Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionNwam Llc
Latest Disclosed Ownership12,911 shares
Latest Disclosed Value $ 138,664
Nwam Llc reports 3.64% decrease in ownership of CHI / Calamos Convertible Opportunities and Income Fund

On May 4, 2026 - Nwam Llc filed a 13F-HR form disclosing ownership of 12,911 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $138,664 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 13,399 shares of Calamos Convertible Opportunities and Income Fund. This represents a change in shares of -3.64% during the quarter. The current value of the position is $164,357 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)
2026-05-04 2026-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 12,911 -488 -3.64 139 -6.76 0.0080
2026-02-04 2025-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 13,399 1,506 12.66 148 13.85 0.0083
2026-02-04 2025-09-30 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 11,893 11,893 131 0.0071
2025-10-28 2025-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 11,893 11,893 129 0.0091
2024-11-12 2024-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 0 -13,383 -100.00 0 -100.00
2024-07-24 2024-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 13,383 2,800 26.46 156 30.25 0.0458
2024-05-09 2024-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 10,583 300 2.92 119 12.26 0.0096
2024-02-14 2023-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 10,283 10,283 107 0.0086
2021-04-23 2021-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 0 -21,155 -100.00 0 -100.00
2021-01-22 2020-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 21,155 -2,755 -11.52 286 8.75 0.0326
2020-10-16 2020-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 23,910 0 0.00 263 3.54 0.0434
2020-07-21 2020-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 23,910 -401 -1.65 254 25.12 0.0356
2020-04-16 2020-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 24,311 -1,862 -7.11 203 -29.51 0.0055
2020-01-23 2019-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 26,173 1,545 6.27 288 12.50 0.0498
2019-10-15 2019-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 24,628 -5,565 -18.43 256 -19.24 0.0479
2019-07-18 2019-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 30,193 1,758 6.18 317 10.07 0.0631
2019-04-17 2019-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 28,435 812 2.94 288 17.55 0.0621
2019-01-30 2018-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 27,623 -2,843 -9.33 245 -33.24 0.0629
2018-10-09 2018-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 30,466 -71 -0.23 367 1.94 0.0825
2018-07-25 2018-06-30 13F/A-1 CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 30,537 -42 -0.14 360 6.19 0.0853
2018-07-16 2018-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 30,537 -42 360 0.0295
2018-04-16 2018-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 30,579 2,965 10.74 339 9.71 0.0856
2018-02-07 2017-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 27,614 3,473 14.39 309 11.15 0.0783
2017-11-01 2017-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 24,141 1,088 4.72 278 6.92 0.0723
2017-07-27 2017-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 23,053 1,828 8.61 260 11.59 0.0452
2017-05-01 2017-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 21,225 4,000 23.22 233 33.91 0.0711
2017-02-02 2016-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 17,225 -1,782 -9.38 174 -11.22 0.0577
2016-10-26 2016-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 19,007 19,007 196 0.0149
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.