News
backtesting
overfitting
5 Backtesting Pitfalls That Make Your Strategy Look Better Than It Is
Five testing errors make a strategy look profitable when it is not: look-ahead bias, survivorship bias, overfitting, ...
Read →
backtesting
performance analysis
How to Detect When Your Trading Strategy Stops Working (2026 Guide)
Strategies stop working for four reasons: regime change, overcrowding, structural market change, or because they were...
Read →
backtesting
performance analysis
Sharpe Ratio vs Sortino Ratio: Which Better Measures Your Trading Strategy?
The Sharpe ratio divides excess return by total volatility, so it penalises a big up month exactly as hard as a big d...
Read →
Algorithmic Trading
RealTest
Engulfing Candle Strategy: Why Buying Below the Previous Low Wins 2026
The textbook engulfing breakout, buying when the close clears the previous day's high, lost money on SPY across repea...
Read →