A charting term used by technical analysts and day traders. Inside days are days where the high point of the bar is lower than the previous day's high, and the low point is higher than the previous day's low. Inside days denote reduced volatility in the stock price for that day.
Also known as "inside bars."
Inside days apply to candlestick charting analysis. When several inside days occur consecutively, there is a higher probability that the stock will soon break out of its trading range.