Bitcoin's a Pretty Good Guide to Animal Spirits in Stocks

(Bloomberg) -- Bitcoin may not cut it as a currency in Mark Carney’s eyes, but it has at least one other use: it’s a pretty good measure of animal spirits.

There’s a remarkable similarity in chart movements of the digital token and the forward price to earnings ratio of stocks in the S&P 500 Index. The valuation measure peaked on the very same day as the cryptocurrency back in December, and hit a low days after Bitcoin bottomed out.

Bitcoin's a Pretty Good Guide to Animal Spirits in Stocks

“The price of Bitcoin is worth watching,” Morgan Stanley analysts including Michael Wilson wrote in a report Monday. “While we do not expect this relationship to continue to hold so tightly we do think it will be hard for price-to-earnings to move significantly higher or lower without a commensurate move in the digital currency.”

Morgan Stanley notes that Bitcoin has been leading the way, making it a useful indicator. It bounced off its 200-day moving average (according to Bloomberg generic pricing) just a week before the S&P did on Monday. And the correlation between the earnings ratio and cryptocurrency has nudged higher after turning positive in the middle of last year.

Bitcoin's a Pretty Good Guide to Animal Spirits in Stocks

Bitcoin plunged more than 40 percent this year and trades at $8,063, while the valuation gauge is at the lowest in almost two years.

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