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One of JPMorgan's top strategists explained on Thursday how a "market nirvana" could push the S&P 500 nearly 20% higher by the end of next year.
The bank released its 2021 forecast this week, setting its base case target for the S&P 500 at 4,400 for the end of 2021. Dubravko Lakos-Bujas, the bank's chief U.S. equity strategist, explained the reasoning behind the bullish outlook on CNBC's "Halftime Report."