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XTX Topco Ltd

Position in ATRA — Atara Biotherapeutics, Inc.

CIK 1828301 LONDON, X0

Position in ATRA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$175,678
+$157,436 QoQ
Shares Held
15,303
+976.2% QoQ
Ownership
0.152%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#16
of 36 holders
Holding Since
Mar 2021
8 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATRA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

XTX Topco Ltd holds $414,894,447 across 381 Biotechnology names. ATRA ranks #244 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATRA

Export CSV
8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $175,678 15,303
2023-12-31 $18,242 35,560
2023-09-30 $50,673 34,239
2023-06-30 $220,314 136,841
2022-12-31 $93,978 28,652
2022-09-30 $629,332 166,490
2022-03-31 $216,289 23,282
2021-03-31 $151,986 10,584