Back to WESTFIELD CAPITAL MANAGEMENT CO LP

INSM
7 quarters

Position history for WESTFIELD CAPITAL MANAGEMENT CO LP's holdings in INSMED INC

WESTFIELD CAPITAL MANAGEMENT CO LP holds 1.5M shares of INSM (INSMED INC), worth $240.1M as of 2026-Q1. The position was increased (+239.5% shares). INSM represents 1.0% of WESTFIELD CAPITAL MANAGEMENT CO LP's portfolio.

Current Value

$240.1M

Current Shares

1.5M

Total Value Change

+$221.7M

Total Shares Change

+1.2M

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Increased
1.5M
+239.5%
$240.1M1.0%$147.00
78
2025-Q4
Decreased
432,521
-11.4%
$75.3M0.3%$174.09
0
2025-Q3
Decreased
487,927
-63.6%
$70.3M0.3%$141.65
0
2025-Q2
Decreased
1.3M
-4.8%
$134.8M0.6%$99.49
0
2025-Q1
Increased
1.4M
+49.9%
$107.3M0.5%$77.99
58
2024-Q4
Increased
938,551
+272.8%
$64.8M0.3%$68.87
57
2024-Q3
New
251,739
-
$18.4M0.1%$72.48
39

Other major holders of INSM: JPMORGAN CHASE & CO, VANGUARD GROUP INC

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