Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionCohen & Steers, Inc.
Latest Disclosed Ownership55,000 shares
Latest Disclosed Value $ 591
Cohen & Steers, Inc. ownership in CHI / Calamos Convertible Opportunities and Income Fund

On May 15, 2026 - Cohen & Steers, Inc. filed a 13F-HR form disclosing ownership of 55,000 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $590,700 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2024 disclosing 0 shares of Calamos Convertible Opportunities and Income Fund. The current value of the position is $700,150 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)
2026-05-15 2026-03-31 13F Calamos Convertible Opp& COM 128117108 55,000 55,000 1 0.0010
2024-11-14 2024-09-30 13F Calamos Convertible Opp& COM 128117108 0 -372,278 -100.00 0 -100.00
2024-08-13 2024-06-30 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 0.00 0.0091
2024-05-15 2024-03-31 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 33.33 0.0088
2024-02-14 2023-12-31 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 0.00 0.0078
2023-11-14 2023-09-30 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 -25.00 0.0090
2023-08-14 2023-06-30 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 33.33 0.0088
2023-05-15 2023-03-31 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 4 -99.92 0.0085
2023-02-14 2022-12-31 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 3,913 8.82 0.0086
2022-11-14 2022-09-30 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 3,596 -9.90 0.0080
2022-08-15 2022-06-30 13F Calamos Convertible Opp& COM 128117108 372,278 0 0.00 3,991 -18.78 0.0078
2022-05-16 2022-03-31 13F Calamos Convertible Opp& COM 128117108 372,278 15,000 4.20 4,914 -8.97 0.0082
2022-02-14 2021-12-31 13F Calamos Convertible Opp& COM 128117108 357,278 0 0.00 5,398 0.93 0.0088
2021-11-15 2021-09-30 13F Calamos Convertible Opp& COM 128117108 357,278 -58,000 -13.97 5,348 -15.11 0.0100
2021-08-16 2021-06-30 13F Calamos Convertible Opp& COM 128117108 415,278 -144,747 -25.85 6,300 -20.89 0.0120
2021-05-17 2021-03-31 13F Calamos Convertible Opp& COM 128117108 560,025 -638,988 -53.29 7,964 -50.95 0.0171
2021-02-16 2020-12-31 13F Calamos Convertible Opp& COM 128117108 1,199,013 326,162 37.37 16,235 68.94 0.0390
2020-11-16 2020-09-30 13F Calamos Convertible Opp& COM 128117108 872,851 172,216 24.58 9,610 28.91 0.0256
2020-08-14 2020-06-30 13F Calamos Convertible Opp& COM 128117108 700,635 0 0.00 7,455 27.59 0.0208
2020-05-15 2020-03-31 13F Calamos Convertible Opp& COM 128117108 700,635 140,507 25.08 5,843 -5.16 0.0189
2020-02-14 2019-12-31 13F Calamos Convertible Opp& COM 128117108 560,128 20,323 3.76 6,161 9.65 0.0153
2019-11-14 2019-09-30 13F Calamos Convertible Opp& COM 128117108 539,805 143,738 36.29 5,619 35.04 0.0141
2019-08-14 2019-06-30 13F Calamos Convertible Opp& COM 128117108 396,067 380,547 2,451.98 4,161 2,550.32 0.0115
2019-05-15 2019-03-31 13F Calamos Convertible Opp& COM 128117108 15,520 15,520 157 0.0004
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.