# NEBX Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, NEBX missed two times NBIS's daily return by 24.8 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.

## NEBX daily tracking

Over the 90 days to Nov 4, 2026, NEBX missed two times NBIS's daily return by 24.8 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) | 30.5 | −9.3 | 5.78% | −7.4 (9 days) | −10.6 (13 days) | +3.1 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 24.8 | −8.4 | 4.74% | −13.6 (26 days) | −4.7 (37 days) | −8.9 | Not significant (t −1.1) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 30.6 | −7.7 | 6.01% | −13.8 (57 days) | −2.6 (67 days) | −11.2 | Not significant (t −1.6) |
| 1 year to Nov 4, 2026, 251 daily returns | closing price (stated) | 30.3 | −7.3 | 6.61% | −11.6 (121 days) | −3.3 (130 days) | −8.2 | Not significant (t −1.6) |

### NEBX's largest daily misses

The 5 days NEBX 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 | NBIS moved | Target | NEBX returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Dec 19, 2025 | closing price | +14.56% | +29.12% | +31.59% | +2.47 pts |
| 2 | Nov 5, 2025 | closing price | +5.84% | +11.69% | +9.94% | −1.75 pts |
| 3 | Dec 18, 2025 | closing price | +3.50% | +7.00% | +5.43% | −1.57 pts |
| 4 | Nov 11, 2025 | closing price | −7.03% | −14.06% | −12.77% | +1.29 pts |
| 5 | Jul 27, 2026 | closing price | +0.06% | +0.12% | −1.00% | −1.11 pts |

### Method

The daily miss is NEBX's return each day less two times NBIS'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. NEBX ranks 230 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether NBIS 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 NEBX 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, NEBX daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/nebx/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/nebx/tracking/