Brian Lee
Aug 12, 2025
The spot price is the immediate trading price of a stock or other asset for instant delivery. In formulas we denote the stock’s spot price as \(S_{spot}\). When equations simply reference \(S\), they usually mean this value.
Spot pricing is central to calculations like Daily Volatility (\(DV\)), which rely on the current market price to set expected ranges. For more background on the stock price itself, see Stock Price (\(S\)).