Calamos Convertible and High Income Fund
US ˙ NasdaqGS ˙ US12811P1084

SecurityCHY / Calamos Convertible and High Income Fund
InstitutionStifel Financial Corp
Latest Disclosed Ownership59,754 shares
Latest Disclosed Value $ 650,729
Stifel Financial Corp reports 5.77% decrease in ownership of CHY / Calamos Convertible and High Income Fund

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 59,754 shares of Calamos Convertible and High Income Fund (US:CHY) valued at $650,721 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 63,416 shares of Calamos Convertible and High Income Fund. This represents a change in shares of -5.77% during the quarter. The current value of the position is $791,143 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)
2026-05-12 2026-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 59,754 -3,662 -5.77 651 -9.34 0.0006
2026-02-13 2025-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 63,416 -250 -0.39 717 0.42 0.0006
2025-11-12 2025-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 63,666 -6,901 -9.78 714 -7.87 0.0007
2025-08-14 2025-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 70,567 6,136 9.52 776 19.23 0.0008
2025-05-14 2025-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 64,431 5,535 9.40 651 -9.09 0.0007
2025-02-13 2024-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 58,896 428 0.73 715 2.58 0.0007
2024-11-14 2024-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 58,468 807 1.40 698 8.40 0.0007
2024-08-13 2024-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 57,661 -5,068 -8.08 643 -13.11 0.0007
2024-05-14 2024-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 62,729 2,838 4.74 741 7.87 0.0008
2024-02-12 2023-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 59,891 -65 -0.11 687 2.54 0.0009
2023-11-13 2023-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 59,956 3,926 7.01 669 6.36 0.0009
2023-08-14 2023-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 56,030 11,855 26.84 629 30.50 0.0009
2023-05-12 2023-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 44,175 -7,075 -13.80 482 -10.74 0.0007
2023-02-13 2022-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 51,250 8,862 20.91 541 26.17 0.0008
2022-11-14 2022-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 42,388 2,512 6.30 428 -3.82 0.0007
2022-08-15 2022-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 39,876 -842 -2.07 445 -22.47 0.0007
2022-05-13 2022-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 40,718 -15,449 -27.51 574 -36.85 0.0008
2022-02-14 2021-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 56,167 8,955 18.97 909 23.17 0.0012
2021-11-15 2021-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 47,212 537 1.15 738 -3.15 0.0011
2021-08-13 2021-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 46,675 -12,473 -21.09 762 -13.61 0.0011
2021-05-14 2021-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 59,148 11,513 24.17 882 29.71 0.0015
2021-02-12 2020-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 47,635 14,678 44.54 680 76.62 0.0012
2020-11-16 2020-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 32,957 -4,214 -11.34 385 -8.77 0.0008
2020-08-14 2020-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 37,171 3,008 8.80 422 40.67 0.0010
2020-05-14 2020-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 34,163 -4,314 -11.21 300 -31.82 0.0008
2020-02-13 2019-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 38,477 1,928 5.28 440 8.64 0.0009
2019-11-19 2019-09-30 13F/A-1 CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 36,549 -1,396 -3.68 405 -3.57 0.0010
2019-11-13 2019-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 36,549 -1,396 405 227.0228
2019-08-14 2019-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 37,945 -8,273 -17.90 420 -16.17 0.0011
2019-05-14 2019-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 46,218 -1,056 -2.23 501 11.83 0.0014
2019-02-13 2018-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 47,274 -3,712 -7.28 448 -33.92 0.0014
2018-11-13 2018-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 50,986 -6,869 -11.87 678 -8.38 0.0019
2018-08-14 2018-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 57,855 -2,376 -3.94 740 4.96 0.0023
2018-05-11 2018-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 60,231 7,825 14.93 705 13.71 0.0022
2018-02-14 2017-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 52,406 4,271 8.87 620 7.64 0.0020
2017-11-13 2017-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 48,135 -1,750 -3.51 576 -2.54 0.0020
2017-08-14 2017-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 49,885 4,066 8.87 591 13.44 0.0022
2017-05-10 2017-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 45,819 1,280 2.87 521 11.56 0.0020
2017-02-16 2016-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 44,539 -3,601 -7.48 467 -12.22 0.0020
2016-11-15 2016-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 48,140 -15,699 -24.59 532 -21.53 0.0024
2016-08-17 2016-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 63,839 15,264 31.42 678 34.26 0.0031
2016-05-16 2016-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 48,575 31,781 189.24 505 185.31 0.0027
2016-03-21 2015-12-31 13F/A-2 CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 16,794 -116 -0.69 177 -3.80 0.0009
2016-02-26 2015-12-31 13F/A-1 CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 16,794 0 177 0.0009
2016-02-16 2015-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 16,794 177
2015-11-16 2015-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 16,910 -3,976 -19.04 184 -33.09 0.0010
2015-08-17 2015-06-30 13F/A-1 CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 20,886 1,938 10.23 275 2.61 0.0014
2015-08-17 2015-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 20,614 272
2015-05-14 2015-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 18,948 -2,870 -13.15 268 -11.26 0.0015
2015-02-13 2014-12-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 21,818 -1,324 -5.72 302 -7.93 0.0017
2014-11-13 2014-09-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 23,142 -44 -0.19 328 -4.37 0.0029
2014-08-14 2014-06-30 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 23,186 -945 -3.92 343 5.54 0.0031
2014-05-15 2014-03-31 13F CALAMOS CONV & HIGH INCOME F COM SHS 12811P108 24,131 24,131 325 0.0031
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.