The 200-day moving average (MA200) is the average closing price of a stock over the last 200 trading days — roughly a year of market activity. It's one of the most widely used long-term trend indicators, used by both individual investors and institutional managers.
Why it's useful
A stock's price moves every day due to short-term noise: news, quarterly results, general market moves. By averaging over such a long span, the MA200 smooths out that noise and reveals the underlying direction. When the price is above its MA200, the underlying trend is bullish; when it's below, it's bearish.
Why the scanner uses it as a filter, not just a data point
A stock can have an attractive RSI and high volume on a single day and still be in an underlying downtrend — in other words, a bounce within a decline, not the start of something sustainable. That's why in the scanner's score, being above the MA200 is worth 25 of 100 points: it's the filter that prevents confusing "it moved a lot today" with "it's in a real uptrend."
Its limits
The MA200 reacts with a lag, by design: averaging 200 days means it takes time to reflect recent changes. That means it confirms trends already in place, but doesn't anticipate turns. It also says nothing about the quality of the business behind the stock — it's a purely price-based indicator. That's why DSMarketLearning combines it with fundamental indicators (P/E, PEG, debt) rather than using it alone.
This article is educational content, not personalized investment advice. Before making decisions, read our disclaimer.