# AAPB Tracking Error: Up vs Down Days

> Over the 90 days to Nov 4, 2026, AAPB missed two times AAPL's daily return by 13.3 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.

## AAPB daily tracking

Over the 90 days to Nov 4, 2026, AAPB missed two times AAPL's daily return by 13.3 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 | 3.9 | −3.9 | 0.30% | −3.5 (5 days) | −4.2 (6 days) | +0.7 | Not enough days |
| 30 days to Nov 4, 2026, 22 daily returns | closing price (stated) | 12.2 | −4.5 | 2.70% | −12.1 (12 days) | +4.5 (10 days) | −16.5 | Significant (t −2.5) |
| 90 days to Nov 4, 2026: 12 of 63 days, from Sep 11, 2026 | NAV | 4.0 | −4.0 | 0.30% | −3.9 (6 days) | −4.2 (6 days) | +0.3 | Not enough days |
| 90 days to Nov 4, 2026, 63 daily returns | closing price (stated) | 13.3 | −3.0 | 2.85% | −6.8 (33 days) | +1.1 (30 days) | −7.9 | Not significant (t −1.8) |
| 180 days to Nov 4, 2026, 124 daily returns | closing price (stated) | 17.3 | −2.9 | 4.00% | −0.2 (67 days) | −6.0 (57 days) | +5.8 | Not significant (t 1.3) |
| 1 year to Nov 4, 2026, 251 daily returns | closing price (stated) | 16.5 | −2.9 | 3.57% | −2.2 (131 days) | −3.6 (120 days) | +1.4 | Not significant (t 0.5) |

### AAPB's largest daily misses

The 5 days AAPB 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 | AAPL moved | Target | AAPB returned | Miss |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Jun 26, 2026 | closing price | +3.14% | +6.27% | +7.64% | +1.37 pts |
| 2 | Jun 25, 2026 | closing price | −6.12% | −12.24% | −13.01% | −0.77 pts |
| 3 | Dec 19, 2025 | closing price | +0.54% | +1.09% | +0.40% | −0.69 pts |
| 4 | Jun 29, 2026 | closing price | −0.72% | −1.44% | −2.10% | −0.67 pts |
| 5 | Jun 10, 2026 | closing price | +0.35% | +0.71% | +1.34% | +0.64 pts |

### Method

The daily miss is AAPB's return each day less two times AAPL'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. AAPB ranks 60 of 494 2x leveraged ETFs on its 90-day average daily miss. Up days and down days split the miss by whether AAPL 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 AAPB 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, AAPB daily tracking, listed by window, data as of Nov 4, 2026. https://etfiq.com/funds/aapb/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/aapb/tracking/