How to Know If You're Actually Beating the Market

"I'm up 22% this year" is not the same as "I'm beating the market." It might be. It might not be. To know for certain, you need to answer three questions that most traders never ask.

Question 1: What Did the Market Actually Do?

The most common benchmark mistake is vague benchmark selection. "The market" could mean:

• S&P 500 (SPY) — 500 large US companies, market-cap weighted
• NASDAQ 100 (QQQ) — 100 largest non-financial NASDAQ stocks, heavily tech-weighted
• Russell 2000 (IWM) — 2,000 small-cap US stocks
• Total market (VTI) — essentially everything publicly traded in the US

If you're running a large-cap tech-heavy portfolio and the NASDAQ is up 28%, being up 22% means you underperformed — even if the S&P 500 only returned 18%.

Rule: Use the benchmark that most closely matches your investment universe. If you mostly trade large-cap tech, QQQ is your benchmark. If you're a sector agnostic stock picker, SPY is fair. If you're comparing a strategy, not a portfolio, use the asset class the strategy trades.

Question 2: Are You Comparing the Right Return Numbers?

Your return and the benchmark return need to be calculated the same way.

If you made deposits or withdrawals during the year, your raw account return is distorted. You need a time-weighted return — the same methodology used to calculate SPY's published return figures.

Comparing your IRR (money-weighted) to SPY's total return (equivalent to TWR for a passive fund) is apples to oranges. You might show higher returns simply because you happened to add capital before a strong month.

Rule: Compare TWR to TWR. AlphaLens uses your broker's native TWR series (Alpaca's profit_loss_pct, IBKR's CPS) and plots it against an index on the same starting baseline.

Question 3: Are You Accounting for Risk?

This is the one most traders skip entirely.

Suppose SPY returned 18% and you returned 24%. You beat the market by 6 percentage points. But if your portfolio had twice the volatility — if you experienced twice the drawdowns, twice the daily swings — did you actually do better?

The professional answer is: not necessarily. Taking twice the risk to earn 33% more return is not an efficient trade. A proper leverage-adjusted comparison might show you underperformed.

The standard way to measure this is alpha in a CAPM framework:

Alpha = Portfolio Return − (Risk-Free Rate + Beta × (Benchmark Return − Risk-Free Rate))

Where Beta is your portfolio's sensitivity to benchmark moves. A beta of 1.5 means your portfolio tends to move 1.5% for every 1% the benchmark moves.

A simpler proxy: compare your Sharpe ratio to the benchmark's Sharpe ratio. If SPY had a Sharpe of 0.5 and you had a Sharpe of 0.8, you generated more return per unit of risk — even if your absolute return was lower.

The Honest Scorecard

Here's a complete framework for evaluating whether you're actually beating the market:

The Uncomfortable Truth About Sample Size

Even if you answer all three questions correctly and show outperformance, there's still the question of whether it's skill or luck.

The academic literature suggests that you need roughly 3–5 years of consistent outperformance to have statistical confidence that it isn't random. One good year in a bull market tells you very little. Two good years through different market regimes starts to mean something.

This is what the Probabilistic Sharpe Ratio (PSR) attempts to quantify: given your Sharpe ratio and the length of your track record, what's the probability that your true Sharpe is above a threshold (usually 0)? A PSR above 95% with a year or more of data starts to be convincing.

What Most "I Beat the Market" Claims Are Missing

The vast majority of retail traders who claim to beat the market are:

1. Comparing to the wrong benchmark (usually SPY when their portfolio has much higher beta)
2. Not adjusting for cash flow timing
3. Measuring a bull market period where nearly everything went up
4. Ignoring their drawdowns, which were often worse than the index
5. Not accounting for time and effort cost (your time has value)

None of this means it's impossible to beat the market. Some active strategies do have genuine edges. But the bar for claiming one is higher than most traders set it for themselves.

How AlphaLens Shows This

AlphaLens plots your equity curve directly against your chosen benchmark, both starting from the same zero baseline at your account inception date. The gap between the two lines is your raw outperformance or underperformance.

The metrics panel shows your risk-adjusted metrics (Sharpe, Sortino, Calmar) so you can compare against the benchmark's equivalent numbers — not just raw returns.

Connect your broker and run the honest scorecard on your own portfolio.