CP
INSM icon

CenterBook Partners’s Insmed INSM Stock Holding History

CenterBook Partners’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
Q2 		$11M Buy
103,151
+67,919
+193% +$8.22M 0.54% 33
2026
Q1 		$5.76M Buy
+35,232
New +$5.42M 0.31% 90
2025
Q2 		– Sell
-15,991
Closed -$1.22M – 551
2025
Q1 		$1.22M Buy
15,991
+6,600
+70% +$505K 0.08% 285
2024
Q4 		$648K Sell
9,391
-71,945
-88% -$5.18M 0.04% 389
2024
Q3 		$5.94M Buy
+81,336
New +$6M 0.37% 82

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

CenterBook Partners's INSM Position: Q2 2026 in Review

CenterBook Partners increased its Insmed (INSM) stake by 193% in Q2 2026, buying an estimated $8.22M and bringing the position to 103,151 shares worth $11M. The position accounts for 0.54% of the portfolio, ranked #33.

CenterBook Partners first reported a position in INSM in Q3 2024 and has held it in 5 quarters since. 665 funds tracked by Wall St. Rank hold INSM as of Q2 2026.

  • CenterBook Partners held 103,151 shares of Insmed worth $11M as of Q2 2026.
  • CenterBook Partners bought 67,919 Insmed shares in Q2 2026, an estimated $8.22M.
  • Insmed made up 0.54% of CenterBook Partners's portfolio in Q2 2026, its #33 holding.
  • CenterBook Partners first reported a position in Insmed in Q3 2024 and has held it in 5 quarters since.
  • 665 funds tracked by Wall St. Rank held Insmed as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.