# EDGAR Filing Document

**Accession Number:** 0001588873
**File Stem:** 0001588873-25-000007
**Filing Date:** 2025-11
**Character Count:** 9288
**Document Hash:** b2db3a24411903c77d2d7dca5d23502f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001588873-25-000007.hdr.sgml**: 20251112

**ACCESSION NUMBER**: 0001588873-25-000007

**CONFORMED SUBMISSION TYPE**: 13F-HR

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251112

**DATE AS OF CHANGE**: 20251112

**EFFECTIVENESS DATE**: 20251112

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Municipal Employees' Retirement System of Michigan
- **CENTRAL INDEX KEY:** 0001588873

**ORGANIZATION NAME:**
- **EIN:** 381957940
- **STATE OF INCORPORATION:** MI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-15623
- **FILM NUMBER:** 251472318

**BUSINESS ADDRESS:**
- **STREET 1:** 1134 MUNICIPAL WAY
- **CITY:** LANSING
- **STATE:** MI
- **ZIP:** 48917
- **BUSINESS PHONE:** 517-703-9030

**MAIL ADDRESS:**
- **STREET 1:** 1134 MUNICIPAL WAY
- **CITY:** LANSING
- **STATE:** MI
- **ZIP:** 48917

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 09-30-2025

**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:** Municipal Employees' Retirement System of Michigan<br>**Address:** 1134 MUNICIPAL WAY<br>LANSING, MI 48917

**Form 13F File Number:** 028-15623

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:** Peter Wujkowski<br>**Title:** Investment and Administrative Officer<br>**Phone:** 5174202568

**Signature, Place, and Date of Signing:**

Peter Wujkowski  Lansing, MI  11-12-2025<br>[Signature]  [City, State]  [Date]

**Report Type (Check only one.):**

[x] **13F HOLDINGS REPORT.** (Check here if all holdings of this reporting manager are reported in this report.)

[ ] **13F NOTICE.** (Check here if no holdings are reported in this report, and all holdings are reported by other reporting manager(s).)

[ ] **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).)

### Form 13F Summary Page

**Report Summary:**

**Number of Other Included Managers:** 0

**Form 13F Information Table Entry Total:** 54

**Form 13F Information Table Value Total:** $8635776

      (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**

### FORM 13F INFORMATION TABLE

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | VOTING AUTHORITY | VOTING AUTHORITY | VOTING AUTHORITY |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | SOLE | SHARED | NONE |
| BONDBLOXXBB RATED USD HY CB | COM | 09789C705 |  | 257482 | 6227640 | SH |  | SOLE |  | 6227640 | 0 | 0 |
| BONDBLOXX BBG 6 MTH US TREAS | COM | 09789C788 |  | 22605 | 448334 | SH |  | SOLE |  | 448334 | 0 | 0 |
| BONDBLOXX BBG 20Y US TSY ETF | COM | 09789C796 |  | 16411 | 420244 | SH |  | SOLE |  | 420244 | 0 | 0 |
| BONDBLOXXB RATED USD HY CB | COM | 09789C804 |  | 10625 | 266860 | SH |  | SOLE |  | 266860 | 0 | 0 |
| BONDBLOXX BBG 10Y US TSY ETF | COM | 09789C812 |  | 18813 | 403452 | SH |  | SOLE |  | 403452 | 0 | 0 |
| BONDBLOXX BBG 7 YR US TREAS | COM | 09789C820 |  | 19461 | 403857 | SH |  | SOLE |  | 403857 | 0 | 0 |
| BONDBLOXX BBG 5 YR US TREAS | COM | 09789C838 |  | 34872 | 704064 | SH |  | SOLE |  | 704064 | 0 | 0 |
| BONDBLOXX BBG 3Y US TSY ETF | COM | 09789C846 |  | 20051 | 402313 | SH |  | SOLE |  | 402313 | 0 | 0 |
| BONDBLOXX BBG 2Y US TSY ETF | COM | 09789C853 |  | 20646 | 416558 | SH |  | SOLE |  | 416558 | 0 | 0 |
| BONDBLOXX BBG 1 DUR US TREAS | COM | 09789C861 |  | 58527 | 1178547 | SH |  | SOLE |  | 1178547 | 0 | 0 |
| BONDBLOXXJPM USD EM MK 110 | COM | 09789C879 |  | 205399 | 4698046 | SH |  | SOLE |  | 4698046 | 0 | 0 |
| BONDBLOXXCCCUSD HY CORP BD | COM | 09789C887 |  | 4775 | 121654 | SH |  | SOLE |  | 121654 | 0 | 0 |
| FIRST MAJESTIC SILVER CORP | COM | 32076V103 |  | 13842 | 1126289 | SH |  | SOLE |  | 1126289 | 0 | 0 |
| FRANKLIN FTSE CANADA ETF | COM | 35473P827 |  | 125935 | 2773743 | SH |  | SOLE |  | 2773743 | 0 | 0 |
| INVESCO SP SMALLCAP 600 QVM | COM | 46138G565 |  | 199021 | 7114414 | SH |  | SOLE |  | 7114414 | 0 | 0 |
| INVESCO SP MIDCAP 400 QVM M | COM | 46138G573 |  | 360199 | 11882576 | SH |  | SOLE |  | 11882576 | 0 | 0 |
| INVESCO SP 500 QVM MULTIFA | COM | 46138G581 |  | 1340559 | 34132010 | SH |  | SOLE |  | 34132010 | 0 | 0 |
| ISHARES CORE SP 500 ETF | COM | 464287200 |  | 991676 | 1481662 | SH |  | SOLE |  | 1481662 | 0 | 0 |
| ISHARES CORE SP MIDCAP ETF | COM | 464287507 |  | 297273 | 4555207 | SH |  | SOLE |  | 4555207 | 0 | 0 |
| ISHARES CORE SP SMALLCAP E | COM | 464287804 |  | 2867 | 24129 | SH |  | SOLE |  | 24129 | 0 | 0 |
| ISHARES MBS ETF | COM | 464288588 |  | 6420 | 67475 | SH |  | SOLE |  | 67475 | 0 | 0 |
| ISHARES MBS ETF | COM | 464288588 |  | 7 | 76 | SH |  | SOLE |  | 76 | 0 | 0 |
| ISHARES 05 YEAR TIPS BOND E | COM | 46429B747 |  | 2131 | 20614 | SH |  | SOLE |  | 20614 | 0 | 0 |
| ISHARES 05 YEAR TIPS BOND E | COM | 46429B747 |  | 9861 | 95402 | SH |  | SOLE |  | 95402 | 0 | 0 |
| ISHARES 05 YEAR TIPS BOND E | COM | 46429B747 |  | 536 | 5184 | SH |  | SOLE |  | 5184 | 0 | 0 |
| ISHARES CORE MSCI EMERGING | COM | 46434G103 |  | 314643 | 4773111 | SH |  | SOLE |  | 4773111 | 0 | 0 |
| ISHARES MSCI GLOBAL METALS | COM | 46434G848 |  | 134968 | 3032992 | SH |  | SOLE |  | 3032992 | 0 | 0 |
| ISHARES MSCI GLOBAL GOLD MIN | COM | 46434G855 |  | 88796 | 1372210 | SH |  | SOLE |  | 1372210 | 0 | 0 |
| ISHARES FALLEN ANGELS ETF | COM | 46435G474 |  | 96579 | 3476559 | SH |  | SOLE |  | 3476559 | 0 | 0 |
| ISHARES BB RATED CORP BOND | COM | 46435U473 |  | 1825 | 38566 | SH |  | SOLE |  | 38566 | 0 | 0 |
| ISHARES COPPER AND METALS | COM | 46436E189 |  | 29506 | 784271 | SH |  | SOLE |  | 784271 | 0 | 0 |
| JPMORGAN BETABUILDERS CANADA | COM | 46641Q225 |  | 82045 | 940556 | SH |  | SOLE |  | 940556 | 0 | 0 |
| JPMORGAN BETABUILDERS DEVELO | COM | 46641Q233 |  | 16834 | 298785 | SH |  | SOLE |  | 298785 | 0 | 0 |
| SPDR PORTFOLIO EMERGING MARK | COM | 78463X509 |  | 5015 | 107144 | SH |  | SOLE |  | 107144 | 0 | 0 |
| SPDR PORTFOLIO DEVELOPED WOR | COM | 78463X889 |  | 11817 | 276169 | SH |  | SOLE |  | 276169 | 0 | 0 |
| SS SPDR P INT C CORP ETF | COM | 78464A375 |  | 5749 | 169625 | SH |  | SOLE |  | 169625 | 0 | 0 |
| SS SPDR P INT C CORP ETF | COM | 78464A375 |  | 433740 | 12798471 | SH |  | SOLE |  | 12798471 | 0 | 0 |
| SS SPDR P ST C CORP ETF | COM | 78464A474 |  | 6908 | 228061 | SH |  | SOLE |  | 228061 | 0 | 0 |
| SS SPDR PF LNG TRM TSY EUSD | COM | 78464A664 |  | 5588 | 207332 | SH |  | SOLE |  | 207332 | 0 | 0 |
| SS SPDR PF LNG TRM TSY EUSD | COM | 78464A664 |  | 334779 | 12422243 | SH |  | SOLE |  | 12422243 | 0 | 0 |
| SS SPDR P INT TERM TSY ETF | COM | 78464A672 |  | 1036402 | 35861653 | SH |  | SOLE |  | 35861653 | 0 | 0 |
| SS SPDR P SP 400 MIDCAP ETF | COM | 78464A847 |  | 1541 | 26947 | SH |  | SOLE |  | 26947 | 0 | 0 |
| STATE STREET SPDR PORTFOLIO | COM | 78464A854 |  | 14744 | 188205 | SH |  | SOLE |  | 188205 | 0 | 0 |
| SS SPDR P ST TERM TSY ETF | COM | 78468R101 |  | 6775 | 231066 | SH |  | SOLE |  | 231066 | 0 | 0 |
| SS SPDR P ST TERM TSY ETF | COM | 78468R101 |  | 425 | 14502 | SH |  | SOLE |  | 14502 | 0 | 0 |
| SS SPDR P ST TERM TSY ETF | COM | 78468R101 |  | 636161 | 21697170 | SH |  | SOLE |  | 21697170 | 0 | 0 |
| SS SPDR P HIGH YIELD ETF | COM | 78468R606 |  | 8111 | 338803 | SH |  | SOLE |  | 338803 | 0 | 0 |
| SS SPDR P HIGH YIELD ETF | COM | 78468R606 |  | 134436 | 5615522 | SH |  | SOLE |  | 5615522 | 0 | 0 |
| SS SPDR P SP 600 SMALL CAP | COM | 78468R853 |  | 771 | 16642 | SH |  | SOLE |  | 16642 | 0 | 0 |
| SCHWAB US TIPS ETF | COM | 808524870 |  | 442013 | 16401227 | SH |  | SOLE |  | 16401227 | 0 | 0 |
| ENERGY SELECT SECTOR SPDR | COM | 81369Y506 |  | 32174 | 360126 | SH |  | SOLE |  | 360126 | 0 | 0 |
| VANGUARD FTSE EUROPE ETF | COM | 922042874 |  | 705069 | 8835451 | SH |  | SOLE |  | 8835451 | 0 | 0 |
| VANGUARD SHORTTERM TREASURY | COM | 92206C102 |  | 7831 | 133074 | SH |  | SOLE |  | 133074 | 0 | 0 |
| VANGUARD SHORTTERM TREASURY | COM | 92206C102 |  | 537 | 9132 | SH |  | SOLE |  | 9132 | 0 | 0 |

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