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JANE STREET GROUP, LLC

Position in ATRA — Atara Biotherapeutics, Inc.

CIK 1595888 NEW YORK, NY

Position in ATRA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$348,360
+$188,156 QoQ
Shares Held
30,345
-10.4% QoQ
Ownership
0.302%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#12
of 36 holders
Holding Since
Jun 2020
20 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATRA Over Time

Shares Held

Position Value (USD)

Derivatives in ATRA

reported options exposure · as of Mar 31, 2022
CallValue
$184,871
CallShares
796
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $1,372,940,661 across 293 Biotechnology names. ATRA ranks #140 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATRA

Export CSV
24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $348,360 30,345
2026-03-31 $160,204 33,870
2025-12-31 $253,078 13,990
2025-09-30 $316,119 22,060
2024-03-31 $43,479 62,651
2023-12-31 $67,805 132,177
2023-09-30 $34,637 23,404
2023-06-30 $711,250 441,771
2023-03-31 $52,945 18,257
2022-12-31 $485,462 148,007
2022-09-30 $294,514 77,914
2022-06-30 $195,886 25,146
2022-03-31 $184,871 19,900
2021-12-31 $207,590 13,172
2021-12-31 $327,808 20,800
2021-09-30 $182,580 10,200
2021-09-30 $423,764 23,674
2021-06-30 $229,828 14,780
2021-03-31 $314,411 21,895
2020-12-31 $598,282 30,478
2020-12-31 $284,635 14,500
2020-12-31 $280,709 14,300
2020-09-30 $1,401,351 108,129
2020-06-30 $247,893 17,014