Stock PDF Generator

This tool constructs a market-implied Probability Distribution Function from live option chain data. Bear call spreads and bull put spreads are compiled into a cumulative distribution function; bull call spreads and put spreads produce the reverse CDF. Combining both captures the full option chain for a robust PDF over the chosen strike range.

Each bar represents the probability the stock closes within a bin of width Bin Size ending at that strike. E.g. a bar at $700 with bin size $10 covers [$690, $700].