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
Q1 		$507K Buy
107,800
+8,800
+9% +$44.7K ﹤0.01% 3250
2025
Q4 		$422K Sell
99,000
-232,900
-70% -$885K ﹤0.01% 3474
2025
Q3 		$1.06M Sell
331,900
-34,900
-10% -$78.6K ﹤0.01% 2984
2025
Q2 		$832K Buy
366,800
+365,200
+22,825% +$589K ﹤0.01% 2968
2025
Q1 		$1K Sell
1,600
-21,900
-93% -$17K ﹤0.01% 8178
2024
Q4 		$24K Buy
23,500
+18,000
+327% +$19.4K ﹤0.01% 6524
2024
Q3 		$6K Buy
+5,500
New +$6.99K ﹤0.01% 7495
2024
Q2 		– Sell
-900
Closed -$1K – 8932
2024
Q1 		$1K Buy
+900
New +$1.66K ﹤0.01% 8547
2023
Q4 		– Sell
-1,100
Closed -$1K – 8933
2023
Q3 		$1K Sell
1,100
-800
-42% -$1.26K ﹤0.01% 8273
2023
Q2 		$3K Sell
1,900
-52,700
-97% -$87.5K ﹤0.01% 8201
2023
Q1 		$82K Buy
54,600
+49,700
+1,014% +$112K ﹤0.01% 5377
2022
Q4 		$7K Buy
4,900
+600
+14% +$888 ﹤0.01% 7806
2022
Q3 		$6K Sell
4,300
-1,400
-25% -$2.15K ﹤0.01% 8626
2022
Q2 		$10K Sell
5,700
-1,100
-16% -$2.11K ﹤0.01% 8273
2022
Q1 		$18K Buy
6,800
+1,300
+24% +$4.99K ﹤0.01% 8347
2021
Q4 		$23K Buy
5,500
+4,900
+817% +$28.7K ﹤0.01% 8187
2021
Q3 		$3K Hold
600
– – ﹤0.01% 9409
2021
Q2 		$3K Buy
600
+227
+61% +$1.77K ﹤0.01% 9595
2021
Q1 		$288K Buy
+373
New +$2.95K ﹤0.01% 4192
2018
Q2 		– Sell
-10
Closed -$6K – 7429
2018
Q1 		$6K Buy
+10
New +$285 ﹤0.01% 4452
2017
Q4 		– Sell
-2
Closed -$1K – 6078
2017
Q3 		$1K Buy
+2
New +$31 ﹤0.01% 5382

Other funds holding CTMX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
KCM
Kynam Capital Management Princeton, New Jersey $1.62B AUM 138.67% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
VA
VR Adviser New York $2.68B AUM 422.73% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Simplex Trading's CTMX Position: Q1 2026 in Review

Simplex Trading increased its CytomX Therapeutics (CTMX) stake by 933% in Q1 2026, buying an estimated $1.14M and bringing the position to 248,438 shares worth $1.17M. The position accounts for ﹤0.01% of the portfolio, ranked #2330.

Simplex Trading first reported a position in CTMX in Q3 2017 and has held it in 17 quarters since. 179 funds tracked by Wall St. Rank hold CTMX as of Q1 2026.

  • Simplex Trading held 248,438 shares of CytomX Therapeutics worth $1.17M as of Q1 2026.
  • Simplex Trading bought 224,387 CytomX Therapeutics shares in Q1 2026, an estimated $1.14M.
  • CytomX Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2330 holding.
  • Simplex Trading first reported a position in CytomX Therapeutics in Q3 2017 and has held it in 17 quarters since.
  • 179 funds tracked by Wall St. Rank held CytomX Therapeutics as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.