Westfield Capital Management
INSM icon

Westfield Capital Management’s Insmed INSM Stock Holding History

Westfield Capital Management’s Portfolio INSM Stock Details INSM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$240M Buy
1,468,459
+1,035,938
+240% +$159M 1.01% 18
2025
Q4 		$75.3M Sell
432,521
-55,406
-11% -$10.1M 0.31% 105
2025
Q3 		$70.3M Sell
487,927
-851,361
-64% -$104M 0.29% 100
2025
Q2 		$135M Sell
1,339,288
-67,321
-5% -$5.15M 0.57% 41
2025
Q1 		$107M Buy
1,406,609
+468,058
+50% +$35.8M 0.52% 54
2024
Q4 		$64.8M Buy
938,551
+686,812
+273% +$49.5M 0.28% 108
2024
Q3 		$18.4M Buy
+251,739
New +$18.6M 0.08% 184
2021
Q3 		– Sell
-967,079
Closed -$27.5M – 249
2021
Q2 		$27.5M Sell
967,079
-56,133
-5% -$1.67M 0.16% 163
2021
Q1 		$34.9M Sell
1,023,212
-255,464
-20% -$9.76M 0.22% 139
2020
Q4 		$42.6M Sell
1,278,676
-53,812
-4% -$1.97M 0.25% 133
2020
Q3 		$42.8M Buy
1,332,488
+295,777
+29% +$8.5M 0.28% 115
2020
Q2 		$28.6M Buy
+1,036,711
New +$24.6M 0.2% 137

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