Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionMutual Advisors, LLC
Latest Disclosed Ownership51,577 shares
Latest Disclosed Value $ 553,937
Mutual Advisors, LLC reports 76.87% increase in ownership of CHI / Calamos Convertible Opportunities and Income Fund

On May 1, 2026 - Mutual Advisors, LLC filed a 13F-HR form disclosing ownership of 51,577 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $553,937 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 29,161 shares of Calamos Convertible Opportunities and Income Fund. This represents a change in shares of 76.87% during the quarter. The current value of the position is $656,575 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-01 2026-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 51,577 22,416 76.87 554 81.31 0.0119
2026-02-02 2025-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 29,161 12,647 76.58 306 67.58 0.0065
2025-11-04 2025-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 16,514 16,514 183 0.0040
2023-11-13 2023-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 0 -62,997 -100.00 0 -100.00
2023-07-31 2023-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 62,997 -6,105 -8.83 706 -2.89 0.0268
2023-04-11 2023-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 69,102 -10,550 -13.25 727 -13.26 0.0298
2023-01-12 2022-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 79,652 -495 -0.62 837 8.14 0.0375
2022-11-03 2022-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 80,147 -991 -1.22 774 -11.03 0.0398
2022-08-15 2022-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 81,138 11,079 15.81 870 -5.95 0.0576
2022-05-09 2022-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 70,059 -24,175 -25.65 925 -35.04 0.0518
2022-02-14 2021-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 94,234 1,164 1.25 1,424 2.23 0.0754
2021-11-15 2021-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 93,070 -5,452 -5.53 1,393 -6.82 0.0824
2021-08-12 2021-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 98,522 -9,911 -9.14 1,495 -3.05 0.0887
2021-05-13 2021-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 108,433 4,043 3.87 1,542 9.13 0.1055
2021-02-11 2020-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 104,390 4,964 4.99 1,413 29.16 0.1050
2020-11-13 2020-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 99,426 2,008 2.06 1,094 5.50 0.0949
2020-08-05 2020-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 97,418 6,439 7.08 1,037 36.63 0.1019
2020-05-13 2020-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 90,979 7,636 9.16 759 -17.23 0.1030
2020-02-11 2019-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 83,343 -10,442 -11.13 917 -6.05 0.0975
2019-11-01 2019-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 93,785 523 0.56 976 -0.41 0.1289
2019-08-15 2019-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 93,262 14,204 17.97 980 22.19 0.1273
2019-05-15 2019-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 79,058 3,393 4.48 802 19.70 0.1188
2019-02-15 2018-12-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 75,665 13,891 22.49 670 -9.95 0.1320
2018-11-15 2018-09-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 61,774 23,178 60.05 744 63.52 0.1129
2018-08-15 2018-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 38,596 38,596 455 0.1037
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.