What is Benchmark? (Plain English Definition)
Definition: A benchmark is a standard index or measure used to evaluate the performance of an investment fund or portfolio.
Benchmark Explained Simply
A benchmark is a reference point against which you measure an investment's performance. For most U.S. stock ETFs, the S&P 500 serves as the primary benchmark. If your ETF returned 8% while the S&P 500 returned 10%, your fund underperformed its benchmark by 2 percentage points.
Different types of investments use different benchmarks. International stock funds might benchmark against the MSCI EAFE Index. Bond funds typically use the Bloomberg U.S. Aggregate Bond Index. Small-cap funds might compare to the Russell 2000 Index. Choosing the right benchmark is important -- comparing a bond ETF to the S&P 500 would not tell you much because they invest in completely different asset classes.
For index ETFs, the benchmark is the specific index the fund tracks. The fund's goal is to match the benchmark's return as closely as possible. Any difference between the fund's return and the benchmark's return is called tracking error. Good index ETFs have very low tracking error, meaning they faithfully replicate their target index's performance.
Benchmark Example
You own three ETFs and want to evaluate their performance. Your U.S. stock ETF (VTI) returned 12% -- you compare it to the total U.S. stock market index, which returned 12.1%. Your international ETF (VXUS) returned 7% versus its benchmark FTSE All-World ex-US Index at 6.8%. Your bond ETF (BND) returned 2% versus the Bloomberg Aggregate at 2.1%. All three tracked their benchmarks closely, which is exactly what you want from index ETFs.
Why Benchmark Matters for ETF Investors
Benchmarks give ETF investors an objective way to judge whether their investments are performing well. Without a benchmark, you have no context. Earning 8% sounds great until you learn the relevant market returned 15% -- then you know your fund significantly lagged. For ETF investors, benchmarks also help you set realistic expectations. If the S&P 500 has historically returned about 10% annually, you should not expect an S&P 500 ETF to return 15%. Conversely, during a year when the benchmark drops 20%, a 15% decline in your fund actually represents relative outperformance.
Benchmark vs Tracking Error
| Benchmark | Tracking Error |
|---|---|
| A benchmark is a standard index or measure used to evaluate the performance of an investment fund or portfolio. | See full definition of Tracking Error |
While benchmark and tracking error are related concepts, they serve different purposes in the world of ETF investing. Understanding both terms helps you make more informed decisions about which funds to include in your portfolio and how to evaluate their performance.
Related Terms
Deepen your understanding of ETF investing by exploring these related concepts:
Tracking Error
Tracking error measures how closely an ETF follows its benchmark index, with lower tracking error indicating more faithful index replication.
Index Fund
An index fund is a type of investment fund designed to match the performance of a specific market index, such as the S&P 500.
Alpha
Alpha measures an investment's excess return compared to its benchmark index, indicating how much value a fund manager adds or subtracts.
S&P 500 Index
The S&P 500 is a stock market index tracking 500 of the largest U.S. companies, widely considered the best single measure of U.S. stock market performance.
Total Return
Total return measures an investment's complete performance including both price appreciation and income from dividends or interest.
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