Activist short-seller Carson Block forecasts a stock-market plunge, says current valuations make 'no sense'

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· *Carson Block of Muddy Waters told Bloomberg that he thinks stocks will go down again after rallying from March lows, and that valuations don't make sense. *
· *"In the medium term, I just can't see equity values anywhere near where they are today," Block said Monday. "The underlying economy is on its knees and I just...