K: Max pain attempst to find an exact number. Opex support/resistance attempts to identify a trading range. You can look at the options on any stock or ETF to determine these prices. Take a look at the article in this post to see how it is done: <A HREF="http://www.investorshub.com/boards/read_msg.asp?message_id=4227196" target="_blank">http://www.investorshub.com/boards/read_msg.asp?message_id=4227196</A>