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Superstring Capital Management’s Insmed INSM Stock Holding History

Superstring 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
2025
Q4 		– Sell
-19,786
Closed -$2.85M – 50
2025
Q3 		$2.85M Buy
19,786
+5,215
+36% +$639K 2.81% 16
2025
Q2 		$1.47M Buy
+14,571
New +$1.11M 1.74% 20
2025
Q1 		– Sell
-35,966
Closed -$2.48M – 42
2024
Q4 		$2.48M Buy
+35,966
New +$2.59M 2.15% 14

Other funds holding INSM

JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 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 $3.77B AUM 307.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return

Superstring Capital Management's INSM Position: Q4 2025 in Review

Superstring Capital Management sold out of Insmed (INSM) in Q4 2025, closing a stake of 19,786 shares — an estimated $2.85M sold.

Superstring Capital Management first reported a position in INSM in Q4 2024 and held it in 3 quarters. The position peaked at $2.85M in Q3 2025. 676 funds tracked by Wall St. Rank hold INSM as of Q4 2025.

  • Superstring Capital Management reported no remaining Insmed position as of Q4 2025 after selling out during the quarter.
  • Superstring Capital Management sold 19,786 Insmed shares in Q4 2025, an estimated $2.85M.
  • Superstring Capital Management first reported a position in Insmed in Q4 2024 and held it in 3 quarters.
  • Superstring Capital Management's Insmed position peaked at $2.85M in Q3 2025.
  • 676 funds tracked by Wall St. Rank held Insmed as of Q4 2025.

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