Glencore plc CENX — Century Aluminum Co.

Ownership history in Glencore plc  ·  6 quarters on record

AI Ownership Summary

Glencore plc reported Century Aluminum Co. (CENX) in 6 quarterly 13F filings from 2024 Q4 through 2026 Q1. Peak portfolio weight reached 88.62% in 2025 Q1. The latest visible filing shows CENX at 29.46% 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 CENX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Glencore plc's position in Century Aluminum Co., 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
2026 Q1

CENX was reported at 29.46% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
88.62% in 2025 Q1

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

Time in book
Holding Window
2024 Q4 to 2026 Q1

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.

CENX stock page Glencore plc fund profile Glencore plc full holdings
How Glencore plc held CENX — position size vs. price
% of Fund (quarterly)    CENX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 6 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 29,690,702 -23,821,192 -44.5% 29.46% $1.74B 2026-04-27 $61.63
2025 Q4 ADDED — — — 53,511,894 +13,454,538 +33.6% 26.40% $2.10B 2026-01-22 $48.30
2025 Q3 ADDED — — — 40,057,356 +2,848 +0.0% 29.67% $1.18B 2025-10-31 $29.62
2025 Q2 ADDED — — — 40,054,508 +16,477 +0.0% 85.65% $721.8M 2025-07-24 $22.82
2025 Q1 ADDED — — — 40,038,031 +3,593 +0.0% 88.62% $743.1M 2025-04-30 $16.41
2024 Q4 INITIATED — — — 40,034,438 — — 87.29% $729.4M 2025-02-14 $20.94

🏢 Other funds also holding CENX

As of 2026 Q1 — sorted by position size

Westend Capital Management, LLC 3Y 7Y 6.66% SummerHaven Investment Management, LLC 3Y 1.49% Insight Wealth Strategies, LLC 3Y 7Y 0.96% BW Gestao de Investimentos Ltda. 3Y 7Y 0.6% FCG Investment Co 0.27% Assenagon Asset Management S.A. 3Y 7Y 0.16% Perennial Advisors, LLC 3Y 7Y 0.13% CONGRESS ASSET MANAGEMENT CO 3Y 7Y 0.11% Counterpoint Mutual Funds LLC 3Y 0.1% Y-Intercept (Hong Kong) Ltd 3Y 0.1%

FAQ About Glencore plc and CENX

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

How long has Glencore plc reported owning CENX?

Glencore plc reported CENX across 6 quarterly 13F filings, from 2024 Q4 through 2026 Q1.

What was the largest reported CENX position in Glencore plc's portfolio?

The largest reported portfolio weight for CENX was 88.62% in 2025 Q1.

What is the latest reported CENX position on this page?

The most recent filing on this page is 2026 Q1, when Glencore plc reported 29,690,702 shares, equal to 29.46% of portfolio, with an estimated market value of $1.74B.

What does the chart on this CENX ownership page compare?

The chart compares Glencore plc's quarterly CENX 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 Glencore plc time their CENX position?

Based on 13F filing dates vs. subsequent CENX price moves, Glencore plc correctly timed 4 out of 5 reported position changes (80%). The annualised alpha on CENX relative to SPY over the holding period was +113.5%.

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