Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionPinnacle Associates Ltd
Latest Disclosed Ownership16,433 shares
Latest Disclosed Value $ 176,490
Pinnacle Associates Ltd ownership in CHI / Calamos Convertible Opportunities and Income Fund

On April 21, 2026 - Pinnacle Associates Ltd filed a 13F-HR form disclosing ownership of 16,433 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $176,490 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 16,433 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 $209,192 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.

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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)
2026-04-21 2026-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,433 0 0.00 176 2.33 0.0023
2026-02-05 2025-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,433 0 0.00 172 -2.82 0.0022
2025-11-13 2025-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,433 0 0.00 177 2.91 0.0024
2025-08-04 2025-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,433 1,493 9.99 173 20.28 0.0025
2025-05-06 2025-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 14,940 -100 -0.66 143 -20.11 0.0021
2025-02-14 2024-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 15,040 -2,092 -12.21 180 1.13 0.0024
2024-10-25 2024-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,132 3,732 27.85 177 14.19 0.0030
2024-07-30 2024-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 13,400 0 0.00 156 1.97 0.0024
2024-04-26 2024-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 13,400 -3,732 -21.78 152 -14.12 0.0024
2024-01-19 2023-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,132 20 0.12 177 -1.67 0.0030
2023-10-24 2023-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,112 56 0.33 180 -5.76 0.0034
2023-07-27 2023-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,056 56 0.33 191 7.30 0.0033
2023-05-05 2023-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 179 0.00 0.0037
2023-02-01 2022-12-31 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 179 8.54 0.0039
2023-01-25 2022-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 190 0.0000
2022-11-01 2022-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 164 -9.89 0.0038
2022-08-02 2022-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 182 -19.11 0.0040
2022-05-05 2022-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 225 -12.45 0.0040
2022-02-02 2021-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 257 1.18 0.0044
2021-10-19 2021-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 254 -1.55 0.0047
2021-08-02 2021-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 258 6.61 0.0047
2021-05-12 2021-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 0 0.00 242 5.22 0.0046
2021-01-26 2020-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 17,000 600 3.66 230 27.78 0.0047
2020-10-23 2020-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,400 3,000 22.39 180 25.87 0.0043
2020-08-14 2020-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 13,400 0 0.00 143 27.68 0.0035
2020-05-13 2020-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 13,400 0 0.00 112 -23.81 0.0034
2020-02-03 2019-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 13,400 -600 -4.29 147 0.68 0.0032
2019-11-08 2019-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 14,000 -33,600 -70.59 146 -70.80 0.0034
2019-08-05 2019-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 47,600 -1,300 -2.66 500 0.81 0.0117
2019-05-10 2019-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 48,900 -2,250 -4.40 496 9.49 0.0112
2019-02-05 2018-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 51,150 0 0.00 453 -26.46 0.0117
2018-11-09 2018-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 51,150 -400 -0.78 616 1.32 0.0128
2018-08-08 2018-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 51,550 -200 -0.39 608 5.92 0.0125
2018-05-11 2018-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 51,750 -3,200 -5.82 574 -6.67 0.0112
2018-02-12 2017-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 54,950 -3,150 -5.42 615 -8.21 0.0118
2017-11-13 2017-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 58,100 -300 -0.51 670 1.82 0.0124
2017-08-09 2017-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 58,400 -50 -0.09 658 2.33 0.0126
2017-05-09 2017-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 58,450 -4,300 -6.85 643 1.58 0.0123
2017-02-10 2016-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 62,750 -100 -0.16 633 -2.47 0.0128
2016-11-14 2016-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 62,850 500 0.80 649 5.87 0.0130
2016-08-15 2016-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 62,350 3,327 5.64 613 9.46 0.0132
2016-05-13 2016-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 59,023 800 1.37 560 -2.95 0.0120
2016-02-11 2015-12-31 13F/A-1 CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 58,223 -18,050 -23.66 577 -23.47 0.0121
2016-02-09 2015-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 58,223 -18,050 577 0.0123
2015-11-10 2015-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 76,273 -500 -0.65 754 -19.53 0.0167
2015-08-12 2015-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 76,773 700 0.92 937 -5.07 0.0174
2015-05-15 2015-03-31 13F Calamos Convertible Opp& COM 128117108 76,073 0 0.00 987 1.02 0.0184
2015-02-12 2014-12-31 13F Calamos Convertible Opp& COM 128117108 76,073 8,075 11.88 977 6.20 0.0192
2014-11-12 2014-09-30 13F Calamos Convertible Opp& COM 128117108 67,998 27,673 68.62 920 62.54 0.0187
2014-08-14 2014-06-30 13F Calamos Convertible Opp& COM 128117108 40,325 6,300 18.52 566 20.43 0.0110
2014-05-14 2014-03-31 13F Calamos Convertible Opp& COM 128117108 34,025 9,025 36.10 470 41.57 0.0092
2014-02-12 2013-12-31 13F Calamos Convertible Opp& COM 128117108 25,000 0 0.00 332 5.40 0.0065
2013-11-14 2013-09-30 13F Calamos Convertible Opp& COM 128117108 25,000 0 0.00 315 0.00 0.0065
2013-08-13 2013-06-30 13F Calamos Convertible Opp& COM 128117108 25,000 25,000 315 0.0071
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.