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MILLENNIUM MANAGEMENT LLC

Position in ATRA — Atara Biotherapeutics, Inc.

CIK 1273087 NEW YORK, NY

Position in ATRA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$145,566
-$80,002 QoQ
Shares Held
12,680
-73.4% QoQ
Ownership
0.126%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#18
of 36 holders
Holding Since
Mar 2020
21 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 Dec 31, 2020
CallValue
$196,300
CallShares
400
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

MILLENNIUM MANAGEMENT LLC holds $4,631,421,099 across 322 Biotechnology names. ATRA ranks #296 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATRA

Export CSV
22 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $145,566 12,680
2026-03-31 $225,568 47,689
2024-12-31 $134,870 10,133
2024-09-30 $1,431,310 176,053
2024-06-30 $991,703 116,671
2024-03-31 $250,704 361,245
2023-12-31 $1,498,462 2,920,980
2023-09-30 $484,054 327,064
2023-06-30 $2,518,948 1,564,564
2023-03-31 $1,475,505 508,795
2022-12-31 $456,182 139,080
2022-09-30 $511,112 135,215
2022-06-30 $490,785 63,002
2022-03-31 $4,134,802 445,081
2021-12-31 $656,924 41,683
2021-09-30 $1,865,717 104,230
2021-06-30 $5,680,368 365,297
2021-03-31 $6,280,690 437,374
2020-12-31 $196,300 10,000
2020-12-31 $3,118,794 158,879
2020-09-30 $3,932,271 303,416
2020-03-31 $558,553 65,635