Back to WESTFIELD CAPITAL MANAGEMENT CO LP WESTFIELD CAPITAL MANAGEMENT CO LP

RYTMRYTM
6 quarters

Position history for WESTFIELD CAPITAL MANAGEMENT CO LPWESTFIELD CAPITAL MANAGEMENT CO LP's holdings in RHYTHM PHARMACEUTICALS INC

WESTFIELD CAPITAL MANAGEMENT CO LP holds 2.2M shares of RYTM (RHYTHM PHARMACEUTICALS INC), worth $245.2M as of 2026-Q2. The position was increased (+14.5% shares). RYTM represents 0.8% of WESTFIELD CAPITAL MANAGEMENT CO LP's portfolio.

Current Value

$245.2M

Current Shares

2.2M

Total Value Change

+$174.2M

Total Shares Change

+867,503

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Increased
2.2M
+14.5%
$245.2M0.8%$111.03
49
2026-Q1
Increased
1.9M
+52.2%
$167.8M0.7%$89.56
60
2025-Q4
Increased
1.3M
+18.5%
$135.6M0.6%$106.76
50
2025-Q3
Decreased
1.1M
-34.4%
$108M0.5%$100.64
0
2025-Q2
Increased
1.6M
+21.5%
$103M0.4%$62.73
43
2025-Q1
New
1.3M
-
$71M0.3%$54.80
49

Other major holders of RYTM: RA CAPITAL MANAGEMENT, L.P., BlackRock, Inc., VANGUARD GROUP INC

Analytics tracking helps us improve the product. Essential functions stay on either way. How analytics data is used