Data as of Oct 28, 2026.
BND vs SPY: Differences, Returns & Fees
Over the year to Oct 28, 2026, BND returned −1.3% to SPY's +13.6%; 0% of their weight is in the same names.
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Net assets: $161.4bn on Sep 30, 2026 for Vanguard Total Bond Market ETF, and $814.8bn on Oct 27, 2026 for SPDR S&P 500 ETF Trust.
Pair scorecard
BND costs 0.06 points a year less; their one-year returns differ by 14.9 points; SPY is 5.0 times larger.
| Measure | BND | SPY |
|---|---|---|
| Return | ||
| Total return, 1 year | −1.3% | +13.6% |
| Drawdown | ||
| Below its high | 3.5%, high on Aug 6, 2020 | |
| Benchmark | ||
| What it tracks | Bloomberg U.S. Aggregate Float Adjusted Index | S&P 500 Index |
| Cost and size | ||
| Expense ratio | 0.03% | 0.09% |
| Net assets, as of Sep 30, 2026 | $161.4bn | $809.2bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 100% | |
| Top ten holdings, share of the fund | 38.1% | |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
Risk and return
Apr 20, 2007 to Oct 23, 2026 · 1,018 weekly returnsEach against its own benchmark: BND against AGG, Apr 20, 2007 to Oct 23, 2026; SPY against VOO, Sep 17, 2010 to Oct 23, 2026.
SPY returned more: +630.5% to +75.5%. BND swung less: 5.0% to 18.1%. BND fell less at its worst: −18.4% to −54.6%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | BND | SPY | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +75.5% | +630.5% | SPY | Price change plus distributions, reinvested. |
| Annualized | +2.9% | +10.7% | SPY | Total return as a yearly rate. |
| Price return | −5.4% | +411.4% | SPY | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 5.0% | 18.1% | BND | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 3.7% | 12.8% | BND | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −18.4% | −54.6% | BND | Deepest fall from a high to the low after it. |
| Upside capture | 95.8% | 99.8% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 95.6% | 100.0% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 0.91 | 1.00 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.94 | 1.00 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | 0.29 | 0.57 | SPY | Return above Treasury bills per unit of volatility. |
| Sortino | 0.39 | 0.80 | SPY | Return above Treasury bills per unit of downside deviation. |
| Treynor | 0.016 | 0.133 | Return above Treasury bills per unit of beta. | |
| Calmar | 0.16 | 0.20 | SPY | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | AGG | VOO | The ETF each fund is measured against. | |
| Alpha | +0.2% a year | −0.1% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | 0.59 | −0.51 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −0.4% to +0.7% | −0.3% to +0.1% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | 0.03 | −0.15 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 1.3% | 0.4% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,018 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, BND and SPY hold 0% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
BND and SPY on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
BND and SPY do different jobs. What does each one do in a portfolio?
- What each follows. BND follows Bloomberg U.S. Aggregate Float Adjusted Index and SPY follows S&P 500 Index.
- Holdings in common. 0% of the weight is in the same securities (holdings dated Sep 30, 2026 and Oct 27, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 BND returned −1.3% and SPY +13.6% with distributions reinvested, a gap of 14.9 points.
Data as of Oct 28, 2026.
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BND
BND tracks an index of US aggregate bonds. Over the year to Oct 28, 2026 it returned −1.3% with distributions reinvested, against −1.4% 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 3.5% below its high of Aug 6, 2020 on Oct 28, 2026.
SPY
SPY tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.6% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.09% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 504 positions, with the top ten at 38.1%.
Questions people ask
- Which returned more over the last year, BND or SPY?
- In the year to Oct 28, 2026, with distributions reinvested, BND returned −1.3% and SPY +13.6%.
- Which is cheaper, BND or SPY?
- BND is cheaper, by 0.06 percentage points a year. That is about $6 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. 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.
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ETFIQ, BND against SPY, data as of Oct 28, 2026. https://etfiq.com/compare/any/bnd-vs-spy
ETFIQ. (Oct 28, 2026). BND against SPY. Retrieved from https://etfiq.com/compare/any/bnd-vs-spy
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