How Many Trades Are Needed Before You Can Judge a Trading Strategy?
How many trades are enough to judge a trading strategy? Learn how sample size, win rate, expectancy, market regimes, drawdown and…
Why Can a High Win Rate Strategy Still Lose Money?
A high win rate does not guarantee profitability. Learn how average win, average loss, expectancy, risk-to-reward, drawdown and trading costs…
How Can Traders Tell Whether a Strategy Is Overfitted to Historical Data?
Learn how to detect trading strategy overfitting using out-of-sample testing, walk-forward analysis, parameter stability, market-regime…
Why Do Trading Strategies Stop Working During Different Market Conditions?
A trading strategy can work extremely well for several weeks and then suddenly start producing losing trades. Many traders immediately…
Why Does Forex Volatility Suddenly Disappear During Certain Hours?
Forex is a 24-hour market, but that does not mean it moves with the same speed throughout the day. There are periods when EUR/USD, GBP/USD or…