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Stats › Volatility and VIX › 1% days

The S&P 500 had 8 one percent days in 2017 and 64 in 2018

2017: 8820172018: 646420182025: 56562025Long run average: 5353Long runaverage

2017 and 2018 were adjacent calendar years. Nothing fundamental changed by a factor of eight between them. Sources: Nasdaq Dorsey Wright and Fisher Investments.

The S&P 500 closes more than 1% away from the previous day in about a quarter of all sessions, near enough one a week. That average hides everything: 2017 produced 8 such days and 2018 produced 64. Volatility regimes hold, then change abruptly.

81% days in 2017
641% days in 2018
53Long run average
26%Share of all sessions

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