ZRO / API3 ratio and spread
1 ZRO = 6.258 API3. Below is the price ratio chart and the regression spread z-score. Hedge ratio β is 0.460 and the correlation between the legs is 0.47.
If you hold ZRO · If you hold API3
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Key numbers
over 373 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 together only moderately — correlation of daily log returns is 0.47, with a hedge ratio of 0.46. Signals from this pair carry more noise than on a tightly linked one.
The spread currently sits at 2.59 standard deviations above its rolling mean — ZRO is expensive relative to API3 by the standards of this window.
Reversion is slow: the spread needs roughly 54 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 mid-range — 68% of the way from the low to the high of the last 373 daily candles.
Frequently asked
How many API3 is 1 ZRO?
1 ZRO is worth 6.25788 API3 at the latest exchange quotes. The figure is the ratio of the two USDT prices and updates every minute.
What is the ZRO/API3 range?
Over the last 373 daily candles the ratio traded between 2.15342 (31.10.2025) and 8.15491 (11.02.2026).
Are ZRO and API3 correlated?
The correlation of daily log returns between ZRO and API3 is 0.47, which counts as a moderate 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 ZRO/API3 spread z-score now?
The z-score is 2.59 — the spread is stretched beyond two standard deviations. It measures how far the regression residual log(A) − β·log(B) sits from its rolling mean, in standard deviations.
Is ZRO/API3 suitable for a pair trade?
The mechanics hold up: correlation is 0.47 and the spread historically covers half the way back to its mean in about 54 days. That is a description of past behaviour, not a forecast or a recommendation.
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.