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GROUP ONE TRADING LLC

Position in CTMX — CytomX Therapeutics, Inc.

CIK 932540 CHICAGO, IL

Position in CTMX

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$724,429
+$721,807 QoQ
Shares Held
154,134
+3637.5% QoQ
Ownership
0.071%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2021
17 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in CTMX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $126,528,527 across 209 Biotechnology names. CTMX ranks #32 (0.6% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CTMX

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17 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $724,429 154,134
2025-03-31 $2,622 4,124
2024-12-31 $4,350 4,224
2024-09-30 $5,794 4,911
2024-06-30 $20,696 16,964
2024-03-31 $1,388 637
2023-12-31 $987 637
2023-09-30 $821 637
2023-06-30 $6,252 3,635
2023-03-31 $1,713 1,135
2022-12-31 $313 196
2022-09-30 $284 196
2022-06-30 $358 196
2022-03-31 $1,324 496
2021-12-31 $6,542 1,511
2021-06-30 $11,394 1,800
2021-03-31 $8,503 1,100