Calamos Convertible Opportunities and Income Fund
US ˙ NasdaqGS ˙ US1281171082

SecurityCHI / Calamos Convertible Opportunities and Income Fund
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership224,511 shares
Latest Disclosed Value $ 2,411,236
Advisor Group Holdings, Inc. reports 3.90% increase in ownership of CHI / Calamos Convertible Opportunities and Income Fund

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 224,511 shares of Calamos Convertible Opportunities and Income Fund (US:CHI) valued at $2,411,248 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 216,092 shares of Calamos Convertible Opportunities and Income Fund. This represents a change in shares of 3.90% during the quarter. The current value of the position is $2,858,025 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 CONV OPPORTUNITIES SH BEN INT 128117108 224,511 8,419 3.90 2,411 6.49 0.0021
2026-02-17 2025-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 216,092 -11,303 -4.97 2,265 -5.55 0.0014
2025-11-14 2025-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 227,395 23,547 11.55 2,398 11.80 0.0018
2025-09-04 2025-06-30 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 203,848 54,042 36.07 2,145 49.30 0.0038
2025-08-13 2025-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 160,881 11,075 1,919 0.0022
2025-05-12 2025-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 149,806 -30,827 -17.07 1,437 -33.40 0.0032
2025-06-06 2024-12-31 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 180,633 52,071 40.50 2,157 44.12 0.0048
2025-02-07 2024-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 100,583 -27,979 1,177 0.0030
2024-11-13 2024-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 128,562 -908 -0.70 1,496 -0.73 0.0034
2024-08-13 2024-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 129,470 -135,282 -51.10 1,507 -49.83 0.0036
2024-05-10 2024-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 264,752 12,240 4.85 3,005 14.83 0.0067
2024-02-12 2023-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 252,512 -16,926 -6.28 2,616 -7.85 0.0046
2023-11-13 2023-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 269,438 50,390 23.00 2,840 15.74 0.0042
2023-08-21 2023-06-30 13F/A-1 CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 219,048 17,265 8.56 2,453 15.60 0.0044
2023-08-10 2023-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 219,048 17,265 2,453 0.0007
2023-05-12 2023-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 201,783 2,225 1.11 2,123 1.24 0.0040
2023-02-10 2022-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 199,558 -20,592 -9.35 2,097 -1.41 0.0042
2022-11-14 2022-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 220,150 -3,268 -1.46 2,126 -11.23 0.0049
2022-08-10 2022-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 223,418 -27,766 -11.05 2,395 -27.82 0.0053
2022-05-04 2022-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 251,184 9,926 4.11 3,318 -8.97 0.0064
2022-02-03 2021-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 241,258 10,601 4.60 3,645 5.56 0.0069
2021-11-05 2021-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 230,657 18,593 8.77 3,453 7.34 0.0072
2021-08-02 2021-06-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 212,064 49,399 30.37 3,217 39.08 0.0070
2021-05-13 2021-03-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 162,665 7,202 4.63 2,313 9.88 0.0056
2021-02-10 2020-12-31 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 155,463 -730 -0.47 2,105 22.53 0.0056
2020-11-12 2020-09-30 13F CALAMOS CONV OPPORTUNITIES SH BEN INT 128117108 156,193 7,544 5.08 1,718 8.60 0.0051
2020-08-14 2020-06-30 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 148,649 -48,472 -24.59 1,582 -3.71 0.0053
2020-05-18 2020-03-31 13F CALAMOS CONV OPP AND INC FD SH BEN INT 128117108 197,121 197,121 1,643 0.0067
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.