Data Domain (DDUP) puts are active as the stock displays relative weakness Thursday. Shares are down 32 cents to $12.98 and 9,171 puts traded, 11X (1100 percent) the normal levels. April 12.5 puts are the most actives. 5,800 traded and 68 percent traded ask-side. Similarly, ISE Sentiment is consistent with 60 percent opening customer put buys. Implied volatility is up to 68.4 from about 65.7 yesterday.