Latest Period
Q1 2026
Security Snapshot
CENTURY ALUM CO - NOTE 2.750% 5/0 Institutional Ownership
CUSIP: 156431AQ1
13F Institutional Holders and Ownership History from Q2 2022 to Q1 2026
Institutions Reporting
12
Principal
$86,128,000
Price (% of par)
314.35%
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- Type / Class
- Debt / NOTE 2.750% 5/0
- Market price (% of par)
- 314.35%
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F principal
- $86,128,000
- Total reported market value
- $268,499,128
- Principal change
- +$9,394,250
- Market value change
- +$29,985,917
- Number of holders
- 12
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- 156431AQ1 - CENTURY ALUM CO - NOTE 2.750% 5/0 is tracked under CUSIP 156431AQ1.
- 12 institutions reported positions in Q1 2026.
- Schedule 13D/13G significant owner rows are not currently available.
Change
- Holder count moved from 12 to 12 between Q4 2025 and Q1 2026.
- Reported value moved from $161,558,342 to $268,499,128.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 12 institutions filings for Q1 2026.
Security key
156431AQ1
Latest holder period
Q1 2026
13F holders
12
13D/G owners
0
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 156431AQ1:
As of 31 Mar 2026, 12 institutional investors reported holding $86,128,000 in principal (par value) of CENTURY ALUM CO - NOTE 2.750% 5/0.
Institutional Holders of CENTURY ALUM CO - NOTE 2.750% 5/0 across Reporting Periods
| Period | Principal | Value | Change | Price (% of par) (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | $86,128,000 | $268,499,128 | +$29,985,917 | 314.35% | 12 |
| 2025 Q4 | $76,733,750 | $161,558,342 | +$81,362,160 | 210.45% | 12 |
| 2025 Q3 | $38,184,934 | $133,906,847 | -$272,903 | 163.39% | 11 |
| 2025 Q2 | $36,835,428 | $91,285,222 | 119.44% | 10 | |
| 2025 Q1 | $36,835,428 | $93,138,012 | -$4,395,752 | 121.65% | 10 |
| 2024 Q4 | $40,725,303 | $95,445,278 | -$3,753,540 | 118.85% | 11 |
| 2024 Q3 | $61,919,592 | $68,590,351 | -$3,152,829 | 110.75% | 15 |
| 2024 Q2 | $64,787,092 | $71,129,941 | -$999,265 | 110.0% | 14 |
| 2024 Q1 | $66,609,448 | $87,645,568 | -$18,872,934,919 | 102.04% | 14 |
| 2023 Q4 | $82,438,000 | $71,809,492 | +$9,014,257 | 87.28% | 13 |
| 2023 Q3 | $76,894,632 | $52,882,605 | -$688,631 | 68.79% | 12 |
| 2023 Q2 | $77,918,699 | $64,441,747 | -$2,529,307 | 77.58% | 11 |
| 2023 Q1 | $81,045,176 | $70,792,653 | +$20,525,768 | 81.68% | 10 |
| 2022 Q4 | $56,629,174 | $44,373,746 | -$303,917 | 72.21% | 8 |
| 2022 Q3 | $57,128,880 | $38,547,274 | -$853,247 | 63.02% | 9 |
| 2022 Q2 | $56,546,039 | $47,326,123 | +$47,326,123 | 76.7% | 11 |