The point at which gains equal losses.
Or, the market price that a stock must reach for option buyers to avoid a loss if they exercise. For a call, it is the strike price plus the premium paid. For a put, it is the strike price minus the premium paid.
或，期权买方要在无损失的情况下行使期权股价必须达到的水平。对于买入期权而言，相等于行使价格+已付溢价。对于出售期权，相等于行使价格 - 已付溢价