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Atom Investors’s Insmed INSM Stock Holding History

Atom Investors’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 		$2.58M Buy
+15,768
New +$2.42M 0.18% 190
2025
Q1 		– Sell
-2,947
Closed -$203K – 569
2024
Q4 		$203K Buy
+2,947
New +$212K 0.03% 419
2024
Q2 		– Sell
-9,324
Closed -$253K – 570
2024
Q1 		$253K Sell
9,324
-2,440
-21% -$68.3K 0.03% 444
2023
Q4 		$365K Sell
11,764
-437
-4% -$11.3K 0.06% 327
2023
Q3 		$308K Sell
12,201
-30,512
-71% -$698K 0.07% 319
2023
Q2 		$901K Buy
42,713
+2,489
+6% +$47.2K 0.34% 66
2023
Q1 		$686K Buy
40,224
+17,293
+75% +$336K 0.37% 71
2022
Q4 		$458K Sell
22,931
-21,277
-48% -$411K 0.23% 95
2022
Q3 		$952K Buy
44,208
+27,214
+160% +$652K 0.33% 95
2022
Q2 		$335K Sell
16,994
-4,830
-22% -$101K 0.15% 141
2022
Q1 		$513K Sell
21,824
-21,620
-50% -$502K 0.24% 96
2021
Q4 		$1.18M Buy
+43,444
New +$1.24M 0.2% 95
2019
Q4 		– Sell
-296,365
Closed -$5.23M – 267
2019
Q3 		$5.23M Sell
296,365
-190,610
-39% -$3.68M 0.36% 98
2019
Q2 		$12.5M Buy
486,975
+159,391
+49% +$4.44M 0.81% 25
2019
Q1 		$9.52M Sell
327,584
-482,300
-60% -$12.5M 0.81% 30
2018
Q4 		$10.6M Buy
+809,884
New +$12.9M 1.05% 16

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

Atom Investors's INSM Position: Q1 2026 in Review

Atom Investors opened a new position in Insmed (INSM) in Q1 2026: 15,768 shares worth $2.58M. The stake represents 0.18% of the portfolio and ranks #190 among its holdings. This is a return to the name: Atom Investors previously reported a position in INSM as recently as Q4 2024.

Atom Investors first reported a position in INSM in Q4 2018 and has held it in 16 quarters since. The position peaked at $12.5M in Q2 2019. 669 funds tracked by Wall St. Rank hold INSM as of Q1 2026.

  • Atom Investors held 15,768 shares of Insmed worth $2.58M as of Q1 2026.
  • Insmed was a new Atom Investors position in Q1 2026.
  • Insmed made up 0.18% of Atom Investors's portfolio in Q1 2026, its #190 holding.
  • Atom Investors first reported a position in Insmed in Q4 2018 and has held it in 16 quarters since.
  • Atom Investors's Insmed position peaked at $12.5M in Q2 2019.
  • 669 funds tracked by Wall St. Rank held Insmed as of Q1 2026.

Based on Atom Investors's 13F filing for Q1 2026, filed 15 May 2026.