ETF comparison
MBB vs SCHZ
Both US Aggregate Bond.
Holdings overlap
808 positions appear in both funds. Buying equal dollars of MBB and SCHZ would leave roughly 6.8% 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
SCHZ is 1 bps cheaper than MBB. On a $100,000 position that's about $10/yr more in fees for MBB.
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 SCHZ.
Top shared holdings
808 shared in total| # | Holding | In MBB | In SCHZ | Overlap |
|---|---|---|---|---|
| 1 | Fannie Mae | 0.12% | 0.12% | 0.12% |
| 2 | Freddie Mac | 0.50% | 0.10% | 0.10% |
| 3 | Freddie Mac | 1.05% | 0.10% | 0.10% |
| 4 | Government National Mortgage Association | 0.55% | 0.09% | 0.09% |
| 5 | Government National Mortgage Association | 0.16% | 0.08% | 0.08% |
| 6 | Freddie Mac | 0.22% | 0.08% | 0.08% |
| 7 | Fannie Mae | 0.31% | 0.08% | 0.08% |
| 8 | Freddie Mac | 0.24% | 0.07% | 0.07% |
| 9 | Government National Mortgage Association | 0.08% | 0.07% | 0.07% |
| 10 | Fannie Mae | 0.10% | 0.06% | 0.06% |
| 11 | Freddie Mac | 0.08% | 0.06% | 0.06% |
| 12 | Fannie Mae | 0.30% | 0.06% | 0.06% |
Only in MBB
10,336 total- Government National Mortgage Association 0.95%
- UMBS, TBA 0.83%
- Government National Mortgage Association 0.67%
- UMBS, TBA 0.64%
- Government National Mortgage Association 0.46%
- Fannie Mae 0.44%
- UMBS, TBA 0.34%
- Fannie Mae 0.33%
- Fannie Mae 0.28%
- UMBS, TBA 0.26%
Only in SCHZ
11,518 total- United States Treasury 0.39%
- United States Treasury 0.39%
- United States Treasury 0.39%
- United States Treasury 0.37%
- United States Treasury 0.37%
- United States Treasury 0.37%
- United States Treasury 0.36%
- United States Treasury 0.36%
- United States Treasury 0.36%
- United States Treasury 0.36%
Related comparisons
More comparisons with MBB
- MBB vs SPAB · State Street SPDR Portfolio Aggregate Bond ETF 5.7%
- MBB vs BND · Vanguard Total Bond Market Index Fund ETF Shares 5.2%
- MBB vs FBND · Fidelity Total Bond ETF 4.8%
- MBB vs VCRB · Vanguard Core Bond ETF 3.2%
- MBB vs JCPB · JPMorgan Core Plus Bond ETF 2.3%
- MBB vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 1.4%
More comparisons with SCHZ
- SCHZ vs VCIT · Vanguard Intermediate-Term Corporate Bond Index Fund ETF Shares 6.7%
- SCHZ vs SCHI · Schwab 5-10 Year Corporate Bond ETF 6.7%
- SCHZ vs IGIB · iShares 5-10 Year Investment Grade Corporate Bond ETF 6.6%
- SCHZ vs JCPB · JPMorgan Core Plus Bond ETF 6.2%
- SCHZ vs CORP · PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund 5.3%
- SCHZ vs TLT · iShares 20+ Year Treasury Bond ETF 5.2%
Percentages are holdings overlap with the named fund.
Open MBB or SCHZ 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.