ETF comparison
SCHZvsSPMB
Both US Aggregate Bond.
Schwab U.S. Aggregate Bond ETF · State Street SPDR Portfolio Mortgage Backed Bond ETF
Holdings overlap
642 positions appear in both funds. Buying equal dollars of SCHZ and SPMB would leave roughly9.0%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
SCHZ is 1 bps cheaper than SPMB. On a $100,000 position that's about $10/yr more in fees for SPMB.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open thecost calculator pre-filled with SCHZ vs SPMB.
Top shared holdings
642 shared in total| # | Holding | In SCHZ | In SPMB | Overlap |
|---|---|---|---|---|
| 1 | UMBS, TBA | 0.26% | 0.45% | 0.26% |
| 2 | UMBS, TBA | 0.19% | 0.39% | 0.19% |
| 3 | UMBS, TBA | 0.18% | 0.46% | 0.18% |
| 4 | UMBS, TBA | 0.15% | 0.63% | 0.15% |
| 5 | State Street Institutional US Government Money Market Fund | 0.15% | 1.03% | 0.15% |
| 6 | UMBS, TBA | 0.13% | 0.20% | 0.13% |
| 7 | Fannie Mae | 0.12% | 0.14% | 0.12% |
| 8 | Fannie Mae | 0.11% | 0.17% | 0.11% |
| 9 | Freddie Mac | 0.11% | 0.29% | 0.11% |
| 10 | Freddie Mac | 0.10% | 0.30% | 0.10% |
| 11 | Freddie Mac | 0.10% | 0.35% | 0.10% |
| 12 | Government National Mortgage Association | 0.08% | 0.22% | 0.08% |
Only in SCHZ
11,685 total- United States Treasury0.39%
- United States Treasury0.39%
- United States Treasury0.39%
- United States Treasury0.37%
- United States Treasury0.37%
- United States Treasury0.37%
- United States Treasury0.36%
- United States Treasury0.36%
- United States Treasury0.36%
- United States Treasury0.36%
Only in SPMB
2,058 total- Freddie Mac1.17%
- Fannie Mae0.49%
- Fannie Mae0.45%
- Government National Mortgage Association0.44%
- Freddie Mac0.44%
- Freddie Mac0.44%
- Freddie Mac0.42%
- Freddie Mac0.38%
- Freddie Mac0.36%
- Government National Mortgage Association0.36%
Open SCHZ or SPMB 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 methodologyand 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.