Stocks have shown incredible resilience during this historic rally.
The S&P 500 is sitting at all-time highs, yet it has been a very long time since we've seen a notable sell-off.
"The S&P has been up 56 of the 88 trading sessions so far," writes Cashin. "That rate of success is not only extremely rare, it is, borderline, unprecedented. Fifty years of experience suggests streaks ultimately end – just ask Joe DiMaggio. For now, enjoy the ride; be wary of rumors; stay very nimble and have a great weekend."
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