Buffer ETFs are built to cap how much an investor can gain over a set period, usually a year, while also absorbing a slice of losses before the investor's own money is at risk. Where a fund sits in that structure changes as the underlying index moves, and the data as of Sep 27, 2026 show a market where a large share of these funds have already used up their room to rise.
Across 429 buffer ETFs from 8 issuers, 140 funds, or 33%, sat at their cap. In index terms, that means those funds have no further upside for the remainder of their current period even if markets keep climbing. Another 262 funds, 61%, remained open, with the median fund still able to gain 5.0% from its current price. A smaller group, 26 funds or 6%, had moved into buffer-working territory, where the fund is now absorbing losses rather than tracking gains one for one. One fund had its buffer exhausted entirely.
The issuer breakdown shows this concentration of capped funds varies. Innovator, the largest issuer in the table with 138 funds, had 50 at cap and 11 with buffers working. First Trust, with 104 funds, had 36 at cap. PGIM, with 44 funds, had 22 at cap, the highest share among issuers of comparable size, while none of its funds had buffers working. Corgi stood out for the opposite reason: only 1 of its 36 funds sat at cap, but 6 had buffers working, more than any other issuer relative to fund count. TrueShares, with 11 funds, had none at cap and none in buffer-working mode. Median expense ratios ranged from 0.30% at Corgi to 0.80% at Innovator, First Trust, and TrueShares.
The reset-month table explains why the cap concentration looks the way it does. Funds resetting soonest, such as the 50 in the Sep 2026 group, show the least remaining cap, a median of just 0.3%, because their reference index has had a full period to climb toward the ceiling; that group also shows the largest index gain since period start, +14.1%, among the earlier months. By contrast, funds resetting further out carry more remaining room: the Aug 2027 group, with 28 funds, shows a median remaining gain of 14.1%, alongside a much smaller index move since period start, +0.6%. The Mar 2027 group is an exception to the general pattern, with 32 funds, 22 at cap, and the largest index move of any month, +18.6%, showing that fresh caps don't guarantee headroom if the index has already run.
Readers using the live desk can check where any individual fund sits today, whether at cap, open, or with its buffer working, along with its remaining upside and downside before the buffer engages, using the issuer's own published data.