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 		$339K Buy
+3,900
New +$379K ﹤0.01% 8957
2025
Q4 		– Sell
-14,700
Closed -$1.48M – 12206
2025
Q3 		$1.48M Sell
14,700
-38,000
-72% -$3.53M ﹤0.01% 5485
2025
Q2 		$3.33M Buy
+52,700
New +$3.23M ﹤0.01% 3592
2024
Q4 		– Sell
-18,700
Closed -$980K – 10419
2024
Q3 		$980K Sell
18,700
-10,500
-36% -$503K ﹤0.01% 5930
2024
Q2 		$1.2M Sell
29,200
-28,200
-49% -$1.13M ﹤0.01% 5434
2024
Q1 		$2.49M Buy
57,400
+43,400
+310% +$1.9M ﹤0.01% 3746
2023
Q4 		$644K Buy
+14,000
New +$442K ﹤0.01% 6337
2023
Q1 		– Sell
-102,800
Closed -$2.99M – 9804
2022
Q4 		$2.99M Sell
102,800
-22,200
-18% -$570K ﹤0.01% 3229
2022
Q3 		$3.06M Buy
+125,000
New +$2.32M ﹤0.01% 3421

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.