RTW Investments’s Insmed INSM Stock Holding History

RTW Investments’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	$792M	Buy	4,842,880 +1	+0%	+$154	7.88%	2
2025 Q4	$843M	Buy	4,842,879 +1,758,321	+57%	+$321M	8.44%	2
2025 Q3	$444M	Hold	3,084,558	–	–	5.47%	5
2025 Q2	$310M	Buy	3,084,558 +70,000	+2%	+$5.35M	4.42%	6
2025 Q1	$230M	Hold	3,014,558	–	–	3.52%	10
2024 Q4	$208M	Sell	3,014,558 -257,450	-8%	-$18.5M	3.15%	11
2024 Q3	$239M	Sell	3,272,008 -368,100	-10%	-$27.2M	3.46%	11
2024 Q2	$244M	Buy	3,640,108 +1,775,000	+95%	+$68.8M	3.78%	8
2024 Q1	$50.6M	Hold	1,865,108	–	–	0.75%	39
2023 Q4	$57.8M	Hold	1,865,108	–	–	0.9%	32
2023 Q3	$47.1M	Buy	1,865,108 +865,108	+87%	+$19.8M	0.99%	26
2023 Q2	$21.1M	Buy	+1,000,000	New	+$19M	0.4%	36

Other funds holding INSM

JP Morgan Chase

JP Morgan Chase New York $1.47T AUM 27.86% 1-Year Est. Return

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return

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

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return

Artisan Partners

Artisan Partners Milwaukee, Wisconsin $61.3B AUM 26.25% 1-Year Est. Return

D.E. Shaw & Co New York $127B AUM 43.98% 1-Year Est. Return

Capital International Investors

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return