The WPR, or Williams Percentage Range, is a technical analysis indicator used to identify overbought or oversold conditions in a financial market. Ranging from -100 to 0, it measures the closing price relative to the high and low over a specified period. Values above -20 suggest overbought conditions, while values below -80 indicate oversold conditions. Traders often use WPR for potential entry and exit points, aiding in decision-making for buying or selling assets.