Why a top strategist is sticking with his call for stocks to surge 22% even as the trade war roils markets

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• Craig Johnson isn't deterred from his bullish S&P 500 call despite soaring market volatility.
• The Piper Sandler strategist said he still expects the S&P 500 to surge to 6,600 by year-end.
• "When people are vomiting up stocks, you gotta be in there cleaning it up," Johnson said.

In the aftermath of President Donald Trump's "Liberation Day," one strategist on Wall Street was unmoved.

The stock market had just experienced...