Jane Street
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Jane Street’s ProKidney PROK Stock Holding History

Jane Street’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
2026
Q1 		$473K Sell
264,285
-229,564
-46% -$487K ﹤0.01% 8183
2025
Q4 		$1.11M Buy
493,849
+424,856
+616% +$1.12M ﹤0.01% 5917
2025
Q3 		$167K Sell
68,993
-522,695
-88% -$1.39M ﹤0.01% 9801
2025
Q2 		$350K Buy
+591,688
New +$461K ﹤0.01% 7571
2024
Q4 		– Sell
-40,530
Closed -$77.8K – 10307
2024
Q3 		$77.8K Sell
40,530
-6,945
-15% -$15.8K ﹤0.01% 9074
2024
Q2 		$117K Sell
47,475
-44,201
-48% -$119K ﹤0.01% 8669
2024
Q1 		$150K Buy
91,676
+28,848
+46% +$42.4K ﹤0.01% 8344
2023
Q4 		$112K Buy
62,828
+41,472
+194% +$88.9K ﹤0.01% 8534
2023
Q3 		$97.8K Sell
21,356
-4,068
-16% -$38.9K ﹤0.01% 7963
2023
Q2 		$284K Sell
25,424
-9,140
-26% -$97.3K ﹤0.01% 7211
2023
Q1 		$391K Buy
+34,564
New +$368K ﹤0.01% 6751
2022
Q3 		– Sell
-150,007
Closed -$1.49M – 10280
2022
Q2 		$1.49M Sell
150,007
-458
-0.3% -$4.53K ﹤0.01% 4710
2022
Q1 		$1.49M Buy
150,465
+263
+0.2% +$2.59K ﹤0.01% 5312
2021
Q4 		$1.49M Buy
150,202
+202
+0.1% +$2K ﹤0.01% 5105
2021
Q3 		$1.47M Hold
150,000
– – ﹤0.01% 5116
2021
Q2 		$1.52M Buy
+150,000
New +$1.52M ﹤0.01% 4908

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
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
BL
Bleichroeder LP New York $579M AUM 94.36% 1-Year Est. Return
AGP
Artia Global Partners Miami, Florida $499M AUM 186.05% 1-Year Est. Return
HWAM
Hennion & Walsh Asset Management Parsippany, New Jersey $3.5B AUM 41.95% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Jane Street's PROK Position: Q1 2026 in Review

Jane Street reduced its ProKidney (PROK) stake by 46% in Q1 2026, selling an estimated $487K and leaving 264,285 shares worth $473K. The position accounts for ﹤0.01% of the portfolio, ranked #8183.

Jane Street first reported a position in PROK in Q2 2021 and has held it in 16 quarters since. The position peaked at $1.52M in Q2 2021. 71 funds tracked by Wall St. Rank hold PROK as of Q1 2026.

  • Jane Street held 264,285 shares of ProKidney worth $473K as of Q1 2026.
  • Jane Street sold 229,564 ProKidney shares in Q1 2026, an estimated $487K.
  • ProKidney made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #8183 holding.
  • Jane Street first reported a position in ProKidney in Q2 2021 and has held it in 16 quarters since.
  • Jane Street's ProKidney position peaked at $1.52M in Q2 2021.
  • 71 funds tracked by Wall St. Rank held ProKidney as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.