CM
RYTM icon

Caption Management’s Rhythm Pharmaceuticals RYTM Stock Holding History

Caption Management’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
-4,614
Closed -$494K – 2003
2025
Q4 		$494K Buy
+4,614
New +$489K ﹤0.01% 1247
2025
Q3 		– Sell
-7,540
Closed -$700K – 1993
2025
Q2 		$476K Buy
+7,540
New +$462K 0.01% 1122
2024
Q3 		– Sell
-44,984
Closed -$2.16M – 1558
2024
Q2 		$1.85M Buy
+44,984
New +$1.8M 0.03% 501

Other funds holding RYTM

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return

Caption Management's RYTM Position: Q1 2026 in Review

Caption Management sold out of Rhythm Pharmaceuticals (RYTM) in Q1 2026, closing a stake of 4,614 shares — an estimated $494K sold.

Caption Management first reported a position in RYTM in Q2 2024 and held it in 3 quarters. The position peaked at $1.85M in Q2 2024. 285 funds tracked by Wall St. Rank hold RYTM as of Q1 2026.

  • Caption Management reported no remaining Rhythm Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Caption Management sold 4,614 Rhythm Pharmaceuticals shares in Q1 2026, an estimated $494K.
  • Caption Management first reported a position in Rhythm Pharmaceuticals in Q2 2024 and held it in 3 quarters.
  • Caption Management's Rhythm Pharmaceuticals position peaked at $1.85M in Q2 2024.
  • 285 funds tracked by Wall St. Rank held Rhythm Pharmaceuticals as of Q1 2026.

Based on Caption Management's 13F filing for Q1 2026, filed 15 May 2026.