ETF comparison
BOND vs SPMB
Both US Aggregate Bond.
PIMCO Active Bond Exchange-Traded Fund · State Street SPDR Portfolio Mortgage Backed Bond ETF
Holdings overlap
14 positions appear in both funds. Buying equal dollars of BOND and SPMB would leave roughly 1.9% 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
SPMB is 50 bps cheaper than BOND. On a $100,000 position that's about $500/yr more in fees for BOND.
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 BOND vs SPMB.
Top shared holdings
14 shared in total| # | Holding | In BOND | In SPMB | Overlap |
|---|---|---|---|---|
| 1 | Fannie Mae | 0.76% | 0.35% | 0.35% |
| 2 | Freddie Mac | 0.61% | 0.34% | 0.34% |
| 3 | UMBS, TBA | 1.58% | 0.29% | 0.29% |
| 4 | UMBS, TBA | 0.23% | 0.45% | 0.23% |
| 5 | Government National Mortgage Association | 0.38% | 0.17% | 0.17% |
| 6 | UMBS, TBA | 0.16% | 0.39% | 0.16% |
| 7 | Government National Mortgage Association | 0.21% | 0.13% | 0.13% |
| 8 | Fannie Mae | 0.98% | 0.11% | 0.11% |
| 9 | Freddie Mac | 0.06% | 0.13% | 0.06% |
| 10 | Fannie Mae | 0.01% | 0.01% | 0.01% |
| 11 | Fannie Mae | 0.01% | 0.00% | 0.00% |
| 12 | Freddie Mac | 0.42% | 0.00% | 0.00% |
Only in BOND
1,505 total- UMBS, TBA 5.56%
- PIMCO Mortgage-Backed Securities Active Exchange-Traded Fund 4.07%
- UMBS, TBA 3.46%
- United States Treasury 3.39%
- UMBS, TBA 2.73%
- United States Treasury 2.57%
- UMBS, TBA 2.54%
- UMBS, TBA 2.27%
- United States Treasury 1.94%
- United States Treasury 1.93%
Only in SPMB
2,685 total- Freddie Mac 1.17%
- Fannie Mae 0.79%
- Freddie Mac 0.76%
- UMBS, TBA 0.63%
- Freddie Mac 0.61%
- Freddie Mac 0.55%
- Government National Mortgage Association 0.55%
- Fannie Mae 0.51%
- Fannie Mae 0.49%
- Fannie Mae 0.47%
Related comparisons
More comparisons with BOND
- BOND vs GVI · iShares Intermediate Government/Credit Bond ETF 1.7%
- BOND vs EAGG · iShares ESG U.S. Aggregate Bond ETF 1.6%
- BOND vs NEAR · iShares Short Duration Bond Active ETF 1.5%
- BOND vs JCPB · JPMorgan Core Plus Bond ETF 1.3%
- BOND vs MINT · PIMCO Enhanced Short Maturity Active Exchange-Traded Fund 1.0%
- BOND vs BSV · Vanguard Short-Term Bond Index Fund ETF Shares 1.0%
More comparisons with SPMB
- SPMB vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 1.2%
- SPMB vs JCPB · JPMorgan Core Plus Bond ETF 0.2%
- SPMB vs BINC · iShares Flexible Income Active ETF 0.0%
- SPMB vs BIV · Vanguard Intermediate-Term Bond Index Fund ETF Shares 0.0%
- SPMB vs BLV · Vanguard Long-Term Bond Index Fund ETF Shares 0.0%
- SPMB vs BNDX · Vanguard Total International Bond Index Fund ETF Shares 0.0%
Percentages are holdings overlap with the named fund.
Open BOND 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.