Company: CHY
Filing Date: 2025-04-25
Form Type: CORRESP
Source: 0001104659-25-039168
Chunk: 1

Company: CALAMOS CONVERTIBLE & HIGH INCOME FUND
Filing Date: 2025-04-25
Form: CORRESP
Chunk 1
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2024, and was not renewed. The Registrant reviewed the N-CSR filing so only those Calamos closed-end
funds with active shelf registration statements included the auditor’s consent and the forward incorporation disclosure. The Registrant
believes that the filings were in line with controls in light of earlier comments on a similar issue. Each Fund was filed with the appropriate
disclosure and auditor’s consents only if an active shelf registration statement was in place as of October 31, 2024.

1
See Form N-CSR filed Dec. 29, 2023 -- Consent of Independent Registered Public Accounting Firm dated December 20, 2023 (Ex. 99.(A)(2)(XIV).

2
See Form N-CSR filed Dec. 27, 2024.

2. Comment– For open written options contracts, please
disclose all information required by Reg S-X 12-13 in columns A through G, including the counterparty.

Response– The Registrant notes that open written options contracts held by the Calamos Funds are all exchange traded options
and, as such, disclosure of the counterparty was not required by Reg S-X 12-134.
The Registrant, in future filings, will update the Schedule of Investments header to reflect “Exchange Traded Written Options.”

3. Comment – Please provide an analysis citing applicable
sections of ASC 820 Fair value measurements, other applicable accounting and regulatory guidance, and the Registrants’ valuation
policies and procedures supporting the classification of written options by certain Registrants as Level 1 in the ASC 820 Fair Valuation
Hierarchy. In your response, if applicable, please describe the active markets referenced for identical assets as a basis for your categorization.

Response
– The Registrant notes that open written options contracts held by Registrants are all exchange traded options and, as such, were
Level 1 investments. Under ASC 820 these are considered quoted prices (unadjusted) in active markets for identical assets or liabilities
that the reporting entity can access at the measurement date.5
The Registrant, in future filings, will update the ASC 820 leveling table in the Notes to Financials to reflect “Exchange Traded
Written Options.”

4. Comment – Please provide an analysis citing applicable
US GAAP and other applicable accounting guidance supporting the Registrants’ disclosure of securities lending activities undertaken
by State Street Bank and Trust Company (“SSBT”) on the Registrants’ behalf pursuant to the Amended and Restated