ARM — ARM HOLDINGS PLC

Ownership history in Robeco Schweiz AG  ·  10 quarters on record

AI Ownership Summary

Robeco Schweiz AG reported ARM HOLDINGS PLC (ARM) in 10 quarterly 13F filings from 2023 Q3 through 2025 Q4. Peak portfolio weight reached 3.67% in 2024 Q2. The latest visible filing shows ARM at 1.62% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this ARM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Robeco Schweiz AG's position in ARM HOLDINGS PLC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

ARM was reported at 1.62% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
3.67% in 2024 Q2

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q3 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ARM stock page Robeco Schweiz AG fund profile Robeco Schweiz AG full holdings
How Robeco Schweiz AG held ARM — position size vs. price
% of Fund (quarterly)    ARM price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 662,665 -12,735 -1.9% 1.62% $72.4M 2026-02-14 (Est.) $125.28
2025 Q3 REDUCED 675,400 -56,096 -7.7% 2.15% $95.6M 2025-10-27 $178.62
2025 Q2 REDUCED 731,496 -46,795 -6.0% 2.73% $118.3M 2025-08-07 $135.57
2025 Q1 REDUCED 778,291 -66,714 -7.9% 2.04% $83.1M 2025-04-30 $114.05
2024 Q4 REDUCED 845,005 -210,005 -19.9% 2.23% $104.2M 2025-02-05 $173.26
2024 Q3 REDUCED 1,055,010 -112,000 -9.6% 2.83% $150.9M 2024-11-04 $137.53
2024 Q2 REDUCED 1,167,010 -120,150 -9.3% 3.67% $190.9M 2024-08-08 $118.43
2024 Q1 REDUCED 1,287,160 -842,840 -39.6% 2.81% $160.9M 2024-04-25 $97.93
2023 Q4 ADDED 2,130,000 +1,465,000 +220.3% 2.69% $160.1M 2024-02-14 $126.40
2023 Q3 INITIATED 665,000 — — 0.60% $35.6M 2023-11-08 $54.40

🏢 Other funds also holding ARM

As of 2025 Q4 — sorted by position size

Alphabet Inc. 3Y 8.31% Hyperion Asset Management Ltd 3Y 5.61% Renaissance Capital LLC 3Y 5.5% LANSDOWNE PARTNERS (UK) LLP 3Y 7Y 3.78% Defender Capital, LLC. 3Y 3.57% Longitude (Cayman) Ltd. 3Y 2.83% TRAN CAPITAL MANAGEMENT, L.P. 3Y 7Y 2.48% Longitude (Cayman) Ltd. 3Y 2.36% DOCK STREET ASSET MANAGEMENT INC 3Y 7Y 2.17% MARK ASSET MANAGEMENT LP 3Y 7Y 2.06%

FAQ About Robeco Schweiz AG and ARM

These are the practical questions this page is built to answer before you even open the full history table.

How long has Robeco Schweiz AG reported owning ARM?

Robeco Schweiz AG reported ARM across 10 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported ARM position in Robeco Schweiz AG's portfolio?

The largest reported portfolio weight for ARM was 3.67% in 2024 Q2.

What is the latest reported ARM position on this page?

The most recent filing on this page is 2025 Q4, when Robeco Schweiz AG reported 662,665 shares, equal to 1.62% of portfolio, with an estimated market value of $72.4M.

What does the chart on this ARM ownership page compare?

The chart compares Robeco Schweiz AG's quarterly ARM portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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