jul 17, 2026)

Share Price
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Shares Outstanding
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Current Borrow Fee
9.19%
Current Shares Available
30K
Net Short Volume
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5-Day Trailing Short Interest
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Latest FINRA Bi-Monthly Data (as of June 30, 2026)

Shares Short
360K
Average Daily Volume
92K
Days to Cover
3.95
Short Interest
4.01%

Short Interest Analysis

ATARA BIOTHERAPEUTICS INC currently has a borrow fee rate of 9.19% with 30K shares available to borrow. The current trailing net short interest is 0.17%. ATRA dilution is 2130%.

As of June 30, 2026, FINRA reported 360K shares sold short, representing 4.01% of outstanding shares. With an average daily trading volume of 91.5K shares, the days to cover ratio was 3.95 days.

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ATARA BIOTHERAPEUTICS INC Stock Cost To Borrow and Availability Recent History

Date Fee Available Short Interest
2026-07-17 9.19% 30K ๐Ÿ”’
2026-07-16 6.41% 45K ๐Ÿ”’
2026-07-15 6.32% 55K ๐Ÿ”’
2026-07-14 5.75% 75K ๐Ÿ”’
2026-07-13 6.46% 85K ๐Ÿ”’
2026-07-10 6.32% 35K ๐Ÿ”’
2026-07-09 5.45% 70K ๐Ÿ”’
2026-07-08 7.13% 85K ๐Ÿ”’
2026-07-07 5.81% 70K ๐Ÿ”’
2026-07-06 7.21% 60K ๐Ÿ”’
2026-07-02 6.98% 100K ๐Ÿ”’
2026-07-01 9.80% 95K ๐Ÿ”’
2026-06-30 6.02% 90K ๐Ÿ”’
2026-06-29 4.96% 100K ๐Ÿ”’
2026-06-26 5.74% 100K ๐Ÿ”’
2026-06-25 6.35% 100K ๐Ÿ”’
2026-06-24 5.46% 100K ๐Ÿ”’
2026-06-23 7.47% 85K ๐Ÿ”’
2026-06-22 7.10% 95K ๐Ÿ”’
2026-06-18 11.82% 50K ๐Ÿ”’
2026-06-17 4.33% 55K ๐Ÿ”’
2026-06-16 4.47% 65K ๐Ÿ”’
2026-06-15 4.32% 100K ๐Ÿ”’
2026-06-12 5.23% 90K ๐Ÿ”’
2026-06-11 5.70% 90K ๐Ÿ”’
2026-06-10 5.27% 100K ๐Ÿ”’
2026-06-09 5.88% 85K ๐Ÿ”’
2026-06-08 6.47% 85K ๐Ÿ”’
2026-06-05 5.87% 95K ๐Ÿ”’
2026-06-04 6.90% 90K ๐Ÿ”’
2026-06-03 7.30% 85K ๐Ÿ”’
2026-06-02 10.37% 90K ๐Ÿ”’
2026-06-01 8.60% 85K ๐Ÿ”’
2026-05-29 7.23% 80K ๐Ÿ”’
2026-05-28 9.47% 55K ๐Ÿ”’
2026-05-27 7.70% 50K ๐Ÿ”’
2026-05-26 11.69% 40K ๐Ÿ”’
2026-05-22 11.82% 35K ๐Ÿ”’
2026-05-21 10.38% 2K ๐Ÿ”’
2026-05-20 7.56% 40K ๐Ÿ”’
2026-05-19 7.37% 40K ๐Ÿ”’
2026-05-18 8.55% 65K ๐Ÿ”’
2026-05-15 8.58% 80K ๐Ÿ”’
2026-05-14 11.81% 40K ๐Ÿ”’
2026-05-13 12.17% 20K ๐Ÿ”’
2026-05-12 6.64% 70K ๐Ÿ”’
2026-05-11 4.67% 100K ๐Ÿ”’
2026-05-08 24.12% 10K ๐Ÿ”’
2026-05-07 4.22% 85K ๐Ÿ”’
2026-05-06 3.33% 200K ๐Ÿ”’
Date Time Fee Available
2026-07-17 1829 9.19% 30K
2026-07-17 1829 9.19% 30K
2026-07-17 1813 9.19% 30K
2026-07-17 1757 9.19% 30K
2026-07-17 1742 9.19% 30K
2026-07-17 1726 9.19% 30K
2026-07-17 1710 9.19% 30K
2026-07-17 1655 9.19% 30K
2026-07-17 1639 9.19% 30K
2026-07-17 1623 9.19% 30K
2026-07-17 1608 9.19% 30K
2026-07-17 1552 9.19% 30K
2026-07-17 1537 9.19% 30K
2026-07-17 1521 9.19% 30K
2026-07-17 1505 9.19% 30K
2026-07-17 1450 9.19% 30K
2026-07-17 1434 9.19% 30K
2026-07-17 1419 9.19% 30K
2026-07-17 1403 9.19% 30K
2026-07-17 1347 9.19% 30K
2026-07-17 1332 9.19% 30K
2026-07-17 1316 9.19% 30K
2026-07-17 1300 9.19% 30K
2026-07-17 1245 9.19% 30K
2026-07-17 1229 9.19% 30K
2026-07-17 1214 10.55% 30K
2026-07-17 1214 10.55% 30K
2026-07-17 1158 10.55% 30K
2026-07-17 1142 10.55% 30K
2026-07-17 1127 10.55% 30K
2026-07-17 1111 10.67% 30K
2026-07-17 1056 10.67% 30K
2026-07-17 1040 10.67% 30K
2026-07-17 1024 10.67% 30K
2026-07-17 1009 10.67% 30K
2026-07-17 953 10.67% 30K
2026-07-17 937 10.67% 30K
2026-07-17 922 10.67% 40K
2026-07-17 906 6.41% 40K
2026-07-17 851 6.41% 40K
2026-07-17 835 6.41% 40K
2026-07-17 819 6.41% 40K
2026-07-17 804 6.41% 40K
2026-07-17 748 6.41% 40K
2026-07-17 732 6.41% 10K
2026-07-17 717 6.41% 10K
2026-07-17 701 6.41% 45K
2026-07-17 646 6.41% 45K
2026-07-16 1829 6.41% 45K
2026-07-16 1813 6.41% 45K