DAILY PRICE MOVE
How Daily Move Is Derived From Historical Volatility
One of the core measurements used in Tactical Trading is something called Daily Move. This concept helps estimate how far a stock is likely to move during a normal trading day based on its recent historical behavior. Rather than guessing where price might go next, Daily Move provides a practical way to measure the stock’s typical price range and use that information for trade planning.
The foundation of Daily Move comes from historical volatility. Historical volatility measures how much a stock’s price has actually fluctuated over a specific period of time, usually based on a stock’s daily closing prices over the previous 20 trading days. This creates a statistical view of how active or quiet the stock has been. A stock with larger price swings will have higher historical volatility, while a slower-moving stock will show lower volatility.
The concept of the Daily Move takes that annualized volatility measurement and converts it into something more useful for day-to-day trading: an estimated average daily price movement. Since volatility is often expressed as an annual percentage, it must be adjusted to reflect a single trading day. This is done using the square root of time principle commonly used in options pricing and risk modeling.
The basic idea looks like this:
Daily Move = Stock Price × (Historical Volatility ÷ √252)
The number 252 represents the approximate number of trading days in a year. Dividing by the square root of 252 converts annual volatility into an expected one-day move. The result is then multiplied by the current stock price to produce a dollar-based estimate of the stock’s normal daily movement.
For example, if a stock is trading at $100 and its historical volatility suggests a typical daily move of 2%, the Daily Move would be about $2. This does not predict exactly where the stock will close tomorrow. Instead, it creates a realistic working range that helps define buy points, sell targets, and position adjustments inside the Tactical Trading System.
This is why Daily Move is so important. It transforms abstract volatility statistics into a practical decision-making tool. Instead of relying on emotion or market opinions, Tactical Trading uses this measured daily range to structure trade execution around how the stock normally behaves. It is one of the key ways the system turns volatility into opportunity.