A market-capitalization-weighted index developed by Standard and Poor's consisting of those stocks within the S&P 500 Index that exhibit strong value characteristics. The S&P 500/Citigroup Value Index uses a numerical ranking system based on four value factors and three growth factors to determine the constituents and their weightings. Taobiz explains S&P 500/Citigroup Value Index The value factors include: 1. Book value to price ratio 2. Cash flow to price ratio 3. Sales to price ratio 4. Dividend yield The growth factors include: 1. Five-year earnings per share growth rate 2. Five-year sales per share growth rate 3. Five-year internal growth rate Value and growth style scores are calculated based on the standardized factors.