For example, suppose $100 is a support price level for a certain stock. Is it considered a breakout signal if the price drops below $100 during the trading day, or does it need to close below $100 to be considered a breakout signal? Is it a breakout signal if it drops $0.5 below $100, or does it need to drop more to be considered a breakout signal? To answer these questions, it may depend on your own trading style, risk awareness, and market philosophy.