Rally built 'more on sand and less on stone,' need to watch global trade tensions: pro
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Rally built 'more on sand and less on stone,' need to watch global trade tensions: pro

Alex Dryden, global market strategist at J.P. Morgan Asset Management, and David Zervos, chief market strategist at Jefferies, join CNBC's "Squawk on the Street" to discuss the G-20 summit and global trade tensions.
03:22
Fri, Jun 28 201911:01 AM EDT