ETF comparison
BIV vs SPAB
Both US Aggregate Bond.
Vanguard Intermediate-Term Bond Index Fund ETF Shares · State Street SPDR Portfolio Aggregate Bond ETF
Holdings overlap
1,745 positions appear in both funds. Buying equal dollars of BIV and SPAB would leave roughly 16.8% 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
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 BIV vs SPAB.
Top shared holdings
1,745 shared in total| # | Holding | In BIV | In SPAB | Overlap |
|---|---|---|---|---|
| 1 | United States Treasury Note/Bond | 2.08% | 0.40% | 0.40% |
| 2 | United States Treasury Note/Bond | 2.04% | 0.40% | 0.40% |
| 3 | United States Treasury Note/Bond | 2.13% | 0.37% | 0.37% |
| 4 | United States Treasury Note/Bond | 2.10% | 0.37% | 0.37% |
| 5 | United States Treasury Note/Bond | 2.08% | 0.37% | 0.37% |
| 6 | United States Treasury Note/Bond | 2.02% | 0.37% | 0.37% |
| 7 | United States Treasury Note/Bond | 2.14% | 0.36% | 0.36% |
| 8 | United States Treasury Note/Bond | 2.14% | 0.34% | 0.34% |
| 9 | United States Treasury Note/Bond | 2.04% | 0.34% | 0.34% |
| 10 | United States Treasury Note/Bond | 1.94% | 0.33% | 0.33% |
| 11 | United States Treasury Note/Bond | 1.84% | 0.32% | 0.32% |
| 12 | United States Treasury Note/Bond | 1.07% | 0.31% | 0.31% |
Only in BIV
610 total- United States Treasury Note/Bond 1.70%
- United States Treasury Note/Bond 1.65%
- United States Treasury Note/Bond 0.98%
- United States Treasury Note/Bond 0.10%
- Wells Fargo & Co 0.08%
- JPMorgan Chase & Co 0.07%
- NVIDIA Corp 0.06%
- JPMorgan Chase & Co 0.06%
- HSBC Holdings PLC 0.06%
- HSBC Holdings PLC 0.05%
Only in SPAB
6,540 total- United States Treasury 0.79%
- United States Treasury 0.44%
- United States Treasury 0.43%
- United States Treasury 0.42%
- United States Treasury 0.39%
- United States Treasury 0.38%
- United States Treasury 0.34%
- United States Treasury 0.34%
- United States Treasury 0.34%
- United States Treasury 0.32%
Related comparisons
More comparisons with BIV
- BIV vs AGG · iShares Core U.S. Aggregate Bond ETF 16.7%
- BIV vs IUSB · iShares Core Universal USD Bond ETF 15.4%
- BIV vs EAGG · iShares ESG U.S. Aggregate Bond ETF 15.4%
- BIV vs VCRB · Vanguard Core Bond ETF 10.0%
- BIV vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 9.0%
- BIV vs CGCP · Capital Group Core Plus Income ETF 5.1%
More comparisons with SPAB
- SPAB vs VCRB · Vanguard Core Bond ETF 15.8%
- SPAB vs DFCF · Dimensional Core Fixed Income ETF 15.2%
- SPAB vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 14.6%
- SPAB vs FBND · Fidelity Total Bond ETF 14.6%
- SPAB vs SHY · iShares 1-3 Year Treasury Bond ETF 14.3%
- SPAB vs VMBS · Vanguard Mortgage-Backed Securities Index Fund ETF Shares 9.7%
Percentages are holdings overlap with the named fund.
Open BIV or SPAB 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.