There are some ratios which are specific to Magic Formula, which is a part of my initial hypothesis. These are:
Return on Capital (ROIC) = EBIT/(Net working Capital + Net Fixed Assets)
Earnings Yield (EY) = EBIT/Enterprise Value
EBIT: is calculated as the trailing twelve months operating profit if available
Net Working Capital: is calculated as Total Current Assets – Excess Cash – Total Current Liabilities if Total Current Assets exceeds Total Current Liabilities, otherwise it is zero
Net Fixed Assets: is calculated as Total Assets – Total Current Assets – Total Intangible assets
Enterprise Value: is calculated as Market Cap + Long-Term Debt + Minority Interest + Preferred Stock – Excess Cash. If the returned value for Enterprise value is negative, then a default value of 1 is used.
For a more comprehensive overview on different financial ratios, please refer these important links –