# BBUL Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, BBUL missed two times BB's daily return by 36.8 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.

## BBUL daily tracking

Over the 90 days to Nov 4, 2026, BBUL missed two times BB's daily return by 36.8 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: 11 of 22 days, from Oct 16, 2026 | NAV | 4.3 | −4.1 | 0.68% | −2.5 (5 days) | −5.4 (6 days) | +2.9 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price (stated) | 40.5 | −3.3 | 8.06% | +6.1 (12 days) | −14.6 (10 days) | +20.7 | Not significant (t 0.9) |
| 90 days to Nov 4, 2026: 12 of 63 days, from Sep 11, 2026 | NAV | 5.0 | −4.8 | 0.77% | −4.3 (6 days) | −5.4 (6 days) | +1.1 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 36.8 | −5.0 | 7.62% | −8.3 (31 days) | −0.1 (30 days) | −8.2 | Not significant (t −0.7) |

### BBUL's largest daily misses

The 5 days BBUL 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 | BB moved | Target | BBUL returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Sep 28, 2026 | closing price | +7.19% | +14.37% | +15.94% | +1.56 pts |
| 2 | Sep 24, 2026 | closing price | +4.18% | +8.35% | +7.17% | −1.18 pts |
| 3 | Oct 14, 2026 | closing price | −2.83% | −5.67% | −6.65% | −0.98 pts |
| 4 | Oct 15, 2026 | closing price | +5.71% | +11.42% | +12.31% | +0.89 pts |
| 5 | Aug 13, 2026 | closing price | +2.51% | +5.02% | +4.16% | −0.86 pts |

### Method

The daily miss is BBUL's return each day less two times BB'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 12 of the 63 sessions. BBUL ranks 343 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether BB 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 BBUL 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, BBUL daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/bbul/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/bbul/tracking/