Cubist Systematic Strategies, LLC ARM — ARM HOLDINGS PLC

Ownership history in Cubist Systematic Strategies, LLC  ·  17 quarters on record

AI Ownership Summary

Cubist Systematic Strategies, LLC reported ARM HOLDINGS PLC (ARM) in 17 quarterly 13F filings from 2024 Q1 through 2025 Q3. Peak portfolio weight reached 0.46% in 2024 Q2. The latest visible filing shows ARM at 0.27% 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. Older history is available after unlock; the visible window still shows the most recent pattern.

What this ARM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Cubist Systematic Strategies, LLC'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 Q3

ARM was reported at 0.27% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.46% 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
2024 Q1 to 2025 Q3

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 Cubist Systematic Strategies, LLC fund profile Cubist Systematic Strategies, LLC full holdings
How Cubist Systematic Strategies, LLC held ARM — position size vs. price
% of Fund (quarterly)    ARM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 16 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 ADDED — — — 401,800 +85,000 +26.8% 0.27% $56.9M 2025-11-14 (Est.) $139.77
2025 Q3 REDUCED — — — 316,800 -9,000 -2.8% 0.21% $44.8M 2025-11-14 (Est.) $139.77
2025 Q2 REDUCED — — — 325,800 -800 -0.2% 0.24% $52.7M 2025-08-14 $140.55
2025 Q2 ADDED — — — 326,600 +149,500 +84.4% 0.24% $52.8M 2025-08-14 $140.55
2025 Q1 REDUCED 11.9% +51.5% ❌ 177,100 -24,000 -11.9% 0.11% $18.9M 2025-05-15 $133.07
2025 Q1 ADDED — — — 201,100 +12,300 +6.5% 0.13% $21.5M 2025-05-15 $133.07
2024 Q4 REDUCED 51.5% -13.4% ✅ 188,800 -200,100 -51.5% 0.15% $23.3M 2025-02-14 $159.54
2024 Q4 ADDED — — — 388,900 +70,300 +22.1% 0.30% $48.0M 2025-02-14 $159.54
2024 Q3 REDUCED 28.0% -12.0% ✅ 318,600 -123,600 -28.0% 0.28% $45.6M 2024-11-14 $136.35
2024 Q3 ADDED — — — 442,200 +428,684 +3171.7% 0.39% $63.2M 2024-11-14 $136.35
2024 Q2 REDUCED 96.5% -12.6% ✅ 13,516 -373,684 -96.5% 0.02% $2.2M 2024-08-14 $125.92
2024 Q2 REDUCED 6.3% -12.6% ✅ 387,200 -25,900 -6.3% 0.43% $63.4M 2024-08-14 $125.92
2024 Q2 ADDED — — — 413,100 +338,100 +450.8% 0.46% $67.6M 2024-08-14 $125.92
2024 Q1 ADDED — — — 75,000 +60,364 +412.4% 0.05% $9.4M 2024-05-15 $113.67
2024 Q1 REDUCED 83.7% +27.1% ❌ 14,636 -75,264 -83.7% 0.01% $1.8M 2024-05-15 $113.67
2024 Q1 ADDED — — — 89,900 +87,883 +4357.1% 0.06% $11.2M 2024-05-15 $113.67
1 older quarter hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ARM

As of 2026 Q1 — sorted by position size

Renaissance Capital LLC 3Y 9.01% Hyperion Asset Management Ltd 3Y 7.71% LANSDOWNE PARTNERS (UK) LLP 3Y 7Y 7.58% Tensor Edge Capital, LLC 7.53% Alphabet Inc. 3Y 7.39% TRAN CAPITAL MANAGEMENT, L.P. 3Y 7Y 5.67% Defender Capital, LLC. 3Y 5.31% CTC Alternative Strategies, Ltd. 3Y 7Y 5.27% Analog Century Management LP 3Y 4.99% MARK ASSET MANAGEMENT LP 3Y 7Y 4.85%

FAQ About Cubist Systematic Strategies, LLC and ARM

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

How long has Cubist Systematic Strategies, LLC reported owning ARM?

Cubist Systematic Strategies, LLC reported ARM across 16 quarterly 13F filings, from 2024 Q1 through 2025 Q3.

What was the largest reported ARM position in Cubist Systematic Strategies, LLC's portfolio?

The largest reported portfolio weight for ARM was 0.46% in 2024 Q2.

What is the latest reported ARM position on this page?

The most recent filing on this page is 2025 Q3, when Cubist Systematic Strategies, LLC reported 401,800 shares, equal to 0.27% of portfolio, with an estimated market value of $56.9M.

What does the chart on this ARM ownership page compare?

The chart compares Cubist Systematic Strategies, LLC'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.

How well did Cubist Systematic Strategies, LLC time their ARM position?

Based on 13F filing dates vs. subsequent ARM price moves, Cubist Systematic Strategies, LLC correctly timed 7 out of 16 reported position changes (44%). The annualised alpha on ARM relative to SPY over the holding period was +30.5%.

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