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BlackRock's Larry Fink says we risk a market melt-up, not a meltdown

The Dow and S&P 500 nearing record highs as investors questions about the downside looms. BlackRock's CEO Larry Fink is more optimistic. He says in a CNBC interview that we are at risk of a market melt-up, not a meltdown. Castle Harlan's Chairman and CEO John Castle joins Yahoo Finance's Seana Smith.