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Logos Global Management’s Rhythm Pharmaceuticals RYTM Stock Holding History

Logos Global 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 		$39.1M Buy
450,000
+260,000
+137% +$25.3M 1.95% 14
2025
Q4 		$20.3M Sell
190,000
-10,000
-5% -$1.06M 1.23% 28
2025
Q3 		$20.2M Buy
200,000
+70,000
+54% +$6.5M 1.81% 23
2025
Q2 		$8.21M Buy
+130,000
New +$7.96M 0.91% 35
2023
Q4 		– Sell
-400,000
Closed -$9.17M – 67
2023
Q3 		$9.17M Buy
+400,000
New +$8.96M 1.22% 27

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

Logos Global Management's RYTM Position: Q1 2026 in Review

Logos Global Management increased its Rhythm Pharmaceuticals (RYTM) stake by 137% in Q1 2026, buying an estimated $25.3M and bringing the position to 450,000 shares worth $39.1M. The position accounts for 1.95% of the portfolio, ranked #14.

Logos Global Management first reported a position in RYTM in Q3 2023 and has held it in 5 quarters since. 285 funds tracked by Wall St. Rank hold RYTM as of Q1 2026.

  • Logos Global Management held 450,000 shares of Rhythm Pharmaceuticals worth $39.1M as of Q1 2026.
  • Logos Global Management bought 260,000 Rhythm Pharmaceuticals shares in Q1 2026, an estimated $25.3M.
  • Rhythm Pharmaceuticals made up 1.95% of Logos Global Management's portfolio in Q1 2026, its #14 holding.
  • Logos Global Management first reported a position in Rhythm Pharmaceuticals in Q3 2023 and has held it in 5 quarters since.
  • 285 funds tracked by Wall St. Rank held Rhythm Pharmaceuticals as of Q1 2026.

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