let's talk to the chairman and ceo of markwest, frank semple. back to "mad money." >> thank you. appreciate it. >> thanks for coming on the show. this morning i was on "squawk on the street" and david faber asked who i had on. i said it was you. within the next hour, same question over and over again. ask him what's the matter? why are they going down? i don't want to put you on the spot for the industry, but the weakness has been profound. what do you think is behind it? it has been an ugly six weeks. may was ugly. mlps as an industry was down 8% during may. we were down significantly more than that. it's driven primarily by uncertainty in the global markets which is impacting commodities and crude oil specifically. a lot of companies have a lot of length in crude. it's tracking, but to me it's irrational when you think about it. >> this is what i want to get at. a lot of the business is fee-based. some of it you hedge, but if you had to put a relationship between an occidental, sun oil, hess versus, say, you. the sensitively is not nearly as g