Your real return must account for trading fees. Brokers typically charge 0.015%β0.25% per trade, which significantly impacts short-term trading profits.
Example: Buy 100 shares at $50, sell at $65. With 0.1% fee each way, actual return is ~29.82%, not 30%.
Trading $10,000 ten times per month at 0.1% round-trip costs ~$12,000/year in fees β equivalent to losing 12% annually. Reducing unnecessary trades is crucial.