# STXX Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, STXX missed two times STX's daily return by 25.2 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.

## STXX daily tracking

Over the 90 days to Nov 4, 2026, STXX missed two times STX's daily return by 25.2 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, 22 daily returns | closing price (stated) | 24.7 | −2.0 | 4.82% | 0.0 (10 days) | −3.6 (12 days) | +3.6 | Not significant (t 0.3) |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 25.2 | −3.4 | 5.10% | −3.5 (32 days) | −3.2 (31 days) | −0.3 | Not significant (t −0.0) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 29.6 | −2.2 | 6.17% | +4.2 (68 days) | −9.9 (56 days) | +14.1 | Significant (t 2.1) |

### STXX's largest daily misses

The 5 days STXX strayed furthest from its daily target in the 180 days to Nov 4, 2026, each on its NAV where ETFIQ holds it, else its closing price.

| # | Day | Read on | STX moved | Target | STXX returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Jun 16, 2026 | closing price | +1.23% | +2.46% | +1.27% | −1.19 pts |
| 2 | Jun 17, 2026 | closing price | +3.37% | +6.73% | +7.85% | +1.12 pts |
| 3 | Jun 29, 2026 | closing price | +7.63% | +15.25% | +16.21% | +0.96 pts |
| 4 | Jun 26, 2026 | closing price | −12.24% | −24.47% | −25.41% | −0.94 pts |
| 5 | Jul 21, 2026 | closing price | +11.14% | +22.28% | +21.35% | −0.93 pts |

### Method

The daily miss is STXX's return each day less two times STX'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 its NAV or its target's is not struck at the 4:00 p.m. close. STXX ranks 234 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether STX 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 STXX is listed.

### Where to next

### Sources

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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, STXX daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/stxx/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/stxx/tracking/