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Cubist Systematic Strategies’s Rhythm Pharmaceuticals RYTM Stock Holding History

Cubist Systematic Strategies’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
2025
Q3 		– Sell
-64,577
Closed -$4.08M – 3482
2025
Q2 		$4.08M Sell
64,577
-109,245
-63% -$6.69M 0.02% 1143
2025
Q1 		$9.21M Buy
+173,822
New +$9.64M 0.06% 519
2023
Q4 		– Sell
-80,102
Closed -$1.84M – 4039
2023
Q3 		$1.84M Buy
+80,102
New +$1.79M 0.01% 1420
2023
Q2 		– Sell
-278,758
Closed -$4.97M – 4199
2023
Q1 		$4.97M Buy
278,758
+262,250
+1,589% +$6.59M 0.03% 931
2022
Q4 		$481K Sell
16,508
-95,003
-85% -$2.44M ﹤0.01% 3050
2022
Q3 		$2.73M Buy
111,511
+13,420
+14% +$250K 0.02% 1682
2022
Q2 		$407K Buy
+98,091
New +$537K ﹤0.01% 3214
2022
Q1 		– Sell
-14,661
Closed -$146K – 3742
2021
Q4 		$146K Buy
+14,661
New +$165K ﹤0.01% 3115
2020
Q4 		– Sell
-9,694
Closed -$210K – 2691
2020
Q3 		$210K Buy
+9,694
New +$222K ﹤0.01% 2118
2020
Q1 		– Sell
-13,919
Closed -$320K – 2410
2019
Q4 		$320K Buy
13,919
+4,567
+49% +$101K 0.01% 1812
2019
Q3 		$202K Sell
9,352
-3,270
-26% -$70.2K ﹤0.01% 1769
2019
Q2 		$278K Buy
+12,622
New +$319K 0.01% 1860
2018
Q3 		– Sell
-8,735
Closed -$273K – 2052
2018
Q2 		$273K Buy
8,735
+7,559
+643% +$207K 0.01% 1156
2018
Q1 		$23K Sell
1,176
-1,816
-61% -$48.2K ﹤0.01% 1745
2017
Q4 		$87K Buy
+2,992
New +$79.1K ﹤0.01% 1704

Other funds holding RYTM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 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

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

Cubist Systematic Strategies sold out of Rhythm Pharmaceuticals (RYTM) in Q3 2025, closing a stake of 64,577 shares — an estimated $4.08M sold.

Cubist Systematic Strategies first reported a position in RYTM in Q4 2017 and held it in 15 quarters. The position peaked at $9.21M in Q1 2025. 264 funds tracked by Wall St. Rank hold RYTM as of Q3 2025.

  • Cubist Systematic Strategies reported no remaining Rhythm Pharmaceuticals position as of Q3 2025 after selling out during the quarter.
  • Cubist Systematic Strategies sold 64,577 Rhythm Pharmaceuticals shares in Q3 2025, an estimated $4.08M.
  • Cubist Systematic Strategies first reported a position in Rhythm Pharmaceuticals in Q4 2017 and held it in 15 quarters.
  • Cubist Systematic Strategies's Rhythm Pharmaceuticals position peaked at $9.21M in Q1 2025.
  • 264 funds tracked by Wall St. Rank held Rhythm Pharmaceuticals as of Q3 2025.

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