SEI Investments’s Amylyx Pharmaceuticals AMLX Stock Holding History

SEI Investments’s Portfolio AMLX Stock Details AMLX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.19M	Buy	85,279 +32,423	+61%	+$456K	﹤0.01%	2273
2025 Q4	$639K	Buy	+52,856	New	+$718K	﹤0.01%	2398
2023 Q2	–	Sell	-69,665	Closed	-$2.04M	–	2671
2023 Q1	$2.04M	Buy	69,665 +55,888	+406%	+$1.94M	﹤0.01%	1609
2022 Q4	$509K	Sell	13,777 -49,897	-78%	-$1.77M	﹤0.01%	1994
2022 Q3	$1.79M	Sell	63,674 -30,180	-32%	-$753K	﹤0.01%	1591
2022 Q2	$1.81M	Buy	+93,854	New	+$1.11M	﹤0.01%	1604

Other funds holding AMLX

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return

Commodore Capital New York $1.73B AUM 298.96% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

SVCM

Saturn V Capital Management Austin, Texas $552M AUM 551.78% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

FLAM

First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return

SEI Investments's AMLX Position: Q1 2026 in Review

SEI Investments increased its Amylyx Pharmaceuticals (AMLX) stake by 61% in Q1 2026, buying an estimated $456K and bringing the position to 85,279 shares worth $1.19M. The position accounts for ﹤0.01% of the portfolio, ranked #2273.

SEI Investments first reported a position in AMLX in Q2 2022 and has held it in 6 quarters since. The position peaked at $2.04M in Q1 2023. 171 funds tracked by Wall St. Rank hold AMLX as of Q1 2026.

SEI Investments held 85,279 shares of Amylyx Pharmaceuticals worth $1.19M as of Q1 2026.
SEI Investments bought 32,423 Amylyx Pharmaceuticals shares in Q1 2026, an estimated $456K.
Amylyx Pharmaceuticals made up ﹤0.01% of SEI Investments's portfolio in Q1 2026, its #2273 holding.
SEI Investments first reported a position in Amylyx Pharmaceuticals in Q2 2022 and has held it in 6 quarters since.
SEI Investments's Amylyx Pharmaceuticals position peaked at $2.04M in Q1 2023.
171 funds tracked by Wall St. Rank held Amylyx Pharmaceuticals as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.