Fred Alger Management’s Insmed INSM Stock Holding History

Fred Alger Management’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	$20.6M	Buy	125,766 +44,455	+55%	+$6.83M	0.09%	111
2025 Q4	$14.2M	Sell	81,311 -12,722	-14%	-$2.32M	0.06%	145
2025 Q3	$13.5M	Sell	94,033 -95,686	-50%	-$11.7M	0.05%	159
2025 Q2	$19.1M	Sell	189,719 -188,612	-50%	-$14.4M	0.09%	123
2025 Q1	$28.9M	Sell	378,331 -7,129	-2%	-$545K	0.16%	85
2024 Q4	$26.6M	Sell	385,460 -66,856	-15%	-$4.81M	0.13%	110
2024 Q3	$33M	Sell	452,316 -46,256	-9%	-$3.41M	0.16%	100
2024 Q2	$33.4M	Buy	+498,572	New	+$19.3M	0.16%	96
2019 Q3	–	Sell	-13,000	Closed	-$333K	–	517
2019 Q2	$333K	Buy	+13,000	New	+$362K	﹤0.01%	393

Other funds holding INSM

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

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 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 Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Fred Alger Management's INSM Position: Q1 2026 in Review

Fred Alger Management increased its Insmed (INSM) stake by 55% in Q1 2026, buying an estimated $6.83M and bringing the position to 125,766 shares worth $20.6M. The position accounts for 0.09% of the portfolio, ranked #111.

Fred Alger Management first reported a position in INSM in Q2 2019 and has held it in 9 quarters since. The position peaked at $33.4M in Q2 2024. 669 funds tracked by Wall St. Rank hold INSM as of Q1 2026.

Fred Alger Management held 125,766 shares of Insmed worth $20.6M as of Q1 2026.
Fred Alger Management bought 44,455 Insmed shares in Q1 2026, an estimated $6.83M.
Insmed made up 0.09% of Fred Alger Management's portfolio in Q1 2026, its #111 holding.
Fred Alger Management first reported a position in Insmed in Q2 2019 and has held it in 9 quarters since.
Fred Alger Management's Insmed position peaked at $33.4M in Q2 2024.
669 funds tracked by Wall St. Rank held Insmed as of Q1 2026.

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