Calamos Convertible and High Income Fund
US ˙ NasdaqGS ˙ US12811P1084

SecurityCHY / Calamos Convertible and High Income Fund
InstitutionCohen & Steers, Inc.
Latest Disclosed Ownership502,484 shares
Latest Disclosed Value $ 5,472
Cohen & Steers, Inc. reports 32.24% increase in ownership of CHY / Calamos Convertible and High Income Fund

On May 15, 2026 - Cohen & Steers, Inc. filed a 13F-HR form disclosing ownership of 502,484 shares of Calamos Convertible and High Income Fund (US:CHY) valued at $5,472,051 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 379,984 shares of Calamos Convertible and High Income Fund. This represents a change in shares of 32.24% during the quarter. The current value of the position is $6,652,888 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 & High Income Fund COM 12811P108 502,484 122,500 32.24 5 25.00 0.0095
2026-02-13 2025-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 379,984 38,000 11.11 4 33.33 0.0078
2025-11-14 2025-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 341,984 101,000 41.91 4 50.00 0.0069
2025-08-14 2025-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 240,984 106,100 78.66 3 100.00 0.0049
2025-05-15 2025-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 134,884 0 0.00 1 0.00 0.0025
2025-02-13 2024-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 134,884 -135,000 -50.02 2 -66.67 0.0031
2024-11-14 2024-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 269,884 -60,000 -18.19 3 0.00 0.0057
2024-08-13 2024-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 0.00 0.0077
2024-05-15 2024-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 0.00 0.0082
2024-02-14 2023-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 0.00 0.0077
2023-11-14 2023-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 0.00 0.0085
2023-08-14 2023-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 0.00 0.0078
2023-05-15 2023-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 4 -99.91 0.0078
2023-02-14 2022-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 3,480 4.54 0.0077
2022-11-14 2022-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 3,329 -9.66 0.0074
2022-08-15 2022-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 0 0.00 3,685 -20.50 0.0072
2022-05-16 2022-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 329,884 15,000 4.76 4,635 -9.03 0.0078
2022-02-14 2021-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 314,884 0 0.00 5,095 3.51 0.0083
2021-11-15 2021-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 314,884 -50,000 -13.70 4,922 -17.35 0.0092
2021-08-16 2021-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 364,884 -174,275 -32.32 5,955 -25.92 0.0113
2021-05-17 2021-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 539,159 -640,621 -54.30 8,039 -52.28 0.0172
2021-02-16 2020-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 1,179,780 164,065 16.15 16,847 42.13 0.0405
2020-11-16 2020-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 1,015,715 184,029 22.13 11,853 25.68 0.0316
2020-08-14 2020-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 831,686 45,724 5.82 9,431 35.74 0.0263
2020-05-15 2020-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 785,962 101,758 14.87 6,948 -10.92 0.0224
2020-02-14 2019-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 684,204 52,085 8.24 7,800 12.18 0.0194
2019-11-14 2019-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 632,119 0 0.00 6,953 -0.27 0.0174
2019-08-14 2019-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 632,119 173,948 37.97 6,972 40.25 0.0193
2019-05-15 2019-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 458,171 12,720 2.86 4,971 18.72 0.0138
2019-02-14 2018-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 445,451 0 0.00 4,187 -29.17 0.0133
2018-11-16 2018-09-30 13F/A-1 Calamos Convertible & High Income Fund COM 12811P108 445,451 -42,600 -8.73 5,911 -4.94 0.0172
2018-11-14 2018-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 445,451 -42,600 5,911
2018-08-14 2018-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 488,051 8,807 1.84 6,218 10.90 0.0178
2018-05-14 2018-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 479,244 1,471 0.31 5,607 -0.97 0.0172
2018-02-14 2017-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 477,773 5,064 1.07 5,662 0.66 0.0156
2017-11-14 2017-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 472,709 32,700 7.43 5,625 7.97 0.0153
2017-08-14 2017-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 440,009 57,485 15.03 5,210 19.58 0.0138
2017-05-15 2017-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 382,524 69,513 22.21 4,357 31.95 0.0117
2017-02-14 2016-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 313,011 0 0.00 3,302 -4.18 0.0091
2016-11-14 2016-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 313,011 126,867 68.16 3,446 74.48 0.0088
2016-08-22 2016-06-30 13F/A-2 Calamos Convertible & High Income Fund COM 12811P108 186,144 56,542 43.63 1,975 46.62 0.0051
2016-08-18 2016-06-30 13F/A-1 Calamos Convertible & High Income Fund COM 12811P108 215,850 29,706 28,471 0.0746
2016-08-15 2016-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 186,144 1,975
2016-05-16 2016-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 129,602 31,000 31.44 1,347 30.02 0.0037
2016-02-16 2015-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 98,602 0 0.00 1,036 -3.36 0.0030
2015-11-16 2015-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 98,602 13,449 15.79 1,072 -5.30 0.0032
2015-08-14 2015-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 85,153 -15,000 -14.98 1,132 -20.23 0.0034
2015-05-15 2015-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 100,153 -15,967 -13.75 1,419 -11.64 0.0038
2015-02-17 2014-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 116,120 -52,479 -31.13 1,606 -32.83 0.0222
2014-11-14 2014-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 168,599 1,361 0.81 2,391 -3.39 0.0072
2014-08-14 2014-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 167,238 0 0.00 2,475 9.80 0.0071
2014-05-15 2014-03-31 13F Calamos Convertible & High Income Fund COM 12811P108 167,238 0 0.00 2,254 4.26 0.0068
2014-02-14 2013-12-31 13F Calamos Convertible & High Income Fund COM 12811P108 167,238 3,111 1.90 2,162 5.10 0.0071
2013-11-14 2013-09-30 13F Calamos Convertible & High Income Fund COM 12811P108 164,127 14,097 9.40 2,057 10.65 0.0066
2013-08-14 2013-06-30 13F Calamos Convertible & High Income Fund COM 12811P108 150,030 150,030 1,859 0.0058
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.