Company · CIK 1171471 # CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND Source: SEC EDGAR · as of 2026-10-27 06:30 UTC · latest filing day 2026-10-26 | CIK | [1171471](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001171471) (SEC EDGAR) | | --- | --- | | Business address | IL | | Listed | CHI (Nasdaq) | | First annual or quarterly report | none on EDGAR | ## Offerings 0 registrations No offering chain starts here after 2002-11-04: the company's filings belong to registrations filed earlier, or to drafts and notices only. ## Filings 9 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2025-02-24 | [424B5](https://www.sec.gov/Archives/edgar/data/1171471/000110465925016492/0001104659-25-016492-index.htm) Shelf takedown | 333-285118 | 0001104659-25-016492 | | 2022-03-03 | [424B5](https://www.sec.gov/Archives/edgar/data/1171471/000110465922030098/0001104659-22-030098-index.htm) Shelf takedown | 333-262969 | 0001104659-22-030098 | | 2021-03-05 | [424B5](https://www.sec.gov/Archives/edgar/data/1171471/000110465921032477/0001104659-21-032477-index.htm) Shelf takedown | 333-229042 | 0001104659-21-032477 | | 2019-03-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999519000352/9999999995-19-000352-index.htm) Declared effective | 333-229042 | 9999999995-19-000352 | | 2014-12-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999514003543/9999999995-14-003543-index.htm) Declared effective | 333-196373 | 9999999995-14-003543 | | 2011-06-02 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999511001722/9999999995-11-001722-index.htm) Declared effective | 333-173767 | 9999999995-11-001722 | | 2010-03-03 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999510000651/9999999995-10-000651-index.htm) Declared effective | 333-146945 | 9999999995-10-000651 | | 2009-04-10 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999509000916/9999999995-09-000916-index.htm) Declared effective | 333-146945 | 9999999995-09-000916 | | 2008-03-11 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1171471/999999999508000755/9999999995-08-000755-index.htm) Declared effective | 333-146945 | 9999999995-08-000755 | [All filings of this company](https://equitycapital.markets/filings?cik=1171471) · [CSV](https://equitycapital.markets/filings.csv?cik=1171471) --- Source page: https://equitycapital.markets/company/1171471 · Data: U.S. SEC EDGAR · CC BY 4.0