Mariner
INSM icon

Mariner’s Insmed INSM Stock Holding History

Mariner’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 		– Sell
-22,072
Closed -$3.61M – 3729
2026
Q1 		$3.61M Sell
22,072
-13,200
-37% -$2.03M ﹤0.01% 1194
2025
Q4 		$6.14M Buy
35,272
+6,403
+22% +$1.17M 0.01% 922
2025
Q3 		$4.16M Sell
28,869
-506
-2% -$62K 0.01% 1021
2025
Q2 		$2.96M Sell
29,375
-2,473
-8% -$189K ﹤0.01% 1110
2025
Q1 		$2.43M Buy
31,848
+1,060
+3% +$81.1K ﹤0.01% 1133
2024
Q4 		$2.13M Buy
30,788
+5,844
+23% +$421K ﹤0.01% 1186
2024
Q3 		$1.82M Buy
24,944
+5,943
+31% +$439K ﹤0.01% 1242
2024
Q2 		$1.27M Buy
19,001
+9,931
+109% +$385K ﹤0.01% 1355
2024
Q1 		$246K Hold
9,070
– – ﹤0.01% 2600
2023
Q4 		$281K Buy
+9,070
New +$235K ﹤0.01% 2407

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

Mariner's INSM Position: Q2 2026 in Review

Mariner sold out of Insmed (INSM) in Q2 2026, closing a stake of 22,072 shares — an estimated $3.61M sold.

Mariner first reported a position in INSM in Q4 2023 and held it in 10 quarters. The position peaked at $6.14M in Q4 2025. 666 funds tracked by Wall St. Rank hold INSM as of Q2 2026.

  • Mariner reported no remaining Insmed position as of Q2 2026 after selling out during the quarter.
  • Mariner sold 22,072 Insmed shares in Q2 2026, an estimated $3.61M.
  • Mariner first reported a position in Insmed in Q4 2023 and held it in 10 quarters.
  • Mariner's Insmed position peaked at $6.14M in Q4 2025.
  • 666 funds tracked by Wall St. Rank held Insmed as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.