Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Apollo Management Holdings GP, LLC

2. Date of Event Requiring Statement (MM/DD/YYYY) 5/24/2022

3. Issuer Name and Ticker or Trading Symbol

CALAMOS STRATEGIC TOTAL RETURN FUND [CSQ]

(Last) (First) (Middle)

9 WEST 57TH STREET,, 43RD FLOOR

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director ___X___ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

NEW YORK, NY 10019

(City) (State) (Zip)

5. If Amendment, Date Original Filed(MM/DD/YYYY)

6. Individual or Joint/Group Filing(Check Applicable Line)

___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Series F Mandatory Redeemable Preferred Shares	1760000	I	See Footnote ⁽¹⁾

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:
(1)	See Exhibit 99.1.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Apollo Management Holdings GP, LLC 9 WEST 57TH STREET, 43RD FLOOR NEW YORK, NY 10019		X
Athene Annuity & Life Co 7700 MILLS CIVIC PARKWAY WEST DES MOINES, IA 50266		X
Apollo Insurance Solutions Group LP 2121 ROSECRANS AVE STE 5300 EL SEGUNDO, CA 90245		X
AISG GP Ltd. C/O WALKERS CORPORATE LIMITED CAYMAN CORPORATE CENTER, 27 HOSPITAL RD GEORGE TOWN, GRAND CAYMAN, E9 KY1-9008		X
Apollo Life Asset L.P. C/O WALKERS CORPORATE LIMITED CAYMAN CORPORATE CENTER, 27 HOSPITAL RD GEORGE TOWN, GRAND CAYMAN, E9 KY1-9008		X
Apollo Life Asset GP, LLC C/O WALKERS CORPORATE LIMITED CAYMAN CORPORATE CENTER, 27 HOSPITAL RD GEORGE TOWN, GRAND CAYMAN, E9 KY1-9008		X
Apollo Capital Management, L.P. 9 WEST 57TH STREET NEW YORK, NY 10019		X
Apollo Capital Management GP, LLC 9 WEST 57TH STREET NEW YORK, NY 10019		X
Apollo Management Holdings, L.P. 9 W. 57TH STREET NEW YORK, NY 10019		X

Signatures
See Exhibit 99.2		6/2/2022
^**Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.