The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

Report for the Calendar Year or Quarter Ended: 09-30-2023
Check here if Amendment    Amendment Number:
This Amendment (Check only one.):    is a restatement.
   adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Virtus Investment Advisers, Inc.
Address: ONE FINANCIAL PLAZA
26TH FLOOR
HARTFORD, CT  06103
Form 13F File Number: 028-00085
CRD Number (if applicable): 000106982
SEC File Number (if applicable): 801-5995

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: David E. Fusco
Title: Chief Compliance Officer
Phone: 860-263-4732
Signature, Place, and Date of Signing:
David E. Fusco HartfordCT 11-08-2023
[Signature] [City, State] [Date]
Report Type (Check only one.):
   13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
   13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
X 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Name Form 13F File No. CRD No. (if applicable) SEC File No. (if applicable) CIK
DUFF & PHELPS INVESTMENT MANAGEMENT CO 028-01420 000107296   0000765443
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 028-05792 000104599   0001021223
VONTOBEL ASSET MANAGEMENT, INC 028-04490 000105007    
Sustainable Growth Advisers, LP 028-11076 000127447   0001290668
NFJ INVESTMENT GROUP, LLC 028-21243 000310902   0001862664
Westchester Capital Management, LLC 028-14257 000155686   0001512805
Silvant Capital Management LLC 028-18744 000146025   0001738728
VOYA INVESTMENT MANAGEMENT LLC 028-07292 000108934   0001068837
ZEVENBERGEN CAPITAL INVESTMENTS LLC 028-10622 000128990   0001276918
Form 13F Summary Page
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total: 242
Form 13F Information Table Value Total: 146,990,209
(round to nearest dollar)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
NONE