XT
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XTX Topco’s Cullinan Oncology CGEM Stock Holding History

XTX Topco’s Portfolio CGEM Stock Details CGEM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.4M Buy
76,965
+50,641
+192% +$752K 0.02% 1472
2026
Q1 		$374K Sell
26,324
-94,933
-78% -$1.22M 0.01% 2289
2025
Q4 		$1.26M Sell
121,257
-46,722
-28% -$421K 0.03% 865
2025
Q3 		$996K Buy
167,979
+124,884
+290% +$915K 0.05% 578
2025
Q2 		$325K Sell
43,095
-1,398
-3% -$11.2K 0.01% 1375
2025
Q1 		$337K Buy
44,493
+1,094
+3% +$10.5K 0.02% 1315
2024
Q4 		$529K Buy
+43,399
New +$624K 0.04% 729

Other funds holding CGEM

MB
MPM BioImpact Boston, Massachusetts $1.64B AUM 245.64% 1-Year Est. Return
LCM
Lynx1 Capital Management San Juan, Puerto Rico $866M AUM 231.68% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
KCM
Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return

XTX Topco's CGEM Position: Q2 2026 in Review

XTX Topco increased its Cullinan Oncology (CGEM) stake by 192% in Q2 2026, buying an estimated $752K and bringing the position to 76,965 shares worth $1.4M. The position accounts for 0.02% of the portfolio, ranked #1472.

XTX Topco first reported a position in CGEM in Q4 2024 and has held it in 7 quarters since. 183 funds tracked by Wall St. Rank hold CGEM as of Q2 2026.

  • XTX Topco held 76,965 shares of Cullinan Oncology worth $1.4M as of Q2 2026.
  • XTX Topco bought 50,641 Cullinan Oncology shares in Q2 2026, an estimated $752K.
  • Cullinan Oncology made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1472 holding.
  • XTX Topco first reported a position in Cullinan Oncology in Q4 2024 and has held it in 7 quarters since.
  • 183 funds tracked by Wall St. Rank held Cullinan Oncology as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.