# COZX Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, COZX missed two times CORZ's daily return by 47.5 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.

## COZX daily tracking

Over the 90 days to Nov 4, 2026, COZX missed two times CORZ's daily return by 47.5 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) | 53.5 | −6.2 | 10.04% | +32.7 (11 days) | −45.1 (11 days) | +77.8 | Significant (t 3.6) |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 47.5 | −8.8 | 9.35% | −6.0 (29 days) | −11.3 (34 days) | +5.2 | Not significant (t 0.3) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 44.6 | −7.7 | 8.63% | −6.2 (57 days) | −9.0 (67 days) | +2.8 | Not significant (t 0.3) |

### COZX's largest daily misses

The 5 days COZX 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 | CORZ moved | Target | COZX returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Aug 11, 2026 | closing price | +1.65% | +3.29% | +1.85% | −1.45 pts |
| 2 | Nov 3, 2026 | closing price | +13.87% | +27.75% | +29.09% | +1.34 pts |
| 3 | Aug 14, 2026 | closing price | +2.02% | +4.04% | +2.76% | −1.29 pts |
| 4 | Jun 12, 2026 | closing price | +1.40% | +2.79% | +1.63% | −1.16 pts |
| 5 | Jun 8, 2026 | closing price | +5.03% | +10.06% | +8.91% | −1.15 pts |

### Method

The daily miss is COZX's return each day less two times CORZ'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. COZX ranks 426 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether CORZ 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 COZX 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, COZX daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/cozx/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/cozx/tracking/