Jane Street
INSM icon

Jane Street’s Insmed INSM Stock Holding History

Jane Street’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 		$54.7M Sell
334,500
-222,600
-40% -$34.2M 0.01% 994
2025
Q4 		$97M Buy
557,100
+319,200
+134% +$58.2M 0.01% 600
2025
Q3 		$34.3M Buy
237,900
+91,800
+63% +$11.2M 0.01% 1185
2025
Q2 		$14.7M Sell
146,100
-21,600
-13% -$1.65M ﹤0.01% 1748
2025
Q1 		$12.8M Buy
167,700
+44,900
+37% +$3.43M ﹤0.01% 1707
2024
Q4 		$8.48M Sell
122,800
-140,500
-53% -$10.1M ﹤0.01% 2050
2024
Q3 		$19.2M Buy
263,300
+65,400
+33% +$4.83M ﹤0.01% 1271
2024
Q2 		$13.3M Buy
197,900
+23,200
+13% +$900K ﹤0.01% 1713
2024
Q1 		$4.74M Buy
174,700
+122,800
+237% +$3.44M ﹤0.01% 2692
2023
Q4 		$1.61M Buy
51,900
+5,300
+11% +$137K ﹤0.01% 4718
2023
Q3 		$1.18M Buy
46,600
+35,500
+320% +$812K ﹤0.01% 4946
2023
Q2 		$234K Sell
11,100
-28,700
-72% -$545K ﹤0.01% 7476
2023
Q1 		$679K Buy
39,800
+24,200
+155% +$470K ﹤0.01% 5766
2022
Q4 		$312K Sell
15,600
-27,000
-63% -$522K ﹤0.01% 6955
2022
Q3 		$918K Sell
42,600
-4,000
-9% -$95.9K ﹤0.01% 5558
2022
Q2 		$919K Buy
46,600
+21,600
+86% +$453K ﹤0.01% 5646
2022
Q1 		$588K Sell
25,000
-17,100
-41% -$397K ﹤0.01% 7165
2021
Q4 		$1.15M Buy
+42,100
New +$1.2M ﹤0.01% 5614
2021
Q3 		– Sell
-18,400
Closed -$524K – 10304
2021
Q2 		$524K Sell
18,400
-7,600
-29% -$226K ﹤0.01% 7150
2021
Q1 		$886K Buy
26,000
+5,800
+29% +$222K ﹤0.01% 5683
2020
Q4 		$672K Sell
20,200
-92,200
-82% -$3.37M ﹤0.01% 5299
2020
Q3 		$3.61M Buy
112,400
+69,100
+160% +$1.99M ﹤0.01% 2221
2020
Q2 		$1.19M Buy
+43,300
New +$1.03M ﹤0.01% 3815
2017
Q4 		– Sell
-25,900
Closed -$808K – 4861
2017
Q3 		$808K Buy
+25,900
New +$493K ﹤0.01% 2520

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

Jane Street's INSM Position: Q1 2026 in Review

Jane Street reduced its Insmed (INSM) stake by 16% in Q1 2026, selling an estimated $323K and leaving 11,401 shares worth $1.86M. The position accounts for ﹤0.01% of the portfolio, ranked #5232.

Jane Street first reported a position in INSM in Q2 2013 and has held it in 35 quarters since. The position peaked at $136M in Q2 2025. 670 funds tracked by Wall St. Rank hold INSM as of Q1 2026.

  • Jane Street held 11,401 shares of Insmed worth $1.86M as of Q1 2026.
  • Jane Street sold 2,104 Insmed shares in Q1 2026, an estimated $323K.
  • Insmed made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5232 holding.
  • Jane Street first reported a position in Insmed in Q2 2013 and has held it in 35 quarters since.
  • Jane Street's Insmed position peaked at $136M in Q2 2025.
  • 670 funds tracked by Wall St. Rank held Insmed as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.