The Innovator U.S. Equity Power Buffer ETF is engineered to mirror the returns of the SPDR S&P 500 ETF Trust (SPY). It provides a protective layer for investors by absorbing the first 15% of any losses experienced over a specified period. However, potential gains are subject to an upper limit, or "cap," set in advance for that same duration. This ETF can be held indefinitely, as its buffer and cap mechanisms are recalibrated approximately once a year at the conclusion of each investment cycle.