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Municipal Employees' Retirement System of Michigan’s iShares MBS ETF MBB Stock Holding History

Municipal Employees' Retirement System of Michigan’s Portfolio MBB Stock Details MBB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-67,551
Closed -$6.43M – 39
2025
Q3 		$6.43M Hold
67,551
– – 0.07% 39
2025
Q2 		$6.34M Hold
67,551
– – 0.08% 39
2025
Q1 		$6.33M Buy
67,551
+23,580
+54% +$2.18M 0.08% 39
2024
Q4 		$4.03M Sell
43,971
-36,128
-45% -$3.36M 0.06% 44
2024
Q3 		$7.67M Buy
80,099
+5,229
+7% +$494K 0.1% 42
2024
Q2 		$6.87M Sell
74,870
-991,441
-93% -$90.3M 0.1% 42
2024
Q1 		$98.5M Sell
1,066,311
-16,068
-1% -$1.49M 1.27% 23
2023
Q4 		$102M Hold
1,082,379
– – 1.36% 22
2023
Q3 		$96.1M Buy
1,082,379
+801,744
+286% +$73.3M 1.34% 23
2023
Q2 		$26.2M Buy
280,635
+5,126
+2% +$482K 0.37% 32
2023
Q1 		$26.1M Sell
275,509
-260,086
-49% -$24.6M 0.4% 32
2022
Q4 		$49.7M Hold
535,595
– – 0.8% 22
2022
Q3 		$49M Buy
535,595
+23,840
+5% +$2.31M 0.88% 22
2022
Q2 		$49.9M Sell
511,755
-25,391
-5% -$2.49M 0.92% 21
2022
Q1 		$54.7M Sell
537,146
-136,878
-20% -$14.3M 0.85% 18
2021
Q4 		$72.4M Sell
674,024
-638
-0.1% -$68.7K 1.16% 14
2021
Q3 		$73M Hold
674,662
– – 1.22% 14
2021
Q2 		$73M Sell
674,662
-129,378
-16% -$14M 0.99% 15
2021
Q1 		$87.2M Buy
804,040
+350,029
+77% +$38.3M 1.46% 13
2020
Q4 		$50M Sell
454,011
-374,543
-45% -$41.2M 0.97% 15
2020
Q3 		$91.5M Hold
828,554
– – 2.2% 8
2020
Q2 		$91.7M Buy
828,554
+455,277
+122% +$50.4M 2.29% 9
2020
Q1 		$41.2M Sell
373,277
-92,055
-20% -$10M 1.3% 13
2019
Q4 		$50.3M Hold
465,332
– – 1.63% 9
2019
Q3 		$50.4M Buy
+465,332
New +$50.2M 1.93% 6

Other funds holding MBB

Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 1-Year Est. Return
TIAA Trust, National Association
TIAA Trust, National Association Charlotte, North Carolina $1.69B AUM 19.12% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
Truist Financial
Truist Financial Charlotte, North Carolina $83.7B AUM 27.22% 1-Year Est. Return
RH
RenaissanceRe Holdings Pembroke, Bermuda $421M AUM 4.08% 1-Year Est. Return

Municipal Employees' Retirement System of Michigan's MBB Position: Q4 2025 in Review

Municipal Employees' Retirement System of Michigan sold out of iShares MBS ETF (MBB) in Q4 2025, closing a stake of 67,551 shares — an estimated $6.43M sold.

Municipal Employees' Retirement System of Michigan first reported a position in MBB in Q3 2019 and held it in 25 quarters. The position peaked at $102M in Q4 2023. 1,019 funds tracked by Wall St. Rank hold MBB as of Q4 2025.

  • Municipal Employees' Retirement System of Michigan reported no remaining iShares MBS ETF position as of Q4 2025 after selling out during the quarter.
  • Municipal Employees' Retirement System of Michigan sold 67,551 iShares MBS ETF shares in Q4 2025, an estimated $6.43M.
  • Municipal Employees' Retirement System of Michigan first reported a position in iShares MBS ETF in Q3 2019 and held it in 25 quarters.
  • Municipal Employees' Retirement System of Michigan's iShares MBS ETF position peaked at $102M in Q4 2023.
  • 1,019 funds tracked by Wall St. Rank held iShares MBS ETF as of Q4 2025.

Based on Municipal Employees' Retirement System of Michigan's 13F filing for Q4 2025, filed 6 Feb 2026.