ETF comparison
SCHZ vs VMBS
Both US Aggregate Bond.
Schwab U.S. Aggregate Bond ETF · Vanguard Mortgage-Backed Securities Index Fund ETF Shares
Holdings overlap
965 positions appear in both funds. Buying equal dollars of SCHZ and VMBS would leave roughly 10.9% 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
Expense ratios are effectively identical (0.030% vs 0.030%).
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 SCHZ vs VMBS.
Top shared holdings
965 shared in total| # | Holding | In SCHZ | In VMBS | Overlap |
|---|---|---|---|---|
| 1 | Fannie Mae | 0.12% | 0.23% | 0.12% |
| 2 | Freddie Mac | 0.11% | 0.23% | 0.11% |
| 3 | Freddie Mac | 0.10% | 0.26% | 0.10% |
| 4 | Freddie Mac | 0.10% | 0.20% | 0.10% |
| 5 | Freddie Mac | 0.09% | 0.15% | 0.09% |
| 6 | Government National Mortgage Association | 0.09% | 0.32% | 0.09% |
| 7 | Government National Mortgage Association | 0.08% | 0.10% | 0.08% |
| 8 | Freddie Mac | 0.08% | 0.21% | 0.08% |
| 9 | Freddie Mac | 0.08% | 0.20% | 0.08% |
| 10 | Fannie Mae | 0.08% | 0.15% | 0.08% |
| 11 | Freddie Mac | 0.07% | 0.14% | 0.07% |
| 12 | Fannie Mae | 0.07% | 0.10% | 0.07% |
Only in SCHZ
11,361 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%
Only in VMBS
4,147 total- Fannie Mae or Freddie Mac 0.52%
- Ginnie Mae II Pool 0.36%
- Fannie Mae Pool 0.29%
- Ginnie Mae II Pool 0.29%
- Freddie Mac Pool 0.27%
- Freddie Mac Pool 0.27%
- Fannie Mae or Freddie Mac 0.25%
- Freddie Mac Pool 0.24%
- Fannie Mae or Freddie Mac 0.20%
- Fannie Mae Pool 0.20%
Related comparisons
More comparisons with SCHZ
- SCHZ vs SPTL · State Street SPDR Portfolio Long Term Treasury ETF 9.5%
- SCHZ vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 9.3%
- SCHZ vs IGSB · iShares 1-5 Year Investment Grade Corporate Bond ETF 9.2%
- SCHZ vs SPMB · State Street SPDR Portfolio Mortgage Backed Bond ETF 8.9%
- SCHZ vs VCSH · Vanguard Short-Term Corporate Bond Index Fund ETF Shares 8.7%
- SCHZ vs IGLB · iShares 10+ Year Investment Grade Corporate Bond ETF 7.6%
More comparisons with VMBS
- VMBS vs SPAB · State Street SPDR Portfolio Aggregate Bond ETF 9.7%
- VMBS vs EAGG · iShares ESG U.S. Aggregate Bond ETF 7.7%
- VMBS vs AGG · iShares Core U.S. Aggregate Bond ETF 7.6%
- VMBS vs IUSB · iShares Core Universal USD Bond ETF 4.7%
- VMBS vs VCRB · Vanguard Core Bond ETF 4.6%
- VMBS vs FBND · Fidelity Total Bond ETF 4.5%
Percentages are holdings overlap with the named fund.
Open SCHZ or VMBS 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.