Back to 
RA Capital Management, L.P.
RA Capital Management, L.P.
RYTM
Showing 8 of 31 quarters
Position history for RA Capital Management, L.P.'s holdings in Rhythm Pharmaceuticals, Inc.
Yes. RA Capital Management holds 6,666,837 shares of RYTM (Rhythm Pharmaceuticals), worth $740.2M, as of its Q2 2026 13F filing. The share count is unchanged from Q1 2026. RA Capital Management has held RYTM in every 13F on record since Q4 2018, 31 quarterly filings. RYTM is 6.4% of RA Capital Management's reported 13F portfolio.
Current Value
$740.2M
Current Shares
6.7M
Total Value Change
+$421.5M
Total Shares Change
+582,425
Quarter-by-Quarter History