Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership664 shares
Latest Disclosed Value $ 7,131
Advisory Services Network, LLC ownership in CHI / Calamos Convertible Opportunities and Income Fund

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 664 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $7,131 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Calamos Convertible Opportunities and Income Fund. The current value of the position is $8,453 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 OPPS & INCOME CEF CEF 128117108 664 664 7 0.0001
2026-02-17 2025-12-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 0 -664 -100.00 0 -100.00
2025-11-18 2025-09-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 664 664 7 0.0001
2024-05-06 2024-03-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 0 -664 -100.00 0 -100.00
2024-02-09 2023-12-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 664 -18,626 -96.56 7 -97.04 0.0002
2023-11-14 2023-09-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 19,290 -505 -2.55 203 -8.14 0.0055
2023-08-09 2023-06-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 19,795 -119 -0.60 222 5.74 0.0059
2023-05-17 2023-03-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 19,914 278 1.42 209 1.46 0.0058
2023-02-13 2022-12-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 19,636 -2,687 -12.04 206 -4.63 0.0063
2022-11-14 2022-09-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 22,323 3,058 15.87 216 4.35 0.0076
2022-08-02 2022-06-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 19,265 866 4.71 207 -14.81 0.0071
2022-05-23 2022-03-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 18,399 -2,443 -11.72 243 -22.86 0.0072
2022-02-14 2021-12-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 20,842 -2,090 -9.11 315 -8.16 0.0091
2021-11-05 2021-09-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 22,932 4,318 23.20 343 21.63 0.0109
2021-08-12 2021-06-30 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 18,614 1,941 11.64 282 18.99 0.0089
2021-05-24 2021-03-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 16,673 6,488 63.70 237 71.74 0.0088
2021-02-09 2020-12-31 13F CALAMOS CONV OPPORTUNITIES CEF 128117108 10,185 10,185 138 0.0055
2018-07-27 2018-06-30 13F CALAMOS CONV OPP AND INC FD CEF 128117108 0 -3,618 -100.00 0 -100.00
2018-04-23 2018-03-31 13F CALAMOS CONV OPP AND INC FD CEF 128117108 3,618 -909 -20.08 40 -21.57 0.0032
2018-02-08 2017-12-31 13F CALAMOS CONV OPP AND INC FD CEF 128117108 4,527 1,060 30.57 51 27.50 0.0044
2017-10-12 2017-09-30 13F CALAMOS CONV OPP AND INC FD CEF 128117108 3,467 1,325 61.86 40 66.67 0.0046
2017-08-17 2017-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT CEF 128117108 2,142 339 18.80 24 20.00 0.0031
2017-04-28 2017-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT CEF 128117108 1,803 75 4.34 20 11.11 0.0029
2016-10-07 2016-09-30 13F CALAMOS CONV OPP AND INC FD CEF 128117108 1,728 1,169 209.12 18 260.00 0.0034
2016-07-27 2016-06-30 13F CALAMOS CONV OPP AND INC FD CEF 128117108 559 559 5 0.0011
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.