Wellington Management Group
INSM icon

Wellington Management Group’s Insmed INSM Stock Holding History

Wellington Management Group’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 		$65.3M Sell
399,044
-87,094
-18% -$13.4M 0.01% 652
2025
Q4 		$84.6M Sell
486,138
-231,905
-32% -$42.3M 0.01% 589
2025
Q3 		$103M Sell
718,043
-441,656
-38% -$54.1M 0.02% 545
2025
Q2 		$117M Sell
1,159,699
-62,928
-5% -$4.81M 0.02% 486
2025
Q1 		$93.3M Buy
1,222,627
+470,401
+63% +$36M 0.02% 517
2024
Q4 		$51.9M Sell
752,226
-210,233
-22% -$15.1M 0.01% 695
2024
Q3 		$70.3M Buy
962,459
+24,025
+3% +$1.77M 0.01% 623
2024
Q2 		$62.9M Buy
+938,434
New +$36.4M 0.01% 646
2020
Q1 		– Sell
-42,385
Closed -$1.01M – 1980
2019
Q4 		$1.01M Sell
42,385
-576,758
-93% -$11.7M ﹤0.01% 1705
2019
Q3 		$10.9M Sell
619,143
-19,447
-3% -$376K ﹤0.01% 1136
2019
Q2 		$16.3M Buy
+638,590
New +$17.8M ﹤0.01% 1063
2018
Q2 		– Sell
-137,340
Closed -$3.09M – 2276
2018
Q1 		$3.09M Buy
137,340
+55,582
+68% +$1.46M ﹤0.01% 1622
2017
Q4 		$2.55M Buy
+81,758
New +$2.42M ﹤0.01% 1658

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 $6.73T AUM 46.02% 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

Wellington Management Group's INSM Position: Q1 2026 in Review

Wellington Management Group reduced its Insmed (INSM) stake by 18% in Q1 2026, selling an estimated $13.4M and leaving 399,044 shares worth $65.3M. The position accounts for 0.01% of the portfolio, ranked #652.

Wellington Management Group first reported a position in INSM in Q4 2017 and has held it in 13 quarters since. The position peaked at $117M in Q2 2025. 672 funds tracked by Wall St. Rank hold INSM as of Q1 2026.

  • Wellington Management Group held 399,044 shares of Insmed worth $65.3M as of Q1 2026.
  • Wellington Management Group sold 87,094 Insmed shares in Q1 2026, an estimated $13.4M.
  • Insmed made up 0.01% of Wellington Management Group's portfolio in Q1 2026, its #652 holding.
  • Wellington Management Group first reported a position in Insmed in Q4 2017 and has held it in 13 quarters since.
  • Wellington Management Group's Insmed position peaked at $117M in Q2 2025.
  • 672 funds tracked by Wall St. Rank held Insmed as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.