The US bull market is now officially the longest ever . From the depths of the financial crisis, revived by central bank stimulus, fuelled by technological innovation and finally given a shot of a tax cuts, the S&P 500 has gone 3,453 days without a
drop of 20 per cent, the decline typically associated with a bear market. That edges it past the 1990-2000 bull run that culminated in the dotcom boom.
Like the bull market it surpasses, the rally from March 9, 2009, has also coincided with a technological revolution; in this case the rise of the digital economy and reflected in the reshuffled leadership of the S&P 500.
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