Lagging Indicator
An indicator that confirms a move after it is under way, typically built by smoothing price over a lookback window.
How it is identified
Test: the indicator averages or smooths past values, so its turning point necessarily follows price's own
Unit
qualitative
In depth
Lag is arithmetic, not a defect to be engineered away: an average of the last twenty closes cannot turn before the closes do, and a longer window means more lag and fewer false signals. Moving averages, MACD and ADX all sit in this group and are used to confirm rather than anticipate. The practical consequence is that a lagging indicator gives up the beginning and the end of every move in exchange for staying out of most noise. That trade-off is the entire design decision behind choosing a lookback period.
Worked example
A 50-day moving average of prices rising steadily by ₹2 a day sits roughly 25 x 2 = ₹50 below the current price. It cannot turn down until the recent closes have already fallen enough to drag the average with them.
Illustrative figures, chosen so the arithmetic is easy to follow. Not a live price and not a valuation of any company.
Educational reference only
This entry explains what “Lagging Indicator” means. It is not investment advice and not a recommendation to buy or sell any security. Any numbers above are illustrative, not live prices, and nothing here predicts price direction or rates a stock. Consider your own circumstances and consult a SEBI-registered investment adviser before acting.