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
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

JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DGM
Darwin Global Management St. Helier, Jersey $3.77B AUM 307.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Mariner's INSM Position: Q1 2026 in Review

Mariner reduced its Insmed (INSM) stake by 37% in Q1 2026, selling an estimated $2.03M and leaving 22,072 shares worth $3.61M. The position accounts for ﹤0.01% of the portfolio, ranked #1194.

Mariner first reported a position in INSM in Q4 2023 and has held it in 10 quarters since. The position peaked at $6.14M in Q4 2025. 669 funds tracked by Wall St. Rank hold INSM as of Q1 2026.

  • Mariner held 22,072 shares of Insmed worth $3.61M as of Q1 2026.
  • Mariner sold 13,200 Insmed shares in Q1 2026, an estimated $2.03M.
  • Insmed made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #1194 holding.
  • Mariner first reported a position in Insmed in Q4 2023 and has held it in 10 quarters since.
  • Mariner's Insmed position peaked at $6.14M in Q4 2025.
  • 669 funds tracked by Wall St. Rank held Insmed as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.