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Definition · Markets

What is All-time high (ATH)?

The highest price an asset has ever traded at, in a stated currency.

ATH is a fact about the past with no predictive content, though it is frequently deployed as though it had some. It is also currency-dependent: an ATH in one fiat currency need not be one in another.

Its main practical relevance is psychological: it is the level above which no holder is underwater, which changes the composition of who might sell.

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This definition is part of the Bitcoin Logical glossary. For the fuller explanation, start with Learn, or see the live numbers on The Bitcoin Signal.