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Stocks that have gained, or increased, in value over a particular period are described as advancers.
If more stocks advance than decline - or lose value - over the course of a trading day, the financial press reports that advancers led decliners. When that occurs over a period of time, it's considered an indication that the stock market is healthy.
- Browse Related Terms: Advance-decline (A-D) line, Advancer, Decliner, Gainer, Loser, Rally, Sell-off