FYI: Today marks the end of the third quarter of 2017. There have been 188 trading days so far this year, and the S&P 500 has experienced an average absolute move of +/-0.31% on these days.
As shown in the chart below, historically, the S&P 500 has averaged a daily change of +/-0.73% over the first 188 trading days of any given year.
Regards,
Ted
https://www.bespokepremium.com/think-big-blog/2017-least-volatile-year-since-1964/