Extended Move
An extended move is a price swing that has already travelled well beyond what recent, typical price action would suggest, usually happening faster than normal too. It's a relative term: there's no fixed number of points or percent that makes a move "extended," it's judged against how that particular stock or market has been behaving in the recent past.
Traders usually spot an extended move by comparing current price action to a reference like average true range (a measure of how much a stock typically moves in a given period), a moving average, or simply recent candles on the chart. If a stock that normally moves 50 cents in an hour suddenly moves $3 in fifteen minutes, that's extended relative to its own history, even though $3 might be nothing for a more volatile stock.
The nuance that trips people up is confusing "extended" with "about to reverse." A move can be extended and still keep going, especially if there's real news or strong volume behind it. Extended just describes the size and speed of the move so far, not a prediction of what happens next. Traders use the label to flag that risk has changed, not to call a top or bottom.
It's also worth separating "extended" from "extended-hours," a different phrase referring to trading before the market opens or after it closes. Same word, unrelated meaning, and mixing them up in conversation causes confusion.
Day traders use "extended" as a risk flag: chasing a move after it's already extended usually means worse entry prices and a higher chance of a sharp pullback, so it affects entry timing and position sizing.
A stock that has been drifting up about $0.20 per 5-minute candle suddenly prints three candles in a row each up $1.50 on rising volume. A trader watching might say "this is getting extended" and either wait for a pullback before entering or tighten their stop if already in the trade, rather than buying the move at its current price.
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