ETF comparison
CGCP vs SPMB
Both US Aggregate Bond.
Capital Group Core Plus Income ETF · State Street SPDR Portfolio Mortgage Backed Bond ETF
Holdings overlap
40 positions appear in both funds. Buying equal dollars of CGCP and SPMB would leave roughly 3.8% 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
SPMB is 30 bps cheaper than CGCP. On a $100,000 position that's about $300/yr more in fees for CGCP.
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 CGCP vs SPMB.
Top shared holdings
40 shared in total| # | Holding | In CGCP | In SPMB | Overlap |
|---|---|---|---|---|
| 1 | UMBS, TBA | 0.75% | 0.63% | 0.63% |
| 2 | Freddie Mac | 0.50% | 0.55% | 0.50% |
| 3 | UMBS, TBA | 0.46% | 0.45% | 0.45% |
| 4 | Freddie Mac | 0.45% | 0.44% | 0.44% |
| 5 | UMBS, TBA | 2.01% | 0.32% | 0.32% |
| 6 | UMBS, TBA | 1.27% | 0.29% | 0.29% |
| 7 | UMBS, TBA | 0.80% | 0.20% | 0.20% |
| 8 | UMBS, TBA | 0.14% | 0.26% | 0.14% |
| 9 | Freddie Mac | 0.41% | 0.12% | 0.12% |
| 10 | UMBS, TBA | 0.10% | 0.20% | 0.10% |
| 11 | UMBS, TBA | 0.10% | 0.46% | 0.10% |
| 12 | Fannie Mae | 0.08% | 0.07% | 0.07% |
Only in CGCP
1,419 total- United States Treasury 4.35%
- United States Treasury 3.27%
- United States Treasury 1.73%
- United States Treasury 1.63%
- United States Treasury 1.59%
- United States Treasury 1.58%
- United States Treasury 1.48%
- Fannie Mae 1.45%
- UMBS, TBA 1.40%
- United States Treasury 1.19%
Only in SPMB
2,659 total- Freddie Mac 1.17%
- Fannie Mae 0.79%
- Freddie Mac 0.76%
- Freddie Mac 0.61%
- Government National Mortgage Association 0.55%
- Fannie Mae 0.51%
- Fannie Mae 0.49%
- Fannie Mae 0.47%
- Fannie Mae 0.45%
- Government National Mortgage Association 0.44%
Related comparisons
More comparisons with CGCP
- CGCP vs TLT · iShares 20+ Year Treasury Bond ETF 2.5%
- CGCP vs VMBS · Vanguard Mortgage-Backed Securities Index Fund ETF Shares 1.8%
- CGCP vs MINT · PIMCO Enhanced Short Maturity Active Exchange-Traded Fund 1.3%
- CGCP vs MBB · iShares MBS ETF 0.9%
- CGCP vs NEAR · iShares Short Duration Bond Active ETF 0.8%
- CGCP vs SCHP · Schwab U.S. TIPS ETF 0.2%
More comparisons with SPMB
- SPMB vs IUSB · iShares Core Universal USD Bond ETF 3.6%
- SPMB vs FBND · Fidelity Total Bond ETF 2.6%
- SPMB vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 2.4%
- SPMB vs BOND · PIMCO Active Bond Exchange-Traded Fund 1.9%
- SPMB vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 1.2%
- SPMB vs JCPB · JPMorgan Core Plus Bond ETF 0.2%
Percentages are holdings overlap with the named fund.
Open CGCP 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 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.