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GROUP ONE TRADING LLC

Position in XFOR — X4 Pharmaceuticals, Inc

CIK 932540 CHICAGO, IL

Position in XFOR

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,325
+$385 QoQ
Shares Held
712
0.0% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#82
of 89 holders
Holding Since
Sep 2021
19 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in XFOR Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $113,693,049 across 200 Biotechnology names. XFOR ranks #144 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in XFOR

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19 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,325 712
2026-03-31 $2,940 712
2025-12-31 $15,992 3,998
2025-09-30 $13,673 3,998
2025-06-30 $7,596 3,998
2025-03-31 $40,617 172,108
2024-12-31 $585,299 797,411
2024-09-30 $83,962 125,504
2024-06-30 $95,263 164,248
2024-03-31 $29,531 21,246
2023-12-31 $59,370 70,764
2023-09-30 $246,733 226,361
2023-06-30 $632,288 325,922
2023-03-31 $26,367 30,308
2022-12-31 $20,038 20,180
2022-09-30 $56,217 32,876
2022-03-31 $29,662 16,950
2021-12-31 $31,487 13,750
2021-09-30 $11,019 2,083