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MBB vs MBSX

iShares MBS ETF vs Regan Fixed Rate MBS ETF

MBB

iShares MBS ETF

iShares

Annual cost

0.04%

Fund size

$38.3B

MBSX

Regan Fixed Rate MBS ETF

Regan Capital

Annual cost

0.40%

Fund size

$17M

Key differences

  • MBB costs 0.36% less per year.
  • MBB is significantly larger than MBSX — larger funds tend to be more liquid and less likely to close.
  • MBB follows a index tracking strategy; MBSX uses active selection.
  • MBB has a longer track record, which may reduce uncertainty around long-term behavior.

Side-by-side comparison

MBBMBSX
Annual cost (TER)0.04%0.40%
Fund size (AUM)$38.3B$17M
Since20072025
Dividend yield4.23%1.91%
Asset classfixed incomefixed income
Regionnorth americanorth america
Strategyindex trackingactive selection
CAGR 1Y+7.4%+7.3%
CAGR 3Y+4.1%N/A
CAGR 5Y+0.3%N/A
Sharpe 3Y0.11N/A
Volatility 1Y4.54%37.96%
Max drawdown-17.65%-15.55%

Green dot indicates the better value for that metric. Performance data is historical and does not predict future results.

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