What is an ATH (all-time high)?

You see a headline saying “Bitcoin hits a new ATH” and wonder whether you’ve missed the boat? The headline tells you a price record was set, not what will happen next.

Think of it like an athlete’s personal best. If a hypothetical cryptocurrency had reached as high as €10 and later trades at €12, it has a new all-time high. If it then drops back to €9, the ATH stays at €12 until it is surpassed. The price doesn’t have to stay at that level for long for the record to count.

There is one detail, though: the ATH depends on the reference currency and the data source. A crypto may hit an all-time high in euros but not in dollars because of exchange-rate moves. Different exchanges or price-tracking services may also show slightly different records.

Why it matters

The ATH gives you a benchmark for the price’s path. When you read that a token is 50% below its all-time high, you know how far it is from that peak. Watch the math: if it falls from €10 to €5, it needs a 100% gain, not 50%, to get back to €10.

We find this measure useful for understanding the distance from a previous record, not for judging whether a project is good or bad. A previous peak is no promise of a return, and a new record doesn’t guarantee the rally will continue.

What to watch out for

Check whether the figure refers to the highest price reached even for an instant or to the highest daily close. They aren’t the same. In markets with low liquidity, a small trade can create a momentary spike that doesn’t represent the price at which everyone could sell.

Also, the all-time high in price doesn’t necessarily coincide with the all-time high in market cap. Market cap also depends on how many coins are in circulation, a number that may have changed since the previous record.