Paper trading, order execution, risk controls

This lesson is for enrolled learners

The concept in plain words A backtest that looks great on historical data can still lose money live, for reasons a backtest structurally cannot capture: real order books have spreads that widen exactly when you need liquidity most, fills are sometimes partial, and a bug that silently produced a wrong-but-harmless number in a backtest now places a real order. The……

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