A bonus certificate that has an additional feature: a cap or upside limit. The cap technically increases the safety buffer and thus provides more bonus protection and/or a downside cushion against losses. However, the holder can participate in capital gains (upside moves of the underlying) only up to the upside limit. Below this limit, participation is at 1:1 (perfect correlation with the movement of the underlying price). If the safety threshold of this certificate is not breached during its term to maturity, the holder will earn a given percentage (e.g., a 10% return). But if it is breached, the holder immediately turns to participation at 1:1 in any further losses recorded by the underlying.