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Cubist Systematic Strategies’s ProKidney PROK Stock Holding History

Cubist Systematic Strategies’s Portfolio PROK Stock Details PROK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-176,452
Closed -$104K – 3437
2025
Q2 		$104K Buy
+176,452
New +$137K ﹤0.01% 2706
2024
Q1 		– Sell
-27,395
Closed -$48.8K – 4168
2023
Q4 		$48.8K Sell
27,395
-11,508
-30% -$24.7K ﹤0.01% 3272
2023
Q3 		$178K Buy
+38,903
New +$372K ﹤0.01% 2819

Other funds holding PROK

SCM
Suvretta Capital Management New York $3.92B AUM 86.67% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
BL
Bleichroeder LP New York $579M AUM 94.36% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BU
Brown University Providence, Rhode Island $102M AUM 26.79% 1-Year Est. Return
HWAM
Hennion & Walsh Asset Management Parsippany, New Jersey $3.5B AUM 41.95% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Cubist Systematic Strategies's PROK Position: Q3 2025 in Review

Cubist Systematic Strategies sold out of ProKidney (PROK) in Q3 2025, closing a stake of 176,452 shares — an estimated $104K sold.

Cubist Systematic Strategies first reported a position in PROK in Q3 2023 and held it in 3 quarters. The position peaked at $178K in Q3 2023. 56 funds tracked by Wall St. Rank hold PROK as of Q3 2025.

  • Cubist Systematic Strategies reported no remaining ProKidney position as of Q3 2025 after selling out during the quarter.
  • Cubist Systematic Strategies sold 176,452 ProKidney shares in Q3 2025, an estimated $104K.
  • Cubist Systematic Strategies first reported a position in ProKidney in Q3 2023 and held it in 3 quarters.
  • Cubist Systematic Strategies's ProKidney position peaked at $178K in Q3 2023.
  • 56 funds tracked by Wall St. Rank held ProKidney as of Q3 2025.

Based on Cubist Systematic Strategies's 13F filing for Q3 2025, filed 14 Nov 2025.