The Piotroski method analyzes stock fundamentals using the Piotroski Score, a metric developed by accounting professor Joseph Piotroski. It helps value investors identify potentially undervalued stocks with strong financial health. The score ranges from 0 to 9, with higher scores indicating better financial performance. If the score is between 4 to 6, it is an average investment and requires deep study before investing. A score between 7 to 9 is highly recommended by experts. The score is based on nine binary criteria related to profitability, leverage, liquidity, and operating efficiency. If each criterion is met, it contributes one point, resulting in a maximum score of 9. Reliance Industries and HDFC Bank have a Piotroski score of 6 and 5, respectively.