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What Is a Buffered ETF and How Does It Protect Your Portfolio?

A buffered ETF, also called a defined outcome ETF, is an exchange-traded fund designed to absorb a preset percentage of market losses over a specific outcome period, typically one year, in exchange for capping the upside gains an investor can receive.

Moore Invested

For example, a standard buffer ETF might protect against the first 10% of losses in the S&P 500 over its outcome period while capping gains at approximately 15% to 20%. If the market falls 8%, the investor experiences no loss. If it falls 20%, the investor absorbs only the 10% beyond the buffer. According to Morningstar data through the end of 2025, the defined-outcome ETF category had grown to approximately 420 funds holding around $78 billion in assets, making it one of the fastest-growing ETF categories over the prior three years. Buffer ETFs have attracted increased interest in 2026 following significant market volatility in early 2025 and early 2026. A critical detail: the buffer and cap apply only to investors who hold the fund for its full outcome period and purchase at the start of that period. Investors who buy mid-period may receive different protection than the fund’s name implies. Average fees run approximately 0.77% annually, higher than passive index funds, reflecting the cost of the options structure underlying the protection.

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