A leveraged ETF promises a multiple of its underlying's daily move, 2x or sometimes more, reset each day. What a holder actually ends up with over weeks or months is a different number, and the gap between the two is the subject here. As of October 9, 2026, across 635 leveraged and inverse ETFs measured over the three months to that date, 510 finished short of their own stated multiple. The median fund finished 5.5 percentage points below what the stated multiple would have produced, having typically moved 6.3% from where that multiple implied.
The mechanism is not a flaw in any one fund. Because the multiple applies to each day's move and then resets, a sequence of daily returns compounds rather than simply adding up. Two up days of 10% followed by a down day of 10% do not net out to the same result as the multiple times the net move over those three days, because the fund is 2x (or whatever the stated multiple is) of each day separately, not of the period as a whole. This is why the gap tracks how much ground the underlying covers along the way, not where it lands at the end. A fund that bounces around a lot before returning to its starting point will show a larger gap than one that moves steadily, even if their final returns look identical.
The data bears this out across holding periods and across volatility bands. At one month, the median fund held 513 of 693 funds short of stated, with underlying volatility around 38% and a median gap of 1.4 points. By three years, only 97 funds in the sample had a long enough run, and the median gap widened to 28 points on volatility of 20%, reflecting that even lower daily swings add up over a long stretch. The volatility breakdown for the three-month window shows the same pattern from another angle: funds tracking underlyings with 0 to 30% volatility had a median gap of 2.0 points, while those above 80% volatility had a median gap of 16.8 points.
A separate question is whether two funds promising the identical multiple on the identical underlying, over the identical days, finish in the same place. They do not. Among 115 underlyings tracked by more than one issuer under the same stated multiple, the spread between the closest and furthest fund ranged from 3.5 to 6.7 percentage points in the cases shown. GME at +2x saw the underlying move 22.5% while GMEC finished -6.3 points from stated and GMEU finished -12.9, a 6.7-point spread between two funds with the same mandate on the same days. MSTR at +2x showed a comparable 6.6-point spread across four issuers.
Readers can look up any individual fund's stated multiple, its mapped underlying, and its measured distance from that multiple over each holding window on ETFIQ's fund pages.