Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionCX Institutional
Latest Disclosed Ownership1,547 shares
Latest Disclosed Value $ 17
CX Institutional reports 28.91% decrease in ownership of CHI / Calamos Convertible Opportunities and Income Fund

On April 6, 2026 - CX Institutional filed a 13F-HR form disclosing ownership of 1,547 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $16,615 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 2,176 shares of Calamos Convertible Opportunities and Income Fund. The current value of the position is $19,693 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)
2026-04-06 2026-03-31 13F Calamos Funds ETP 128117108 1,547 -629 -28.91 0 0.0005
2026-02-02 2025-12-31 13F Calamos Funds ETP 128117108 2,176 -7,245 -76.90 0 0.0007
2025-10-23 2025-09-30 13F Calamos Funds ETP 128117108 9,421 9,421 0 0.0031
2024-07-11 2024-06-30 13F Calamos Convertible Opps & income SH BEN INT 128117108 0 -20,502 -100.00 0 -100.00
2024-04-15 2024-03-31 13F Calamos Convertible Opps & income SH BEN INT 128117108 20,502 0 0.00 233 9.43 0.0112
2024-01-12 2023-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 20,502 0 0.00 212 -1.85 0.0114
2023-10-18 2023-09-30 13F Calamos Convertible Opps & income SH BEN INT 128117108 20,502 0 0.00 216 -5.68 0.0119
2023-07-26 2023-06-30 13F CALAMOS CONVERTIBLE OPPORTUNIT SH BEN INT SH BEN INT 128117108 20,502 0 0.00 230 6.51 0.0119
2023-05-04 2023-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 20,502 0 0.00 215 0.00 0.0115
2023-02-03 2022-12-31 13F CALAMOS CONVERTIBLE OPPORTUNIT SH BEN INT SH BEN INT 128117108 20,502 0 0.00 215 8.59 0.0131
2022-11-04 2022-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 20,502 0 0.00 198 -10.00 0.0137
2022-08-02 2022-06-30 13F Calamos Funds ETP 128117108 20,502 0 0.00 220 -18.82 0.0166
2022-05-09 2022-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 20,502 31 0.15 271 -12.30 0.0217
2022-01-18 2021-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 20,471 4,971 32.07 309 33.19 0.0246
2021-11-10 2021-09-30 13F CALAMOS OPP& ETP 128117108 15,500 0 0.00 232 -1.28 0.0190
2021-08-04 2021-06-30 13F CALAMOS OPP& ETP 128117108 15,500 15,500 235 0.0193
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.