A simple moving average (SMA) is just what it sounds like, simply an average of the closing prices in a particular date range.
For instance, a 10D SMA means the average of all closing prices from today to 10 days ago.
It is primarily a technical indicator more relevant for traders.
Comparing average closing prices of different stocks doesn’t tell much, since the absolute stock price can be anything, and irrelevant to how good the company is at its core.
However, since closing prices change daily, it can cause unnecessary noise in price-specific ratios like P/E, P/S, etc. To avoid this, users can implement smoothened out ratios like (50D SMA)/E rather than just P/E as custom filters.
We have added 10, 50, 100, and 200 day SMAs as screener filters