A sustained period of rising market prices and optimism.
A bull market is an extended stretch in which prices climb and investor confidence is high, often defined as a rise of 20% or more from a recent low. Bull markets can last years, but they tempt investors to chase returns and abandon their plan. Staying invested through full cycles is what captures their gains.
During a bull market, a disciplined investor keeps contributing and rebalancing rather than chasing hot stocks.