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CHI on Nasdaq

CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND

CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND is a fund registered in the United States, based in Naperville, active since 2002.2 Its shares trade on Nasdaq under the symbol CHI.2

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Last updated Oct 21, 2026.

Overview

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  • TickerCHI on Nasdaq2
  • HeadquartersNaperville, United States2
  • Business address2020 Calamos Court, C/O Calamos Advisors Llc, Naperville, Il 605633
  • Legal formFUND2
  • Kind of organizationFund2
  • LEI549300ZBRGRX6VMFJ3152
  • StatusActive2
  • LEI statusIssued and current2
  • Registered addressC/O THE CORPORATION TRUST COMPANY, 19801 Wilmington, United States2
  • Registered withSecurities and Exchange Commission, 00011714712

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Corporate structure

CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND

  • CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND Naperville, Illinois, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Leadership

Who has led CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND, and when. Pick a name to see everywhere that person has worked.

Chief executive

  1. John P. Calamos Sr.2012

Chair

  1. John P. Calamos Sr.2006–2011

President

  1. John P. Calamos Sr.2006–2017

Chief financial officer

  1. Thomas E. Herman2016
2010201520202025
Board members and other officers (24)

Subsidiaries and ownership

Fund manager

Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

  1. May 14, 20248-K Bylaws or fiscal year changed30
  2. Dec 14, 2012New chief executive John P. Calamos Sr. becomes CEO4
  3. Apr 17, 2002Founded CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND is founded2

Filings

88 filings to the SEC since October 2021: 1 major events, 20 insider forms, 9 large holders, 58 other. The latest 20:

  1. Sep 29, 2026NPORT-P EDGAR
  2. Sep 8, 2026SCHEDULE 13G EDGAR
  3. Sep 8, 2026SCHEDULE 13G EDGAR
  4. Sep 8, 2026SCHEDULE 13G/A EDGAR
  5. Sep 4, 2026424B3 EDGAR
  6. Aug 28, 2026N-PX EDGAR
  7. Aug 27, 2026NPORT-P/A EDGAR
  8. Aug 26, 20264 EDGAR
  9. Aug 26, 20264 PRIMARY DOCUMENT EDGAR
  10. Aug 25, 2026SCHEDULE 13G/A EDGAR
  11. Jul 24, 2026N-23C-2 EDGAR
  12. Jul 2, 2026N-CSRS EDGAR
  13. Jun 26, 2026NPORT-P EDGAR
  14. Mar 31, 2026NPORT-P EDGAR
  15. Jan 13, 2026N-CEN EDGAR
  16. Dec 29, 2025N-CSR EDGAR
  17. Dec 23, 2025NPORT-P EDGAR
  18. Sep 29, 2025NPORT-P EDGAR
  19. Sep 9, 20253 PRIMARY DOCUMENT EDGAR
  20. Sep 9, 20253/A PRIMARY DOCUMENT EDGAR

The 88 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

6 open-market trades by officers, directors and large owners since October 2021: 4 buys and 2 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Aug 26, 2026MetLife Investment Management, LLC10% ownerBuy345,000$25.00$8.6MForm 4
Aug 11, 2025Mickey MarkFormerChief Compliance OfficerSale1,000$10.36$10.4KForm 4
Sep 9, 2024MetLife Investment Management, LLC10% ownerBuy840,000$25.00$21.0MForm 4
Feb 16, 2024Mickey MarkFormerChief Compliance OfficerSale500$11.07$5.5KForm 4
May 31, 2023Mickey MarkFormerChief Compliance OfficerBuy500$9.95$5.0KForm 4
May 24, 2022MetLife Investment Management, LLC10% ownerBuy680,000$25.00$17.0MForm 4

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Bank Of America Corp /de/2,883,914$38.8M0.0%+254,277
UBS Group AG2,574,530$34.6M0.0%+196,134
Morgan Stanley1,551,031$20.8M0.0%+137,555
Wells Fargo & Company/mn1,362,840$18.3M0.0%+4,247
D.a. Davidson & Co.1,105,418$14.9M0.1%+8,168
LPL Financial LLC700,766$9.4M0.0%+27,068
Guggenheim Capital LLC643,309$8.6M0.1%+33,833
Ameriprise Financial Inc640,127$8.6M0.0%−3,194
Baird Financial Group, Inc.613,861$8.3M0.0%+22,625
Commonwealth Equity Services, LLC563,686$7.6M0.0%−1,373
Advisors Asset Management, Inc.533,895$7.2M0.1%+202,941
Marathon Strategic Advisors, LLC293,821$3.9M2.2%+5,494
Raymond James Financial Inc288,924$3.9M0.0%−12,756
Harbour Investments, Inc.273,702$3.7M0.0%−1,759
Osaic Holdings, Inc.259,047$3.5M0.0%+34,536
Creekside Partners237,856$3.2M1.2%+8,666
Oppenheimer & Co Inc237,341$3.2M0.0%+11,028
Royal Bank Of Canada222,047$3.0M0.0%+2,248
Samalin Investment Counsel, LLC206,445$2.8M0.9%+60,096
Cetera Investment Advisers183,537$2.5M0.0%−3,033
NewEdge Advisors, LLC168,723$2.3M0.0%+50,322
Rockefeller Capital Management L.P.154,322$2.1M0.0%−1,258
Grange Capital, LLC146,012$2.0M1.8%−148,404
Focus Partners Wealth141,775$1.9M0.0%−1,450
Everstar Asset Management, LLC111,723$1.5M0.7%No change

13F reports cover disclosed long positions in U.S. stocks only.

SEC filer profile

How CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARCALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND1
  • CIK0001171471
  • Employer ID (EIN)03-04265321
  • Fiscal year endsOctober 311
  • Business address2020 Calamos Court, C/O Calamos Advisors Llc, Naperville, IL 605631
  • Phone63024510461
  • On EDGAR sinceApr 19, 20021
  • Filings495 in all: 3 (37), 497 (35), N-Q (30), 5 (29), NPORT-P (28), 4 (24), DEF 14A (24), N-CSR (24)1
    All 56 form types

    N-CSRS (23), N-PX (23), 40-17G (22), NSAR-B (16), CORRESP (15), NSAR-A (15), N-2/A (12), SC 13G/A (12), 424B3 (11), 40-33 (10), 40-17G/A (9), 486BPOS (9), SC 13G (9), N-CEN (8), N-2 (7), POS EX (7), EFFECT (6), 40-APP/A (5), N-23C-2 (5), 424B5 (3), 8-K (3), 3/A (2), 4/A (2), 8-A12B (2), N-2ASR (2), POS 8C (2), SCHEDULE 13G (2), SCHEDULE 13G/A (2), 25 (1), 40-6C (1), 40-6C/A (1), 40-APP (1), APP NTC (1), APP ORDR (1), CERTNAS (1), CERTNYS (1), N-2 POSASR (1), N-30D (1), N-8A (1), N-CEN/A (1), N-CSR/A (1), NO ACT (1), NPORT-EX (1), NPORT-P/A (1), NSAR-A/A (1), NSAR-B/A (1), SC 13D (1), UPLOAD (1)

  • Latest filingsProxy statement (DEF 14A) May 11, 2026
    Latest 8-K (8-K) May 14, 2024

Sources

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