Here's what Jim Cramer had to say about some of the stocks during the Mad Money Lightning Round:
Arrowhead Research (ARWR) : "This is a great speculative stock."
3M (MMM) : "I am very concerned about this quarter if they don't do a restructuring."
HollyFrontier (HFC) : "This is a great company. That's a great story."
Viper Energy Partners (VNOM) : "I'd say don't buy it up here."
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