# GLXU Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, GLXU missed two times GLXY's daily return by 32.1 basis points a day on average, on its closing price.

Data as of Nov 4, 2026. Rebuilt every trading night.

As of Nov 4, 2026 . Rebuilt every trading night.

## GLXU daily tracking

Over the 90 days to Nov 4, 2026, GLXU missed two times GLXY's daily return by 32.1 basis points a day on average, on its closing price.

| Window | Read on | Average daily miss, bp | Signed average, bp | Tracking error | Up days, bp | Down days, bp | Up less down, bp | Confidence |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 30 days to Nov 4, 2026: 13 of 22 days, from Oct 16, 2026 | NAV | 14.0 | −8.1 | 3.37% | +3.0 (6 days) | −17.6 (7 days) | +20.5 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price (stated) | 32.9 | −3.9 | 7.51% | +5.9 (8 days) | −9.5 (14 days) | +15.4 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 32.1 | −5.8 | 6.56% | −4.6 (29 days) | −6.8 (34 days) | +2.2 | Not significant (t 0.2) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 37.5 | −7.5 | 7.65% | −11.3 (56 days) | −4.4 (68 days) | −6.8 | Not significant (t −0.8) |
| 1 year to Nov 4, 2026, 251 daily returns | closing price (stated) | 38.4 | −6.9 | 7.95% | −5.8 (122 days) | −8.0 (129 days) | +2.2 | Not significant (t 0.3) |

### GLXU's largest daily misses

The 5 days GLXU strayed furthest from its daily target in the 1 year to Nov 4, 2026, each on its NAV where ETFIQ holds it, else its closing price.

| # | Day | Read on | GLXY moved | Target | GLXU returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Dec 18, 2025 | closing price | −1.32% | −2.63% | −4.44% | −1.81 pts |
| 2 | Feb 6, 2026 | closing price | +17.34% | +34.68% | +36.29% | +1.61 pts |
| 3 | May 14, 2026 | closing price | +3.99% | +7.98% | +6.53% | −1.46 pts |
| 4 | Jun 8, 2026 | closing price | +21.36% | +42.72% | +41.29% | −1.43 pts |
| 5 | Jun 26, 2026 | closing price | +3.54% | +7.08% | +5.65% | −1.42 pts |

### Method

The daily miss is GLXU's return each day less two times GLXY's return that day. A basis point is a hundredth of a percentage point. Each window is read twice where ETFIQ holds both NAVs: on NAVs, and on closing prices. It is stated on the closing price because NAVs for 13 of the 63 sessions. GLXU ranks 304 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether GLXY rose or fell; Significant means the gap is at least two standard errors from zero. The average miss carries its sign: a negative one is what the fund kept below its target each day, its fees and financing among it. Not every fund here has traded for a year, and a number over eight months does not order against one over twelve. This page lists each fund with its window and dates instead of ranking them. It becomes a ranking on the night four of them share a full year. Every window ETFIQ can measure for GLXU is listed.

### Where to next

### Sources

Links are sources, not endorsements.

A ranking is not a recommendation or an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources

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Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.
Cite: ETFIQ, GLXU daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/glxu/tracking/
Licence: https://etfiq.com/license/ Data ETFIQ computes is free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.
HTML: https://etfiq.com/funds/glxu/tracking/