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SIMPLEX TRADING, LLC

Position in ARM — Arm Holdings PLC /Uk

CIK 1488542 CHICAGO, IL

Position in ARM

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$4,760,025
-$12,009,877 QoQ
Shares Held
31,465
-79.5% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.17%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2024
7 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ARM Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $514,533,826 across 33 Semiconductors names. ARM ranks #8 (0.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
8 ARM
Arm Holdings PLC /Uk
This page
31,465 $4,760,025

All Filings in ARM

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7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $4,760,025 31,465
2025-12-31 $16,769,902 153,416
2025-09-30 $3,825,323 27,036
2025-03-31 $26,999,074 252,824
2024-12-31 $22,920,534 185,802
2024-09-30 $38,290,784 267,749
2024-06-30 $23,757,133 145,197