Simplex Trading
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Simplex Trading’s CytomX Therapeutics CTMX Stock Holding History

Simplex Trading’s Portfolio CTMX Stock Details CTMX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$38.6K Sell
10,286
-238,152
-96% -$909K ﹤0.01% 6542
2026
Q1 		$1.17M Buy
248,438
+224,387
+933% +$1.14M ﹤0.01% 2330
2025
Q4 		$102K Buy
+24,051
New +$91.4K ﹤0.01% 4976
2025
Q2 		– Sell
-33,853
Closed -$54.6K – 8802
2025
Q1 		$21K Buy
33,853
+33,346
+6,577% +$25.9K ﹤0.01% 6532
2024
Q4 		$0 Buy
+507
New +$545 ﹤0.01% 8669
2024
Q3 		– Sell
-3,891
Closed -$4.94K – 8645
2024
Q2 		$4K Sell
3,891
-2,173
-36% -$4.33K ﹤0.01% 7967
2024
Q1 		$13K Buy
+6,064
New +$11.2K ﹤0.01% 7407
2023
Q3 		– Sell
-709
Closed -$1.12K – 8817
2023
Q2 		$1K Buy
+709
New +$1.18K ﹤0.01% 8591
2022
Q3 		– Sell
-14
Closed -$22 – 10037
2022
Q2 		$0 Hold
14
– – ﹤0.01% 10111
2022
Q1 		$0 Buy
+14
New +$54 ﹤0.01% 10528
2021
Q4 		– Sell
-6,168
Closed -$36.1K – 10596
2021
Q3 		$39K Hold
6,168
– – ﹤0.01% 7812
2021
Q2 		$39K Buy
+6,168
New +$48K ﹤0.01% 7938
2020
Q3 		– Sell
-258
Closed -$2K – 7873
2020
Q2 		$2K Sell
258
-107
-29% -$994 ﹤0.01% 7232
2020
Q1 		$2K Sell
365
-16,129
-98% -$112K ﹤0.01% 7165
2019
Q4 		$137K Buy
+16,494
New +$111K ﹤0.01% 4156
2019
Q2 		– Sell
-144
Closed -$1K – 7202
2019
Q1 		$1K Buy
+144
New +$2.13K ﹤0.01% 6883
2018
Q2 		– Sell
-89
Closed -$2K – 7430
2018
Q1 		$2K Buy
+89
New +$2.54K ﹤0.01% 5219
2017
Q4 		– Sell
-290
Closed -$5K – 6079
2017
Q3 		$5K Buy
+290
New +$4.53K ﹤0.01% 4363

Other funds holding CTMX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
KCM
Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
VA
VR Adviser New York $3.3B AUM 525.74% 1-Year Est. Return

Simplex Trading's CTMX Position: Q2 2026 in Review

Simplex Trading reduced its CytomX Therapeutics (CTMX) stake by 96% in Q2 2026, selling an estimated $909K and leaving 10,286 shares worth $38.6K. The position accounts for ﹤0.01% of the portfolio, ranked #6542.

Simplex Trading first reported a position in CTMX in Q3 2017 and has held it in 18 quarters since. The position peaked at $1.17M in Q1 2026. 179 funds tracked by Wall St. Rank hold CTMX as of Q2 2026.

  • Simplex Trading held 10,286 shares of CytomX Therapeutics worth $38.6K as of Q2 2026.
  • Simplex Trading sold 238,152 CytomX Therapeutics shares in Q2 2026, an estimated $909K.
  • CytomX Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #6542 holding.
  • Simplex Trading first reported a position in CytomX Therapeutics in Q3 2017 and has held it in 18 quarters since.
  • Simplex Trading's CytomX Therapeutics position peaked at $1.17M in Q1 2026.
  • 179 funds tracked by Wall St. Rank held CytomX Therapeutics as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.