Wellington Management Group
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Wellington Management Group’s CytomX Therapeutics CTMX Stock Holding History

Wellington Management Group’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 		$16.8M Buy
+3,582,985
New +$18.2M ﹤0.01% 1079
2020
Q1 		– Sell
-130,332
Closed -$1.08M – 1937
2019
Q4 		$1.08M Sell
130,332
-4,069,019
-97% -$27.5M ﹤0.01% 1687
2019
Q3 		$31M Buy
4,199,351
+878,794
+26% +$8.67M 0.01% 852
2019
Q2 		$37.3M Buy
3,320,557
+22,782
+0.7% +$239K 0.01% 843
2019
Q1 		$35.5M Buy
3,297,775
+620,117
+23% +$9.17M 0.01% 854
2018
Q4 		$40.4M Buy
2,677,658
+2,150,556
+408% +$31.9M 0.01% 777
2018
Q3 		$9.75M Buy
527,102
+132,110
+33% +$3.01M ﹤0.01% 1287
2018
Q2 		$9.03M Sell
394,992
-24,360
-6% -$622K ﹤0.01% 1316
2018
Q1 		$11.9M Buy
419,352
+367,302
+706% +$10.5M ﹤0.01% 1229
2017
Q4 		$1.1M Buy
52,050
+5,674
+12% +$118K ﹤0.01% 1877
2017
Q3 		$842K Buy
46,376
+30,331
+189% +$473K ﹤0.01% 1931
2017
Q2 		$249K Buy
+16,045
New +$242K ﹤0.01% 2146
2016
Q2 		– Sell
-749,055
Closed -$9.66M – 2103
2016
Q1 		$9.66M Hold
749,055
– – ﹤0.01% 1152
2015
Q4 		$15.6M Buy
+749,055
New +$11.9M ﹤0.01% 1038

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

Wellington Management Group's CTMX Position: Q1 2026 in Review

Wellington Management Group opened a new position in CytomX Therapeutics (CTMX) in Q1 2026: 3,582,985 shares worth $16.8M. The stake represents ﹤0.01% of the portfolio and ranks #1079 among its holdings. This is a return to the name: Wellington Management Group previously reported a position in CTMX as recently as Q4 2019.

Wellington Management Group first reported a position in CTMX in Q4 2015 and has held it in 14 quarters since. The position peaked at $40.4M in Q4 2018. 179 funds tracked by Wall St. Rank hold CTMX as of Q1 2026.

  • Wellington Management Group held 3,582,985 shares of CytomX Therapeutics worth $16.8M as of Q1 2026.
  • CytomX Therapeutics was a new Wellington Management Group position in Q1 2026.
  • CytomX Therapeutics made up ﹤0.01% of Wellington Management Group's portfolio in Q1 2026, its #1079 holding.
  • Wellington Management Group first reported a position in CytomX Therapeutics in Q4 2015 and has held it in 14 quarters since.
  • Wellington Management Group's CytomX Therapeutics position peaked at $40.4M in Q4 2018.
  • 179 funds tracked by Wall St. Rank held CytomX Therapeutics as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.