Annaly Mortgage (NLY) gapped down and is off 54 cents to $17.34 after the company announced an offering of convertible senior notes. Shares sank on the news and options volume is running 4X the average daily. 26K puts and 15K calls traded so far. While Jan12 7.5 puts are the most actives, some investors appear to be using the weakness to inititate bullish trades in Feb and Mar 18 calls. In fact, prior to the announcement this morning, FBR analysts were out with positive comments on NLY, saying they’re buyers at current levels, with the stock trading at 1.05X book and offering a 16.5 percent div. yield.