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XTX Topco’s Amylyx Pharmaceuticals AMLX Stock Holding History

XTX Topco’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 		$465K Buy
+25,864
New +$400K 0.01% 2532
2026
Q1 		– Sell
-189,673
Closed -$2.29M – 3802
2025
Q4 		$2.29M Buy
+189,673
New +$2.58M 0.06% 475
2025
Q2 		– Sell
-39,542
Closed -$140K – 2314
2025
Q1 		$140K Sell
39,542
-13,834
-26% -$49.2K 0.01% 1782
2024
Q4 		$202K Buy
53,376
+5,704
+12% +$26.8K 0.02% 1553
2024
Q3 		$154K Sell
47,672
-162,940
-77% -$366K 0.01% 1514
2024
Q2 		$400K Buy
+210,612
New +$408K 0.03% 779
2024
Q1 		– Sell
-18,913
Closed -$278K – 1798
2023
Q4 		$278K Buy
18,913
+8,814
+87% +$135K 0.06% 692
2023
Q3 		$185K Buy
+10,099
New +$214K 0.03% 1042
2023
Q2 		– Sell
-14,751
Closed -$433K – 1386
2023
Q1 		$433K Buy
+14,751
New +$512K 0.09% 385

Other funds holding AMLX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PA
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
CC
Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
SVCM
Saturn V Capital Management Austin, Texas $697M AUM 628.57% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
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

XTX Topco's AMLX Position: Q2 2026 in Review

XTX Topco opened a new position in Amylyx Pharmaceuticals (AMLX) in Q2 2026: 25,864 shares worth $465K. The stake represents 0.01% of the portfolio and ranks #2532 among its holdings. This is a return to the name: XTX Topco previously reported a position in AMLX as recently as Q4 2025.

XTX Topco first reported a position in AMLX in Q1 2023 and has held it in 9 quarters since. The position peaked at $2.29M in Q4 2025. 206 funds tracked by Wall St. Rank hold AMLX as of Q2 2026.

  • XTX Topco held 25,864 shares of Amylyx Pharmaceuticals worth $465K as of Q2 2026.
  • Amylyx Pharmaceuticals was a new XTX Topco position in Q2 2026.
  • Amylyx Pharmaceuticals made up 0.01% of XTX Topco's portfolio in Q2 2026, its #2532 holding.
  • XTX Topco first reported a position in Amylyx Pharmaceuticals in Q1 2023 and has held it in 9 quarters since.
  • XTX Topco's Amylyx Pharmaceuticals position peaked at $2.29M in Q4 2025.
  • 206 funds tracked by Wall St. Rank held Amylyx Pharmaceuticals as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.