Morgan Stanley bull sees a clear path toward S&P 3,000

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Case for S&P 3,000

Forget S&P 2,000.

There's a slow and steady path for the stock index to hit 3,000, Adam Parker said Tuesday.

Morgan Stanley's chief U.S. equity strategist said that two things make him a believer: Hubris and debt.

"If you don't see a lot of hubris and you don't see a lot of debt, it's hard to call that top of the cycle," he said on CNBC's "Halftime Report."