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MBB vs LMUB

iShares MBS ETF vs iShares Long-Term National Muni Bd ETF

MBB

iShares MBS ETF

iShares

Annual cost

0.04%

Fund size

$38.3B

LMUB

iShares Long-Term National Muni Bd ETF

iShares

Annual cost

0.09%

Fund size

$1.5B

Key differences

  • MBB is significantly larger than LMUB — larger funds tend to be more liquid and less likely to close.
  • MBB has a longer track record, which may reduce uncertainty around long-term behavior.

Side-by-side comparison

MBBLMUB
Annual cost (TER)0.04%0.09%
Fund size (AUM)$38.3B$1.5B
Since20072025
Dividend yield4.23%3.96%
Asset classfixed incomefixed income
Regionnorth americanorth america
Strategyindex trackingindex tracking
CAGR 1Y+7.4%+6.8%
CAGR 3Y+4.1%N/A
CAGR 5Y+0.3%N/A
Sharpe 3Y0.11N/A
Volatility 1Y4.54%4.20%
Max drawdown-17.65%-5.51%

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

Similar to MBB and LMUB