Y-Intercept (Hong Kong) Ltd CENX — CENTURY ALUM CO

Ownership history in Y-Intercept (Hong Kong) Ltd  ·  6 quarters on record

AI Ownership Summary

Y-Intercept (Hong Kong) Ltd reported CENTURY ALUM CO (CENX) in 6 quarterly 13F filings from 2024 Q2 through 2026 Q1. Peak portfolio weight reached 0.12% in 2025 Q4. The latest visible filing shows CENX at 0.10% 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 Y-Intercept (Hong Kong) Ltd's position in CENTURY ALUM 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 0.10% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.12% in 2025 Q4

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

Time in book
Holding Window
2024 Q2 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 Y-Intercept (Hong Kong) Ltd fund profile Y-Intercept (Hong Kong) Ltd full holdings
How Y-Intercept (Hong Kong) Ltd 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 — — — 90,400 -50,800 -36.0% 0.10% $5.3M 2026-04-27 $61.63
2025 Q4 ADDED — — — 141,200 +91,086 +181.8% 0.12% $5.5M 2026-02-13 $46.04
2025 Q3 ADDED — — — 50,114 +32,448 +183.7% 0.04% $1.5M 2025-10-31 $29.62
2024 Q4 REDUCED 27.2% +1.9% ❌ 17,666 -6,596 -27.2% 0.02% $322K 2025-02-04 $18.47
2024 Q3 REDUCED 52.3% +12.3% ❌ 24,262 -26,594 -52.3% 0.02% $394K 2024-11-15 $22.62
2024 Q2 INITIATED — — — 50,856 — — 0.05% $852K 2024-08-14 $13.44

🏢 Other funds also holding CENX

As of 2026 Q1 — sorted by position size

Glencore plc 29.46% Westend Capital Management, LLC 3Y 7Y 6.66% SummerHaven Investment Management, LLC 3Y 1.49% Insight Wealth Strategies, LLC 3Y 7Y 0.96% 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% SHEETS SMITH WEALTH MANAGEMENT 3Y 7Y 0.1%

FAQ About Y-Intercept (Hong Kong) Ltd and CENX

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

How long has Y-Intercept (Hong Kong) Ltd reported owning CENX?

Y-Intercept (Hong Kong) Ltd reported CENX across 6 quarterly 13F filings, from 2024 Q2 through 2026 Q1.

What was the largest reported CENX position in Y-Intercept (Hong Kong) Ltd's portfolio?

The largest reported portfolio weight for CENX was 0.12% in 2025 Q4.

What is the latest reported CENX position on this page?

The most recent filing on this page is 2026 Q1, when Y-Intercept (Hong Kong) Ltd reported 90,400 shares, equal to 0.10% of portfolio, with an estimated market value of $5.3M.

What does the chart on this CENX ownership page compare?

The chart compares Y-Intercept (Hong Kong) Ltd'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 Y-Intercept (Hong Kong) Ltd time their CENX position?

Based on 13F filing dates vs. subsequent CENX price moves, Y-Intercept (Hong Kong) Ltd correctly timed 4 out of 5 reported position changes (80%). The annualised alpha on CENX relative to SPY over the holding period was +135.1%.

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