# JBLG Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, JBLG missed two times JBL's daily return by 38.8 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.

## JBLG daily tracking

Over the 90 days to Nov 4, 2026, JBLG missed two times JBL's daily return by 38.8 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: 20 of 22 days, from Oct 7, 2026 | NAV (stated) | 7.2 | −6.5 | 1.00% | −6.1 (10 days) | −6.8 (10 days) | +0.7 | Not significant (t 0.2) |
| 30 days to Nov 4, 2026, 22 daily returns | closing price | 47.2 | −3.2 | 9.72% | +17.1 (11 days) | −23.6 (11 days) | +40.7 | Not significant (t 1.6) |
| 90 days to Nov 4, 2026: 22 of 63 days, from Sep 10, 2026 | NAV | 7.2 | −6.6 | 0.97% | −6.6 (11 days) | −6.5 (11 days) | 0.0 | Not significant (t −0.0) |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 38.8 | −6.7 | 7.97% | +2.3 (33 days) | −16.6 (30 days) | +18.8 | Not significant (t 1.5) |

### JBLG's largest daily misses

The 5 days JBLG 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 | JBL moved | Target | JBLG returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Aug 7, 2026 | closing price | −1.00% | −2.00% | −3.07% | −1.07 pts |
| 2 | Oct 2, 2026 | closing price | +1.54% | +3.08% | +4.07% | +0.99 pts |
| 3 | Oct 5, 2026 | closing price | −1.14% | −2.28% | −3.09% | −0.81 pts |
| 4 | Oct 1, 2026 | closing price | +4.51% | +9.01% | +8.25% | −0.76 pts |
| 5 | Aug 19, 2026 | closing price | −4.68% | −9.36% | −10.11% | −0.75 pts |

### Method

The daily miss is JBLG's return each day less two times JBL'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 22 of the 63 sessions. JBLG ranks 361 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether JBL 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 JBLG 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, JBLG daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/jblg/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/jblg/tracking/