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

INSMINSM
14 quarters

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

WESTFIELD CAPITAL MANAGEMENT CO LP holds 1.6M shares of INSM (INSMED INC), worth $173.7M as of 2026-Q2. The position was increased (+11.0% shares). INSM represents 0.6% of WESTFIELD CAPITAL MANAGEMENT CO LP's portfolio.

Current Value

$173.7M

Current Shares

1.6M

Total Value Change

+$145.2M

Total Shares Change

+592,850

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Increased
1.6M
+11.0%
$173.7M0.6%$106.62
48
2026-Q1
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
2021-Q3
Exited
0
-100.0%
$00.0%$26.23
0
2021-Q2
Decreased
967,079
-5.5%
$27.5M0.2%$29.37
0
2021-Q1
Decreased
1M
-20.0%
$34.9M0.2%$32.28
0
2020-Q4
Decreased
1.3M
-4.0%
$42.6M0.3%$33.98
0
2020-Q3
Increased
1.3M
+28.5%
$42.8M0.3%$32.76
44
2020-Q2
New
1M
-
$28.6M0.2%$26.86
48

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

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