# CENTURY ALUM CO (CENX) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 156431108
Page URL: https://superinvestorclub.com/stock/CENX
Last updated: 2026-07-08T12:27:23.246Z

## Summary

As of the most recent 13F filing period, CENTURY ALUM CO (CENX) is held by 1 tracked superinvestors with an aggregate position value of $43.0M representing 0732517 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 732517 | $43.0M | 0.19% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-03-31: 1 holders, $2.3M aggregate, 0146445 shares
- 2024-06-30: 1 holders, $1.2M aggregate, 074501 shares
- 2024-09-30: 1 holders, $4.0M aggregate, 0247404 shares
- 2024-12-31: 1 holders, $7.9M aggregate, 0431279 shares
- 2025-03-31: 1 holders, $1.4M aggregate, 073514 shares
- 2025-12-31: 1 holders, $10.6M aggregate, 0271798 shares
- 2026-03-31: 1 holders, $43.0M aggregate, 0732517 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "CENTURY ALUM CO (CENX) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/CENX), aggregating SEC 13F, Form 4, and congressional disclosures."