Rally

A sustained period of rising prices in a market or individual security. Rallies can last from days to years and occur in both bull and bear markets -- bear market rallies, also called "dead cat bounces" or "sucker rallies," can be particularly deceptive because they give the appearance of a trend reversal before the broader decline resumes. Traders distinguish between rallies driven by genuine buying interest and those fueled by short covering, which tend to be sharper but shorter-lived.