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BND vs SPAB: Differences, Returns & Fees

On Jun 30, 2026 BND's duration was 5.7 years and SPAB's 5.9; both charge 0.03%. Net assets: $161.4bn on Sep 30, 2026 for Vanguard Total Bond Market ETF, and $9.9bn on Oct 8, 2026 for State Street SPDR Portfolio Aggregate Bond ETF.

Both cost 0.03% a year; their one-year returns differ by 0.1 points; BND is 16.3 times larger.

Points (pts) are percentage points.

BNDSPAB
Expense ratio0.03%0.03%
Net assets, as of Sep 30, 2026$161.4bn$9.9bn
Total return, 1 year−1.5%−1.6%
What it tracksBloomberg U.S. Aggregate Float Adjusted IndexBloomberg U.S. Aggregate Bond Index ?
Holdings in common59%
Below its high4.9%, high on Aug 6, 20204.9%, high on Aug 4, 2020

Holdings in common uses holdings dated Jun 30, 2026.

−1.5%
BND total return, 1 year
−1.6%
SPAB total return, 1 year
0.03%
BND expense ratio
0.03%
SPAB expense ratio

What they hold in common

By the books each fund has filed, BND and SPAB hold 59% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.

half

59% in common

Positions both hold, largest shared weight first
Holding BND SPAB
US TREASURY N/B, due Jan 31, 2028 0.47% 0.42%
US TREASURY N/B, due Nov 15, 2034 0.41% 0.40%
US TREASURY N/B, due Aug 15, 2035 0.39% 0.40%
US TREASURY N/B, due May 15, 2034 0.41% 0.37%
US TREASURY N/B, due Nov 15, 2033 0.39% 0.37%
US TREASURY N/B, due Feb 15, 2035 0.41% 0.37%
US TREASURY N/B, due Aug 15, 2034 0.41% 0.37%
US TREASURY N/B, due Feb 15, 2036 0.41% 0.36%
US TREASURY N/B, due Feb 15, 2034 0.40% 0.34%
US TREASURY N/B, due May 15, 2035 0.36% 0.34%
US TREASURY N/B, due Nov 30, 2027 0.41% 0.32%
US TREASURY N/B, due Aug 15, 2033 0.36% 0.32%
Only in BND
US TREASURY N/B, due May 15, 2032 0.35%
US TREASURY N/B, due Nov 15, 2031 0.34%
US TREASURY N/B, due May 15, 2030 0.28%
US TREASURY N/B, due Apr 30, 2029 0.22%
US TREASURY N/B, due Nov 30, 2027 0.19%
US TREASURY N/B, due Jun 30, 2027 0.19%
US TREASURY N/B, due Jul 31, 2027 0.18%
US TREASURY N/B, due Jun 15, 2027 0.16%
Only in SPAB
Fannie Mae Pool, due Nov 1, 2051 0.21%
U.S. Treasury Notes, due Jan 15, 2029 0.17%
Ginnie Mae, due Jul 20, 2056 0.17%
Freddie Mac Pool, due Aug 1, 2050 0.14%
Freddie Mac Pool, due Jun 1, 2051 0.12%
Fannie Mae Pool, due Oct 1, 2050 0.11%
Fannie Mae Pool, due Nov 1, 2051 0.11%
Ginnie Mae, due Jul 20, 2056 0.10%

Check overlap with more funds →

On the same fields

BND
Vanguard Total Bond Market ETF
SPAB
State Street SPDR Portfolio Aggregate Bond ETF
Where it sits Bond ETF Bond ETF
Issuer Vanguard State Street
What it is Tracks an index of US aggregate bonds Tracks an index
Total return, 1 year −1.5% −1.6%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 −18.8 pts −18.8 pts
Expense ratio 0.03% 0.03%
Holdings 16275 8690
Net assets, BND as of Sep 30, 2026 and SPAB as of Oct 8, 2026 $161.4bn $9.9bn

BND and SPAB on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

BND in plain words

BND tracks an index of US aggregate bonds. Over the year to Oct 9, 2026 it returned −1.5% with distributions reinvested, against −1.6% for its benchmark, the Bloomberg U.S. Aggregate Float Adjusted Index, measured by the closely related Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.03% a year. It sat 4.9% below its high of Aug 6, 2020 on Oct 9, 2026.

SPAB in plain words

SPAB tracks an index. Over the year to Oct 9, 2026 it returned −1.6% with distributions reinvested, against −1.6% for its benchmark, the Bloomberg U.S. Aggregate Bond Index ?. It sat 4.9% below its high of Aug 4, 2020 on Oct 9, 2026.

Questions people ask

Which returned more over the last year, BND or SPAB?
In the year to Oct 9, 2026, with distributions reinvested, BND returned −1.5% and SPAB −1.6%.
Which is cheaper, BND or SPAB?
Neither: BND and SPAB both charge 0.03% a year. Fees come from each fund's prospectus.
Other comparisons
BND vs SCHZBND vs CGCBBND vs EAGGBND vs FLCBSPAB vs VCRBCGCB vs SPABEAGG vs SPABFLCB vs SPAB
BND on its own →SPAB on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
BND filings on SEC EDGAR ↗BND prospectus with the expense ratio (SEC) ↗Vanguard page for BND ↗SPAB filings on SEC EDGAR ↗SPAB prospectus with the expense ratio (SEC) ↗State Street website ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, BND against SPAB, data as of Oct 9, 2026. https://etfiq.com/compare/any/bnd-vs-spab

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.