# RBLU Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, RBLU missed two times RBLX's daily return by 27.1 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.

## RBLU daily tracking

Over the 90 days to Nov 4, 2026, RBLU missed two times RBLX's daily return by 27.1 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: 13 of 22 days, from Oct 16, 2026 | NAV | 7.1 | −4.6 | 1.22% | −1.3 (7 days) | −8.4 (6 days) | +7.2 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price (stated) | 29.4 | −2.3 | 5.51% | −6.6 (13 days) | +4.0 (9 days) | −10.6 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 27.1 | −4.6 | 5.03% | −6.9 (36 days) | −1.6 (27 days) | −5.3 | Not significant (t −0.6) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 25.5 | −5.6 | 4.88% | −8.3 (65 days) | −2.4 (58 days) | −5.9 | Not significant (t −1.0) |
| 1 year to Nov 4, 2026, 251 daily returns | closing price (stated) | 31.0 | −7.1 | 6.37% | −6.5 (120 days) | −7.6 (130 days) | +1.1 | Not significant (t 0.2) |

### RBLU's largest daily misses

The 5 days RBLU 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 | RBLX moved | Target | RBLU returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Jan 21, 2026 | closing price | −4.01% | −8.02% | −6.38% | +1.63 pts |
| 2 | Nov 28, 2025 | closing price | +2.48% | +4.96% | +3.40% | −1.56 pts |
| 3 | Feb 18, 2026 | closing price | +0.10% | +0.19% | −1.20% | −1.39 pts |
| 4 | Jan 20, 2026 | closing price | −9.67% | −19.34% | −20.72% | −1.38 pts |
| 5 | Nov 11, 2025 | closing price | −0.65% | −1.29% | −2.48% | −1.19 pts |

### Method

The daily miss is RBLU's return each day less two times RBLX'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 13 of the 63 sessions. RBLU ranks 257 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether RBLX 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 RBLU 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, RBLU daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/rblu/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/rblu/tracking/