Jane Street
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Jane Street’s Cullinan Oncology CGEM Stock Holding History

Jane Street’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 		$668K Buy
+36,700
New +$545K ﹤0.01% 7382
2026
Q1 		– Sell
-11,500
Closed -$119K – 11713
2025
Q4 		$119K Sell
11,500
-2,900
-20% -$26.2K ﹤0.01% 10094
2025
Q3 		$85.4K Buy
+14,400
New +$105K ﹤0.01% 10196
2025
Q1 		– Sell
-89,600
Closed -$1.09M – 9533
2024
Q4 		$1.09M Hold
89,600
– – ﹤0.01% 5211
2024
Q3 		$1.5M Buy
+89,600
New +$1.59M ﹤0.01% 5048

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

Jane Street's CGEM Position: Q2 2026 in Review

Jane Street sold out of Cullinan Oncology (CGEM) in Q2 2026, closing a stake of 22,812 shares — an estimated $339K sold.

Jane Street first reported a position in CGEM in Q1 2023 and held it in 13 quarters. The position peaked at $1.93M in Q4 2025. 183 funds tracked by Wall St. Rank hold CGEM as of Q2 2026.

  • Jane Street reported no remaining Cullinan Oncology position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 22,812 Cullinan Oncology shares in Q2 2026, an estimated $339K.
  • Jane Street first reported a position in Cullinan Oncology in Q1 2023 and held it in 13 quarters.
  • Jane Street's Cullinan Oncology position peaked at $1.93M in Q4 2025.
  • 183 funds tracked by Wall St. Rank held Cullinan Oncology as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.