Are You Beating the Index? A Fair Benchmark Test

A positive return does not show whether active trading added value. The fair question is whether your account beat a relevant index over the same dates, in the same currency, after cash flows and costs.

The comparison needs a second line: how much drawdown and concentration did you accept to earn that return?

Choose the benchmark that matches what you trade

An Australian share portfolio should not default to the Nasdaq because it produced the most flattering comparison. A US large-cap strategy may use the S&P 500. A concentrated technology strategy may learn more from a technology-heavy index, while still checking a broad market alternative.

Match these features:

• market and investable universe;
• base currency;
• price return or total return;
• start and end dates;
• dividends and fund fees;
• deposits and withdrawals; and
• whether the benchmark represents capital that sat in cash.

If your account is in AUD and the benchmark is in USD, decide whether you are measuring the US asset return or the AUD investor experience. Currency movement can reverse a close comparison.

Align cash flows before comparing returns

A simple ending balance calculation breaks when you add or withdraw money. A $10,000 deposit in May is not investment performance.

For an auditable workflow:

1. Choose the review dates and benchmark before looking at the answer.
2. List every external deposit and withdrawal with its date.
3. Calculate account performance with a method that handles cash flows, such as time-weighted return for manager-style comparison or money-weighted return for your personal capital experience.
4. Apply the same dates to the benchmark.
5. Reinvest benchmark distributions if your account return includes dividends.
6. Convert both series to the same currency.
7. Subtract trading costs and relevant fund fees consistently.
8. Save the inputs so you can repeat the calculation.

Time-weighted return reduces the effect of when you add money. Money-weighted return includes the timing and size of your personal cash flows. They answer different questions, so label the method instead of mixing them.

Two traders can beat the index very differently

Assume a total-return benchmark gains 10% over the review window.

Both hypothetical traders beat the benchmark by five percentage points. Trader A did it with lower drawdown and broader profit contribution. Trader B accepted much more drawdown and depended on two trades.

That does not make Trader B's return fake. It makes the evidence less repeatable. Another review window may show whether those two trades came from a genuine concentrated strategy or a small sample.

Include drawdown, concentration and cash

Return alone rewards leverage and concentration until they fail. Compare:

• maximum drawdown over the same dates;
• time spent below the previous equity peak;
• largest position and sector exposure;
• share of gains from the top one or two trades; and
• average cash allocation.

Cash needs fair treatment. A trader who held 40% cash took less market exposure. Underperforming a fully invested index may be expected, while a smaller drawdown may be the benefit they wanted. State the mandate before judging the result.

For a skill-focused view that normalises each trade by planned risk, use why portfolio returns do not measure trading skill. For the reusable 30-minute review worksheet, continue with the mid-year trading review.

How Swingfolio helps with the comparison

Swingfolio can place your portfolio performance beside a selected benchmark and show drawdown alongside return. Your journal also keeps the trades, fees and position history needed to investigate why the lines differ.

Treat the chart as the start of review. Confirm dates, cash flows, currency and return basis before calling the gap alpha. Then inspect which trades, sectors and risk decisions produced it.

A worked comparison using 2026 data

The first half of 2026 benchmark table

These price-only changes compare the 31 December 2025 close with the 30 June 2026 close. They exclude dividends, fund fees, tax and currency conversion.

The IWM row uses an ETF price proxy for US small caps, not the Russell 2000 index itself. The broad point remains: simply holding different parts of the US market produced materially different first-half results.

September update: the June finish was not the endpoint

From 30 June to 18 September 2026, the Dow price index fell 1.22%, the S&P 500 rose 2.02% and the Nasdaq Composite rose 1.18%. IWM fell 5.44% over the same window.

Those later moves do not change the first-half comparison. They show why “this year” needs exact dates. A trader reviewed on 30 June faces a different benchmark result from one reviewed on 18 September.

Frequently asked questions

Which index should I compare my trading account with?

Choose one that matches your market and investable universe. Record a broad alternative as a secondary reference if your strategy is concentrated.

Should I use price return or total return?

Use total return when your account includes dividends and the benchmark distributions would have been reinvested. Price-only comparisons must be labelled and should not be compared directly with dividend-inclusive portfolio returns.

How do deposits affect benchmark comparison?

Deposits are cash flows, not gains. Use a return method that accounts for their dates and sizes, and apply the same review window to the benchmark.

Is beating the index enough to prove skill?

No. Check drawdown, concentration, leverage, costs and sample size. One period can reflect a favourable market or a few exceptional trades.

Start the 30-day trial to compare your portfolio with a relevant benchmark and inspect the drawdown behind the return in Swingfolio.

General information only. Not financial advice. Trading involves significant risk of loss. Past performance is not indicative of future results. Always do your own research and consider seeking advice from a licensed financial advisor.