Caption Management’s Amylyx Pharmaceuticals AMLX Stock Holding History

Caption Management’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 Q2	$14.4K	Buy	+800	New	+$12.4K	﹤0.01%	1580
2024 Q3	–	Sell	-150,000	Closed	-$285K	–	1249
2024 Q2	$285K	Hold	150,000	–	–	﹤0.01%	907
2024 Q1	$426K	Buy	+150,000	New	+$1.96M	0.01%	906
2023 Q4	–	Sell	-227,800	Closed	-$4.17M	–	1318
2023 Q3	$4.17M	Buy	227,800 +53,800	+31%	+$1.14M	0.06%	365
2023 Q2	$3.75M	Buy	174,000 +159,000	+1,060%	+$4.29M	0.07%	352
2023 Q1	$440K	Buy	+15,000	New	+$521K	0.01%	812
2022 Q4	–	Sell	-145,000	Closed	-$4.08M	–	1257
2022 Q3	$4.08M	Buy	145,000 +95,000	+190%	+$2.37M	0.06%	410
2022 Q2	$963K	Buy	+50,000	New	+$594K	0.01%	891

Other funds holding AMLX

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return

Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return

Jupiter Topco New York $245B AUM

SVCM

Saturn V Capital Management Austin, Texas $697M AUM 628.57% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return

Caption Management's AMLX Position: Q2 2026 in Review

Caption Management opened a new position in Amylyx Pharmaceuticals (AMLX) in Q2 2026: 174 shares worth $3.13K. The stake represents ﹤0.01% of the portfolio and ranks #1590 among its holdings. This is a return to the name: Caption Management previously reported a position in AMLX as recently as Q2 2024.

Caption Management first reported a position in AMLX in Q1 2022 and has held it in 8 quarters since. The position peaked at $1.63M in Q3 2023. 206 funds tracked by Wall St. Rank hold AMLX as of Q2 2026.

Caption Management held 174 shares of Amylyx Pharmaceuticals worth $3.13K as of Q2 2026.
Amylyx Pharmaceuticals was a new Caption Management position in Q2 2026.
Amylyx Pharmaceuticals made up ﹤0.01% of Caption Management's portfolio in Q2 2026, its #1590 holding.
Caption Management first reported a position in Amylyx Pharmaceuticals in Q1 2022 and has held it in 8 quarters since.
Caption Management's Amylyx Pharmaceuticals position peaked at $1.63M in Q3 2023.
206 funds tracked by Wall St. Rank held Amylyx Pharmaceuticals as of Q2 2026.

Based on Caption Management's 13F filing for Q2 2026, filed 14 Aug 2026.