Two big prints in EMC today, which is trading down 56 cents to $26.03. An 18,903-contract block of Jan 17.5 puts traded at 19 cents. Separately, a 16,015 Jan 20 puts traded at 36 cents. Both traded on ISE about an hour apart. Sentiment data from the exchange hints at a closing purchase (firm) in the 17.5s and opening in the 20s (crossed firm-to-firm). 41,000 puts and 7,400 calls now traded in the data storage device maker.