Caterpillar, ButterflyDan Passarelli takes a look at Caterpillar (CAT) and making adjustments. The secret weapon for this trade is implied volatility.Author:Dan PassarelliPublish date:Aug 28, 2013 2:14 PM EDTScroll to ContinueTheStreet RecommendsMARKETSDWACTWTRMETADonald Trump Media SPAC Digital World Acquisition Gets Subpoenas Linked To Grand Jury Probe12 minutes agoTECHNOLOGYMSFTBill Gates and George Soros Take Sides in the Abortion Debate19 minutes agoMARKETS^INDU^SPXNKEStocks Edge Higher, Week Ahead, Russian Oil, Nike and Spirit Airlines - Five Things To Know1 hour ago