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 		$4.04M Sell
46,500
-91,200
-66% -$8.87M ﹤0.01% 3832
2025
Q4 		$14.7M Buy
137,700
+64,700
+89% +$6.86M ﹤0.01% 1885
2025
Q3 		$7.37M Buy
73,000
+3,400
+5% +$316K ﹤0.01% 2841
2025
Q2 		$4.4M Sell
69,600
-100,500
-59% -$6.15M ﹤0.01% 3174
2025
Q1 		$9.01M Buy
170,100
+72,100
+74% +$4M ﹤0.01% 2133
2024
Q4 		$5.49M Sell
98,000
-88,300
-47% -$4.88M ﹤0.01% 2540
2024
Q3 		$9.76M Buy
186,300
+103,600
+125% +$4.96M ﹤0.01% 1934
2024
Q2 		$3.4M Sell
82,700
-9,300
-10% -$371K ﹤0.01% 3597
2024
Q1 		$3.99M Sell
92,000
-129,000
-58% -$5.65M ﹤0.01% 2964
2023
Q4 		$10.2M Buy
221,000
+60,000
+37% +$1.89M ﹤0.01% 1934
2023
Q3 		$3.69M Buy
161,000
+134,500
+508% +$3.01M ﹤0.01% 3057
2023
Q2 		$437K Buy
26,500
+2,300
+10% +$41.5K ﹤0.01% 6522
2023
Q1 		$432K Sell
24,200
-59,800
-71% -$1.5M ﹤0.01% 6562
2022
Q4 		$2.45M Sell
84,000
-209,500
-71% -$5.38M ﹤0.01% 3540
2022
Q3 		$7.19M Buy
+293,500
New +$5.46M ﹤0.01% 2087

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.