ARB / ETH ratio and spread
1 ARB = 7.2E-5 ETH. Below is the price ratio chart and the regression spread z-score. Hedge ratio β is 0.505 and the correlation between the legs is 0.75.
If you hold ARB · If you hold ETH
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Key numbers
over 1317 daily candles
How each of these is computed: regression spread, hedge ratio, spread z-score, half-life, correlation.
What the numbers say
The legs move closely together — correlation of daily log returns is 0.75. The fitted hedge ratio is 0.51, meaning roughly 0.51 units of ETH exposure balance one unit of ARB.
The spread is at 1.23 standard deviations from its rolling mean: away from the norm, but not far enough to call it stretched.
Reversion is slow: the spread needs roughly 608 days to cover half the way back to its mean. A position would have to be held for a long time.
The current ratio sits near the bottom of its range — only 4% of the way from the low to the high of the last 1317 daily candles.
When this happened before
Divergences over 1138 candles: 8. Closed by a return to the norm: 7. The median return took 84 days, the longest one 195 days.
The last closed one ran from 15.08.2026 to 23.08.2026, 8 days: peak z = -2.02, ETH was expensive against ARB.
One is running right now: it started on 05.09.2026, has lasted 54 days, peak z = 3.76, ARB was expensive against ETH. It has not returned to the norm yet.
For a holder this answers not “what to do” but “how long it usually took”: the median return is 84 days. That is no guarantee — past divergences closed, this one may not.
| Period | Expensive leg | Peak z | Return |
|---|---|---|---|
| 15.08.2026 — 23.08.2026 | ETH | -2.02 | 8 d |
| 10.10.2025 — 23.04.2026 | ETH | -4.21 | 195 d |
| 06.02.2025 — 10.05.2025 | ETH | -2.25 | 93 d |
| 30.11.2024 — 21.12.2024 | ARB | 3.06 | 21 d |
| 18.06.2024 — 27.09.2024 | ETH | -2.13 | 101 d |
A divergence here is the spread z-score leaving ±2σ; the return is the first value back inside ±0.5σ. Two thresholds rather than one: otherwise chatter right at the border would count as a dozen separate divergences. The first bars of the window are skipped — there z is computed on partial history.
Frequently asked
How many ETH is 1 ARB?
1 ARB is worth 0.00007203732022887 ETH at the latest exchange quotes. The figure is the ratio of the two USDT prices and updates every minute.
What is the ARB/ETH range?
Over the last 1317 daily candles the ratio traded between 0.000035897719114155 (30.08.2026) and 0.00092287 (04.01.2024).
Are ARB and ETH correlated?
The correlation of daily log returns between ARB and ETH is 0.75, which counts as a strong link. Log returns are used rather than prices: two rising assets correlate almost by default, joint day-to-day movement is what matters.
What is the ARB/ETH spread z-score now?
The z-score is 1.23 — the spread is within its usual range. It measures how far the regression residual log(A) − β·log(B) sits from its rolling mean, in standard deviations.
Is ARB/ETH suitable for a pair trade?
The mechanics hold up: correlation is 0.75 and the spread historically covers half the way back to its mean in about 608 days. That is a description of past behaviour, not a forecast or a recommendation.
How often do ARB and ETH diverge?
Over 1138 daily candles the spread left ±2σ 8 times. The median return to the norm took 84 days.
Related pairs
Other pairs sharing a leg with this one.
All figures are computed from exchange data and describe past behaviour. Nothing here is investment advice.