Moving Average (50 / 200-day)
The average closing price over a recent window (e.g. 50 or 200 days) that smooths out short-term noise to show trend.
What it is
A moving average is the average price over a fixed number of recent trading days, recalculated each day so it 'moves' forward. The 50-day average tracks the medium-term trend and the 200-day tracks the long-term trend. Because it smooths daily fluctuations, the line lags the actual price.
Why it matters
Traders use moving averages to read trend direction and as reference levels; a price above its 200-day average is often called an uptrend, below it a downtrend. The pitfall is that moving averages lag — they confirm trends after they start and can give false signals in choppy, sideways markets.
How it's calculated
A simple moving average sums the closing prices over the chosen number of days and divides by that count; it updates each day by dropping the oldest price and adding the newest.
How Quintarthai uses it
Trend metrics including the 50- and 200-day averages are available across the screener and company pages; explore them on a stock's deep-analysis page.