# IONZ Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, IONZ missed minus two times IONQ's daily return by 48.3 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.

## IONZ daily tracking

Over the 90 days to Nov 4, 2026, IONZ missed minus two times IONQ's daily return by 48.3 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) | 10.4 | −10.4 | 0.84% | −11.3 (7 days) | −9.9 (13 days) | −1.4 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price | 52.5 | −3.6 | 10.42% | −23.5 (8 days) | +7.8 (14 days) | −31.3 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 48.3 | −16.9 | 10.89% | −25.3 (28 days) | −10.1 (35 days) | −15.2 | Not significant (t −0.9) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 50.4 | −19.4 | 18.28% | −17.8 (50 days) | −20.5 (74 days) | +2.7 | Not significant (t 0.1) |
| 1 year to Nov 4, 2026, 251 daily returns | closing price (stated) | 45.7 | −23.0 | 14.00% | −16.0 (110 days) | −28.5 (141 days) | +12.4 | Not significant (t 1.2) |

### IONZ's largest daily misses

The 5 days IONZ 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 | IONQ moved | Target | IONZ returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Jul 28, 2026 | closing price | −5.68% | +11.36% | +1.42% | −9.94 pts |
| 2 | Jul 29, 2026 | closing price | −5.58% | +11.16% | +16.63% | +5.48 pts |
| 3 | Jan 23, 2026 | closing price | −4.22% | +8.43% | +5.53% | −2.91 pts |
| 4 | Aug 31, 2026 | closing price | +0.28% | −0.56% | −3.40% | −2.84 pts |
| 5 | Sep 16, 2026 | closing price | −0.57% | +1.13% | +2.94% | +1.81 pts |

### Method

The daily miss is IONZ's return each day less minus two times IONQ'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. IONZ ranks 69 of 75 2x inverse ETFs on its 90-day average daily miss. Up days and down days split the miss by whether IONQ 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 IONZ 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, IONZ daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/ionz/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/ionz/tracking/