Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionCENTRAL TRUST Co
Latest Disclosed Ownership33,400 shares
Latest Disclosed Value $ 358,716
CENTRAL TRUST Co ownership in CHI / Calamos Convertible Opportunities and Income Fund

On April 17, 2026 - CENTRAL TRUST Co filed a 13F-HR form disclosing ownership of 33,400 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $358,716 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 33,400 shares of Calamos Convertible Opportunities and Income Fund. This represents a change in shares of 0.00% during the quarter. The current value of the position is $425,182 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-17 2026-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 33,400 0 0.00 359 2.29 0.0038
2026-02-02 2025-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 33,400 -880 -2.57 350 -5.15 0.0069
2025-11-06 2025-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 34,280 -4,573 -11.77 370 -9.56 0.0077
2025-08-07 2025-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 38,853 -3,630 -8.54 409 0.25 0.0094
2025-04-18 2025-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 42,483 -1,500 -3.41 407 -22.48 0.0100
2025-01-24 2024-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 43,983 -10,050 -18.60 525 -16.40 0.0129
2024-10-22 2024-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 54,033 -1,650 -2.96 629 -3.09 0.0147
2024-08-05 2024-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 55,683 -2,075 -3.59 648 -1.07 0.0159
2024-04-24 2024-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 57,758 -525 -0.90 656 8.62 0.0163
2024-01-24 2023-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 58,283 -2,600 -4.27 604 -5.93 0.0160
2023-10-26 2023-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 60,883 -1,555 -2.49 642 -8.30 0.0185
2023-07-26 2023-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 62,438 -500 -0.79 699 5.59 0.0195
2023-04-19 2023-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 62,938 -2,300 -3.53 662 -3.36 0.0194
2023-01-26 2022-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 65,238 0 0.00 686 8.73 0.0211
2022-11-17 2022-09-30 13F/A-2 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 65,238 -300 -0.46 630 -10.26 0.0216
2022-11-04 2022-09-30 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 65,538 0 702 0.0126
2022-11-03 2022-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 65,538 0 702 0.0126
2022-08-09 2022-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 65,538 -700 -1.06 702 -19.77 0.0232
2022-05-03 2022-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 66,238 -700 -1.05 875 -13.54 0.0250
2022-02-08 2021-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 66,938 0 0.00 1,012 1.00 0.0285
2021-10-19 2021-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 66,938 0 0.00 1,002 -1.28 0.0357
2021-07-23 2021-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 66,938 0 0.00 1,015 6.62 0.0368
2021-04-23 2021-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 66,938 -125 -0.19 952 4.85 0.0372
2021-01-29 2020-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 67,063 0 0.00 908 23.20 0.0371
2020-10-22 2020-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 67,063 0 0.00 737 3.22 0.0334
2020-07-14 2020-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 67,063 -7,775 -10.39 714 14.24 0.0358
2020-04-17 2020-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 74,838 -540 -0.72 625 -24.61 0.0383
2020-01-21 2019-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 75,378 200 0.27 829 6.01 0.0424
2019-10-28 2019-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 75,178 -4,050 -5.11 782 -8.00 0.0441
2019-07-12 2019-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 79,228 -8,615 -9.81 850 -4.60 0.0484
2019-04-26 2019-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 87,843 -83,891 -48.85 891 -41.46 0.0531
2019-01-08 2018-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 171,734 -17,835 -9.41 1,522 -33.30 0.1012
2018-10-04 2018-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 189,569 -4,963 -2.55 2,282 -0.48 0.1327
2018-07-09 2018-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 194,532 -15,000 -7.16 2,293 -1.38 0.1462
2018-04-04 2018-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 209,532 -8,790 -4.03 2,325 -4.83 0.1476
2018-01-23 2017-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 218,322 -9,175 -4.03 2,443 -6.86 0.1487
2017-10-17 2017-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 227,497 3,408 1.52 2,623 3.92 0.1696
2017-07-14 2017-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 224,089 393 0.18 2,524 2.60 0.1669
2017-04-06 2017-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 223,696 900 0.40 2,460 9.43 0.1637
2017-01-24 2016-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 222,796 -11,500 -4.91 2,248 -7.11 0.1548
2016-10-24 2016-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 234,296 29,715 14.52 2,420 20.34 0.1765
2016-08-08 2016-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 204,581 -11,450 -5.30 2,011 -1.90 0.1504
2016-04-11 2016-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 216,031 -21,579 -9.08 2,050 -12.95 0.1618
2016-01-21 2015-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 237,610 -14,339 -5.69 2,355 -5.46 0.1945
2015-10-14 2015-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 251,949 -6,075 -2.35 2,491 -20.95 0.2167
2015-07-28 2015-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 258,024 1,225 0.48 3,151 -5.49 0.2477
2015-04-09 2015-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 256,799 16,793 7.00 3,334 8.21 0.2683
2015-01-16 2014-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 240,006 3,257 1.38 3,081 -3.81 0.2510
2014-10-23 2014-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 236,749 7,777 3.40 3,203 1.30 0.2545
2014-05-07 2014-03-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 228,972 6,479 2.91 3,162 7.19 0.2614
2014-01-27 2013-12-31 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 222,493 12,225 5.81 2,950 11.32 0.2474
2013-10-24 2013-09-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 210,268 -40,855 -16.27 2,650 -16.32 0.2400
2013-08-13 2013-06-30 13F CALAMOS CONV OPPORTUNITIES MUTUAL FUNDS - 128117108 251,123 251,123 3,167 0.3006
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.