dont know. look at the volumes from all exchanges are traded on the puts today. the august series. people do book profit. <A HREF="http://quote.cboe.com/QuoteTable.asp?TICKER=qqq&CBOE=on&ALL=0" target="_blank">http://quote.cboe.com/QuoteTable.asp?TICKER=qqq&CBOE=on&ALL=0</A>