StockSEC filings
CENTURY ALUMINUM CO (CENX): Insider Trades and Fund Holdings
What insiders and tracked funds have reported about CENTURY ALUMINUM CO in SEC filings.
0Insider buys, 12 months
$0Bought by insiders, 12 months
$0Sold by insiders, 12 months
2Tracked funds holding
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Tracked funds that report CENX
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Bridgewater Associates | 473,928 | $21.8M | ▼ −35.3% |
| Renaissance Technologies | 94,299 | $4.34M | ▼ −32.4% |
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →