Rankings Across Categories

Amazon book ranks for Trend Following across categories today:

#510 > All Books
#77 > All Books > Business & Investing
#12 > All Books > Business & Investing > Investing
#2 > All Books > Business & Investing > Investing > Stocks
#2 > All Books > Business & Investing > Investing > Futures
#1 > All Books > Business & Investing > Investing > Options