Jane Street
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Jane Street’s Rhythm Pharmaceuticals RYTM Stock Holding History

Jane Street’s Portfolio RYTM Stock Details RYTM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-1,960
Closed -$191K – 12816
2025
Q4 		$210K Sell
1,960
-1,008
-34% -$107K ﹤0.01% 9625
2025
Q3 		$300K Buy
+2,968
New +$276K ﹤0.01% 8899
2025
Q2 		– Sell
-91,118
Closed -$5.58M – 10726
2025
Q1 		$4.83M Buy
91,118
+32,703
+56% +$1.81M ﹤0.01% 2988
2024
Q4 		$3.27M Sell
58,415
-50,771
-46% -$2.8M ﹤0.01% 3307
2024
Q3 		$5.72M Sell
109,186
-37,314
-25% -$1.79M ﹤0.01% 2644
2024
Q2 		$6.02M Buy
146,500
+120,182
+457% +$4.8M ﹤0.01% 2704
2024
Q1 		$1.14M Sell
26,318
-158,041
-86% -$6.92M ﹤0.01% 5159
2023
Q4 		$8.47M Buy
184,359
+40,357
+28% +$1.27M ﹤0.01% 2152
2023
Q3 		$3.3M Buy
144,002
+67,978
+89% +$1.52M ﹤0.01% 3219
2023
Q2 		$1.25M Sell
76,024
-273,615
-78% -$4.94M ﹤0.01% 4856
2023
Q1 		$6.24M Buy
349,639
+150,136
+75% +$3.77M ﹤0.01% 2157
2022
Q4 		$5.81M Buy
+199,503
New +$5.13M ﹤0.01% 2283
2022
Q2 		– Sell
-18,923
Closed -$218K – 10713
2022
Q1 		$218K Buy
+18,923
New +$166K ﹤0.01% 8912
2021
Q2 		– Sell
-11,770
Closed -$251K – 10320
2021
Q1 		$251K Buy
11,770
+2,932
+33% +$85K ﹤0.01% 7945
2020
Q4 		$263K Buy
+8,838
New +$225K ﹤0.01% 6593
2020
Q3 		– Sell
-9,505
Closed -$212K – 7821
2020
Q2 		$212K Sell
9,505
-2,516
-21% -$49K ﹤0.01% 6304
2020
Q1 		$183K Buy
+12,021
New +$215K ﹤0.01% 4691
2018
Q3 		– Sell
-12,056
Closed -$377K – 5629
2018
Q2 		$377K Buy
+12,056
New +$330K ﹤0.01% 3895

Other funds holding RYTM

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

Jane Street's RYTM Position: Q1 2026 in Review

Jane Street sold out of Rhythm Pharmaceuticals (RYTM) in Q1 2026, closing a stake of 1,960 shares — an estimated $191K sold.

Jane Street first reported a position in RYTM in Q2 2018 and held it in 18 quarters. The position peaked at $8.47M in Q4 2023. 285 funds tracked by Wall St. Rank hold RYTM as of Q1 2026.

  • Jane Street reported no remaining Rhythm Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 1,960 Rhythm Pharmaceuticals shares in Q1 2026, an estimated $191K.
  • Jane Street first reported a position in Rhythm Pharmaceuticals in Q2 2018 and held it in 18 quarters.
  • Jane Street's Rhythm Pharmaceuticals position peaked at $8.47M in Q4 2023.
  • 285 funds tracked by Wall St. Rank held Rhythm Pharmaceuticals as of Q1 2026.

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