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Granahan Investment Management’s Insmed INSM Stock Holding History

Granahan Investment 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
2025
Q4 		– Sell
-13,402
Closed -$1.93M – 165
2025
Q3 		$1.93M Sell
13,402
-102,515
-88% -$12.6M 0.08% 132
2025
Q2 		$11.7M Sell
115,917
-71,885
-38% -$5.5M 0.47% 54
2025
Q1 		$14.3M Sell
187,802
-21,552
-10% -$1.65M 0.71% 45
2024
Q4 		$14.5M Sell
209,354
-7,991
-4% -$576K 0.6% 50
2024
Q3 		$15.9M Sell
217,345
-41,930
-16% -$3.09M 0.62% 43
2024
Q2 		$17.4M Buy
259,275
+125,520
+94% +$4.87M 0.7% 41
2024
Q1 		$3.63M Sell
133,755
-68,438
-34% -$1.92M 0.13% 144
2023
Q4 		$6.27M Sell
202,193
-33,787
-14% -$876K 0.21% 121
2023
Q3 		$5.96M Sell
235,980
-44,697
-16% -$1.02M 0.21% 117
2023
Q2 		$5.92M Buy
280,677
+16,487
+6% +$313K 0.18% 125
2023
Q1 		$4.5M Buy
264,190
+54,233
+26% +$1.05M 0.14% 133
2022
Q4 		$4.19M Buy
+209,957
New +$4.06M 0.13% 139
2022
Q2 		– Sell
-343,877
Closed -$8.08M – 182
2022
Q1 		$8.08M Buy
343,877
+38,214
+13% +$888K 0.2% 104
2021
Q4 		$8.33M Sell
305,663
-1,067
-0.3% -$30.5K 0.17% 123
2021
Q3 		$8.45M Sell
306,730
-105,723
-26% -$2.77M 0.16% 122
2021
Q2 		$11.7M Buy
412,453
+88,994
+28% +$2.64M 0.22% 101
2021
Q1 		$11M Sell
323,459
-24,522
-7% -$937K 0.23% 86
2020
Q4 		$11.6M Sell
347,981
-66,863
-16% -$2.44M 0.26% 82
2020
Q3 		$13.3M Sell
414,844
-58,921
-12% -$1.69M 0.45% 66
2020
Q2 		$13M Buy
473,765
+70,590
+18% +$1.67M 0.47% 62
2020
Q1 		$6.46M Sell
403,175
-180,542
-31% -$4.28M 0.35% 80
2019
Q4 		$13.9M Buy
583,717
+62,748
+12% +$1.28M 0.64% 44
2019
Q3 		$9.19M Buy
520,969
+305,989
+142% +$5.91M 0.51% 57
2019
Q2 		$5.5M Sell
214,980
-13,870
-6% -$386K 0.27% 83
2019
Q1 		$6.65M Buy
+228,850
New +$5.93M 0.36% 74

Other funds holding INSM

JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
DGM
Darwin Global Management St. Helier, Jersey $3.76B AUM 342.13% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

Granahan Investment Management's INSM Position: Q4 2025 in Review

Granahan Investment Management sold out of Insmed (INSM) in Q4 2025, closing a stake of 13,402 shares — an estimated $1.93M sold.

Granahan Investment Management first reported a position in INSM in Q1 2019 and held it in 25 quarters. The position peaked at $17.4M in Q2 2024. 678 funds tracked by Wall St. Rank hold INSM as of Q4 2025.

  • Granahan Investment Management reported no remaining Insmed position as of Q4 2025 after selling out during the quarter.
  • Granahan Investment Management sold 13,402 Insmed shares in Q4 2025, an estimated $1.93M.
  • Granahan Investment Management first reported a position in Insmed in Q1 2019 and held it in 25 quarters.
  • Granahan Investment Management's Insmed position peaked at $17.4M in Q2 2024.
  • 678 funds tracked by Wall St. Rank held Insmed as of Q4 2025.

Based on Granahan Investment Management's 13F filing for Q4 2025, filed 17 Feb 2026.