ETF comparison
MBB vs SHY
US Aggregate Bond vs US Treasury (Short).
Holdings overlap
0 positions appear in both funds. Buying equal dollars of MBB and SHY would leave roughly 0.0% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
MBB is 11 bps cheaper than SHY. On a $100,000 position that's about $110/yr more in fees for SHY.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with MBB vs SHY.
Top shared holdings
0 shared in totalNo shared holdings between these funds.
Only in MBB
11,144 total- Freddie Mac 1.05%
- Government National Mortgage Association 0.95%
- UMBS, TBA 0.83%
- Government National Mortgage Association 0.67%
- UMBS, TBA 0.64%
- Government National Mortgage Association 0.55%
- Government National Mortgage Association 0.54%
- Government National Mortgage Association 0.53%
- Fannie Mae 0.52%
- Freddie Mac 0.50%
Only in SHY
89 total- United States of America 1.96%
- United States of America 1.84%
- United States of America 1.71%
- United States of America 1.60%
- United States of America 1.60%
- United States of America 1.52%
- United States of America 1.48%
- United States of America 1.45%
- United States of America 1.43%
- United States of America 1.40%
Related comparisons
More comparisons with MBB
- MBB vs TIP · iShares TIPS Bond ETF 0.0%
- MBB vs TLT · iShares 20+ Year Treasury Bond ETF 0.0%
- MBB vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 0.0%
- MBB vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 0.0%
- MBB vs VTIP · Vanguard Short-Term Inflation-Protected Securities Index Fund ETF Shares 0.0%
- MBB vs VUSB · Vanguard Ultra-Short Bond ETF 0.0%
More comparisons with SHY
- SHY vs MINT · PIMCO Enhanced Short Maturity Active Exchange-Traded Fund 0.0%
- SHY vs MUB · iShares National Muni Bond ETF 0.0%
- SHY vs NYF · iShares New York Muni Bond ETF 0.0%
- SHY vs PAAA · PGIM AAA CLO ETF 0.0%
- SHY vs PCY · Invesco Emerging Markets Sovereign Debt ETF 0.0%
- SHY vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 0.0%
Percentages are holdings overlap with the named fund.
Open MBB or SHY at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.