BFM
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Boothbay Fund Management’s Insmed INSM Stock Holding History

Boothbay Fund 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 		– Sell
-2,800
Closed -$487K – 2264
2025
Q4 		$487K Sell
2,800
-33,600
-92% -$6.13M 0.01% 1155
2025
Q3 		$5.24M Buy
+36,400
New +$4.46M 0.08% 306
2025
Q1 		– Sell
-136,700
Closed -$9.44M – 1576
2024
Q4 		$9.44M Sell
136,700
-128,000
-48% -$9.22M 0.23% 112
2024
Q3 		$19.3M Buy
264,700
+115,500
+77% +$8.52M 0.44% 24
2024
Q2 		$10M Buy
149,200
+10,000
+7% +$388K 0.24% 72
2024
Q1 		$3.78M Buy
+139,200
New +$3.9M 0.07% 318
2023
Q3 		– Sell
-40,700
Closed -$859K – 1891
2023
Q2 		$859K Hold
40,700
– – 0.02% 892
2023
Q1 		$694K Buy
+40,700
New +$791K 0.01% 1146
2022
Q4 		– Sell
-17,300
Closed -$373K – 2198
2022
Q3 		$373K Buy
+17,300
New +$415K 0.01% 1392
2020
Q2 		– Sell
-324
Closed -$519K – 1036
2020
Q1 		$519K Buy
324
+217
+203% +$5.14K 0.04% 455
2019
Q4 		$256K Sell
107
-277
-72% -$5.63K 0.02% 633
2019
Q3 		$677K Buy
+384
New +$7.42K 0.06% 395
2019
Q1 		– Sell
-583
Closed -$765K – 809
2018
Q4 		$765K Hold
583
– – 0.11% 188
2018
Q3 		$1.18M Hold
583
– – 0.12% 169
2018
Q2 		$1.38M Hold
583
– – 0.12% 137
2018
Q1 		$1.31M Buy
+583
New +$15.3K 0.16% 136

Other funds holding INSM

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
DGM
Darwin Global Management St. Helier, Jersey $3.76B AUM 342.13% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
OAG
Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return

Boothbay Fund Management's INSM Position: Q2 2026 in Review

Boothbay Fund Management opened a new position in Insmed (INSM) in Q2 2026: 47,266 shares worth $5.04M. The stake represents 0.07% of the portfolio and ranks #349 among its holdings. This is a return to the name: Boothbay Fund Management previously reported a position in INSM as recently as Q4 2025.

Boothbay Fund Management first reported a position in INSM in Q3 2017 and has held it in 18 quarters since. The position peaked at $5.31M in Q2 2025. 665 funds tracked by Wall St. Rank hold INSM as of Q2 2026.

  • Boothbay Fund Management held 47,266 shares of Insmed worth $5.04M as of Q2 2026.
  • Insmed was a new Boothbay Fund Management position in Q2 2026.
  • Insmed made up 0.07% of Boothbay Fund Management's portfolio in Q2 2026, its #349 holding.
  • Boothbay Fund Management first reported a position in Insmed in Q3 2017 and has held it in 18 quarters since.
  • Boothbay Fund Management's Insmed position peaked at $5.31M in Q2 2025.
  • 665 funds tracked by Wall St. Rank held Insmed as of Q2 2026.

Based on Boothbay Fund Management's 13F filing for Q2 2026, filed 14 Aug 2026.