# CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND

CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND (CIK 1171471) is an SEC-registered fund company and $967.8M in net assets as of 2026-04-30.

## Registrant

- CIK: 1171471
- File number: 811-21080
- LEI: 549300ZBRGRX6VMFJ315
- Address: 2020 CALAMOS COURT, NAPERVILLE, US-IL, 60563
- Phone: 630-245-7200
- Net assets: $967.8M
- Total assets: $1.5B
- Latest report: 2026-04-30

## Fund series (1)

| Series | Net assets |
| --- | --- |
| CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND | $967.8M |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [WESTERN DIGITAL CORP](https://search.stillhousedata.com/security/958102AT2) | $48.7M |
| [LUMENTUM HOLDINGS INC](https://search.stillhousedata.com/security/55024UAJ8) | $46.3M |
| [BLOOM ENERGY CORP](https://search.stillhousedata.com/security/093712AN7) | $30.0M |
| [BOEING CO/THE](https://search.stillhousedata.com/security/097023204) | $29.0M |
| [MKS INC](https://search.stillhousedata.com/security/55306NAB0) | $27.9M |
| [AKAMAI TECHNOLOGIES INC](https://search.stillhousedata.com/security/00971TAP6) | $23.6M |
| [ON SEMICONDUCTOR CORP](https://search.stillhousedata.com/security/682189AU9) | $21.0M |
| [ORACLE CORP](https://search.stillhousedata.com/security/68389X204) | $20.6M |
| [DIGITAL REALTY TRUST LP](https://search.stillhousedata.com/security/25389JAX4) | $20.5M |
| [BWX TECHNOLOGIES INC](https://search.stillhousedata.com/security/05605HAD2) | $20.1M |
| [PPL CORPORATION](https://search.stillhousedata.com/security/69351T866) | $19.4M |
| [CENTERPOINT ENERGY INC](https://search.stillhousedata.com/security/15189TBQ9) | $19.1M |
| [CLOUDFLARE INC](https://search.stillhousedata.com/security/18915MAE7) | $19.0M |
| [ADVANCED ENERGY IND](https://search.stillhousedata.com/security/007973AE0) | $18.5M |
| [LIVE NATION ENTERTAINMEN](https://search.stillhousedata.com/security/538034BC2) | $18.3M |

## More

- [CIK 1171471 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1171471&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/1171471.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.