Simplex Trading’s Arm ARM Stock Holding History

Simplex Trading’s Portfolio ARM Stock Details ARM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$86.3M	Sell	570,400 -398,400	-41%	-$48.3M	0.06%	131
2025 Q4	$106M	Sell	968,800 -272,800	-22%	-$39.7M	0.06%	146
2025 Q3	$176M	Buy	1,241,600 +229,800	+23%	+$33.5M	0.09%	105
2025 Q2	$164M	Buy	1,011,800 +101,200	+11%	+$12.6M	0.09%	110
2025 Q1	$97.2M	Buy	910,600 +3,400	+0.4%	+$474K	0.06%	147
2024 Q4	$112M	Sell	907,200 -122,300	-12%	-$17.2M	0.06%	152
2024 Q3	$147M	Buy	1,029,500 +65,800	+7%	+$9.35M	0.09%	112
2024 Q2	$158M	Sell	963,700 -582,100	-38%	-$72.4M	0.1%	95
2024 Q1	$193M	Buy	1,545,800 +634,900	+70%	+$67.3M	0.11%	83
2023 Q4	$68.4M	Buy	910,900 +561,600	+161%	+$32.8M	0.04%	256
2023 Q3	$18.7M	Buy	+349,300	New	+$19.3M	0.01%	618

Other funds holding ARM

DZ Bank Frankfurt Am Main, Germany $113B AUM 36.92% 1-Year Est. Return

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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Schroder Investment Management Group London, United Kingdom $122B AUM 29.27% 1-Year Est. Return

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

VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return

SGA

Sustainable Growth Advisers Stamford, Connecticut $10.6B AUM 2.6% 1-Year Est. Return

Alphabet Inc Mountain View, California $4.02B AUM 215.74% 1-Year Est. Return

ACM

Altimeter Capital Management Boston, Massachusetts $5.7B AUM 36.74% 1-Year Est. Return

Simplex Trading's ARM Position: Q1 2026 in Review

Simplex Trading reduced its Arm (ARM) stake by 79% in Q1 2026, selling an estimated $14.8M and leaving 31,465 shares worth $4.76M. The position accounts for ﹤0.01% of the portfolio, ranked #1146.

Simplex Trading first reported a position in ARM in Q2 2024 and has held it in 7 quarters since. The position peaked at $38.3M in Q3 2024. 742 funds tracked by Wall St. Rank hold ARM as of Q1 2026.

Simplex Trading held 31,465 shares of Arm worth $4.76M as of Q1 2026.
Simplex Trading sold 121,951 Arm shares in Q1 2026, an estimated $14.8M.
Arm made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #1146 holding.
Simplex Trading first reported a position in Arm in Q2 2024 and has held it in 7 quarters since.
Simplex Trading's Arm position peaked at $38.3M in Q3 2024.
742 funds tracked by Wall St. Rank held Arm as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.