# Calamos Convertible Opportunities & Income Fund: filings

CHI · Nasdaq · CIK 1171471 · [Other](/sectors/other.md) · fiscal year ends Oct 31

Pages: [Overview](/companies/chi.md) · [Financials](/companies/chi/financials.md) · [Filings](/companies/chi/filings.md) · [Insiders](/companies/chi/insiders.md)

## Reports and events: 22 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (497 31, NPORT-P 28, 3 25, N-Q 21, 40-17G 18, DEF 14A 18, N-CSRS 18, N-PX 18, 5 17, N-CSR 17, 4 15, 424B3 11, 40-33 10, CORRESP 10, 40-17G/A 9, 486BPOS 9, NSAR-A 9, NSAR-B 9, SC 13G/A 9, N-CEN 8, SC 13G 7, POS EX 6, EFFECT 5, N-23C-2 4, N-2/A 4, 424B5 3, 8-K 3, N-2 3, 3/A 2, 40-APP/A 2, N-2ASR 2, POS 8C 2, SCHEDULE 13G 2, SCHEDULE 13G/A 2, 25 1, 4/A 1, 8-A12B 1, APP NTC 1, APP ORDR 1, CERTNAS 1, N-2 POSASR 1, N-CEN/A 1, N-CSR/A 1, NO ACT 1, NPORT-EX 1, NPORT-P/A 1, NSAR-B/A 1, SC 13D 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-05-11 | 15:48 ET | [DEF 14A](/filings/0001104659-26-058601.md) | Proxy statement, period 2026-06-23 | 0001104659-26-058601 |
| 2025-05-12 | 13:07 ET | [DEF 14A](/filings/0001104659-25-047185.md) | Proxy statement, period 2025-06-23 | 0001104659-25-047185 |
| 2024-05-14 | 08:21 ET | [8-K](/filings/0001104659-24-060902.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001104659-24-060902 |
| 2024-05-14 | 21:53 ET | [DEF 14A](/filings/0001104659-24-060777.md) | Proxy statement, period 2024-06-26 | 0001104659-24-060777 |
| 2023-05-08 | 16:22 ET | [DEF 14A](/filings/0001104659-23-057171.md) | Proxy statement, period 2023-06-20 | 0001104659-23-057171 |
| 2022-05-11 | 15:09 ET | [DEF 14A](/filings/0001104659-22-058740.md) | Proxy statement, period 2022-06-28 | 0001104659-22-058740 |
| 2021-08-26 | 16:17 ET | [8-K](/filings/0001104659-21-109808.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001104659-21-109808 |
| 2021-05-12 | 17:26 ET | [DEF 14A](/filings/0001104659-21-065239.md) | Proxy statement, period 2021-06-29 | 0001104659-21-065239 |
| 2021-01-12 | 16:34 ET | [8-K](/filings/0001104659-21-003468.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001104659-21-003468 |
| 2020-05-14 | 15:16 ET | [DEF 14A](/filings/0001193125-20-142711.md) | Proxy statement, period 2020-06-29 | 0001193125-20-142711 |
| 2019-05-24 | 17:20 ET | [DEF 14A](/filings/0001193125-19-157196.md) | Proxy statement, period 2019-07-09 | 0001193125-19-157196 |
| 2018-05-14 | 17:32 ET | [DEF 14A](/filings/0001193125-18-161084.md) | Proxy statement, period 2018-06-28 | 0001193125-18-161084 |
| 2017-09-15 | 16:01 ET | [SC 13D](/filings/0000009015-17-000014.md) | Ownership report, active investor | 0000009015-17-000014 |
| 2017-05-04 | 16:40 ET | [DEF 14A](/filings/0001193125-17-158833.md) | Proxy statement, period 2017-06-20 | 0001193125-17-158833 |
| 2016-05-10 | 17:00 ET | [DEF 14A](/filings/0001193125-16-585739.md) | Proxy statement, period 2016-06-30 | 0001193125-16-585739 |
| 2015-06-04 | 12:24 ET | [DEF 14A](/filings/0001193125-15-212889.md) | Proxy statement, period 2015-07-16 | 0001193125-15-212889 |
| 2014-05-23 | 09:27 ET | [DEF 14A](/filings/0001193125-14-210832.md) | Proxy statement, period 2014-06-25 | 0001193125-14-210832 |
| 2013-05-22 | 15:30 ET | [DEF 14A](/filings/0001193125-13-231339.md) | Proxy statement, period 2013-06-21 | 0001193125-13-231339 |
| 2012-05-22 | 12:51 ET | [DEF 14A](/filings/0001193125-12-243051.md) | Proxy statement, period 2012-06-27 | 0001193125-12-243051 |
| 2011-05-25 | 16:13 ET | [DEF 14A](/filings/0000950123-11-053905.md) | Proxy statement, period 2011-06-30 | 0000950123-11-053905 |
| 2010-05-10 | 17:28 ET | [DEF 14A](/filings/0000950123-10-047363.md) | Proxy statement, period 2010-06-09 | 0000950123-10-047363 |
| 2009-05-18 | 18:10 ET | [DEF 14A](/filings/0000950152-09-005314.md) | Proxy statement, period 2009-06-17 | 0000950152-09-005314 |

Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:06 ET. No prices; not investment advice.