A forward price is calculated by determining where a synthetic long option position would break even. A synthetic long is a combination of a long at-the-money (ATM) call and a short ATM put. This option strategy replicates a long stock position in that its payoff diagram matches a long stock diagram, except that the fundamentals or pricing discrepancies of the options vs. the stock may shift the chart to a higher or lower breakeven point.
Each of the types of analytics are provided for 10, 20, 30, 60, 90, 120, 150, 180, 270, 360, 720, and 1080 calendar day future terms. The values for these terms are linearly interpolated from the nearest straddling option expirations. For example, the 30-day put/call ratio would be the linear interpolation of the put/call ratios for the data at the 27-day and 34-day expirations (assuming those are the closest straddling expirations). If the term does not have a pair of straddling expirations, the values from the closest expiration are used.
The stocks are ranked on the percent difference between the forward price and the current price of the stock