# ACHX Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, ACHX missed two times ACHR's daily return by 71.9 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.

## ACHX daily tracking

Over the 90 days to Nov 4, 2026, ACHX missed two times ACHR's daily return by 71.9 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: 20 of 22 days, from Oct 7, 2026 | NAV (stated) | 7.6 | −5.6 | 1.15% | −8.5 (9 days) | −3.2 (11 days) | −5.3 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price | 62.2 | −4.3 | 12.92% | −11.5 (9 days) | +0.7 (13 days) | −12.2 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 71.9 | −1.9 | 14.70% | +1.3 (26 days) | −4.8 (36 days) | +6.1 | Not significant (t 0.3) |

### ACHX's largest daily misses

The 5 days ACHX strayed furthest from its daily target in the 90 days to Nov 4, 2026, each on its NAV where ETFIQ holds it, else its closing price.

| # | Day | Read on | ACHR moved | Target | ACHX returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Sep 11, 2026 | closing price | +2.39% | +4.77% | +2.27% | −2.50 pts |
| 2 | Sep 30, 2026 | closing price | −1.78% | −3.56% | −1.33% | +2.23 pts |
| 3 | Aug 21, 2026 | closing price | +3.45% | +6.90% | +8.75% | +1.86 pts |
| 4 | Oct 2, 2026 | closing price | −2.78% | −5.57% | −7.15% | −1.58 pts |
| 5 | Oct 5, 2026 | closing price | −3.48% | −6.95% | −5.37% | +1.58 pts |

### Method

The daily miss is ACHX's return each day less two times ACHR'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 20 of the 63 sessions. ACHX ranks 481 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether ACHR 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 ACHX 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

---

Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.
Cite: ETFIQ, ACHX daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/achx/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/achx/tracking/