This year has seen some major ups-and-downs in the stock market. While fluctuations have been relatively small, their repetitive nature is significant.
For instance: you may not have noticed on the average day if the S&P 500 ended 1% below its intraday high or 1% above its intraday high, but now consider that it has fluctuated between the two over 70 times in 2018, and those minor shifts start to take on a lot more weight (this intraday fluctuation was recorded six times in 2017).
While the stock market maintains a seemingly placid overall performance on the surface, growing uncertainty over external and domestic economic factors are causing unease among investors, and exposing underlying volatility in the marketplace.