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Rathbone Brothers plc

SEC CIK
0001351991
Latest filing
Jul 23, 2026

ARM holding history

Arm Holdings PLC in every 13F filed by Rathbone Brothers plc, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ARM overviewAll 13F holders of ARMFull Q2 2026 holdings

Shares (Q2 2026)
501,861
Value
$177.9M
% of portfolio
0.7%
Quarters held
12
Since Q3 2023
Holdings of ARM by Rathbone Brothers plc, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026501,861$177.9M0.7%+4,333+0.9%AddedHolders
Q1 2026497,528$75.3M0.3%−2,515−0.5%ReducedHolders
Q4 2025500,043$54.7M0.2%+489,491+4,638.8%AddedHolders
Q3 202510,552$1.49M<0.1%+70+0.7%AddedHolders
Q2 202510,482$1.70M<0.1%+20+0.2%AddedHolders
Q1 202510,462$1.12M<0.1%−6,038−36.6%ReducedHolders
Q4 202416,500$2.04M<0.1%+1,601+10.7%AddedHolders
Q3 202414,899$2.13M<0.1%+2,569+20.8%AddedHolders
Q2 202412,330$2.02M<0.1%+4,614+59.8%AddedHolders
Q1 20247,716$964.4K<0.1%+1,506+24.3%AddedHolders
Q4 20236,210$466.6K<0.1%−181−2.8%ReducedHolders
Q3 20236,391$342.0K<0.1%+6,391NewHolders