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- The stock market's latest rally is set to fizzle, according to JPMorgan's Marko Kolanovic.
- He highlighted a number of looming concerns for investors, from valuations to higher-for-longer interest rates.
- "We believe that equities will soon revert back to an unattractive risk-reward," Kolanovic said.
Last week's stock market rally is about to fizzle, according to JPMorgan's chief global markets strategist Marko Kolanovic.