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All-Time High (ATH): Meaning in Trading

This page defines an all-time high, walks through a simple example, and covers the details that change how an ATH is measured.

Extrade Pakistan editorial team ·

On this page
  1. What is an all-time high?
  2. A worked example
  3. Where you see the term
  4. Precise definition and edge cases
  5. Related terms
  6. Frequent questions

What is an all-time high?

An all-time high (ATH) is the highest price an asset has ever reached in its recorded trading history.

The term applies to shares, stock indices, gold, currencies and crypto. When price trades above the old record, traders say the market has made a "new ATH" or "fresh ATH." The opposite is an all-time low (ATL), the lowest price on record.

A worked example

This is a hypothetical case, so letters stand in for prices.

Level Y is now the all-time high. X stays in the record as the previous ATH. If the index falls tomorrow, Y remains the ATH until a later trade goes higher.

An ATH is a historical fact. It says nothing about where price goes next.

Where you see the term

Precise definition and edge cases

For experienced traders, "the highest price ever" depends on how the price is measured.

Question Why it matters
Intraday high or closing high? Exchanges and news often report record closes. Charts show the intraday wick, which can be higher.
Nominal or inflation-adjusted? A nominal ATH can still sit below an older peak once inflation is taken into account.
Adjusted for splits and dividends? Adjusted share price histories move older prices, so the ATH level can differ between data providers.
Which data feed? A CFD price can differ from the underlying exchange or futures price. Short history on a feed can also show a false "ATH."
Continuous futures? Rolling from one contract to the next creates gaps, and the record level depends on the roll method. See futures roll.
How long is the history? "All-time" only covers the data that exists. Newly listed assets set new highs often.

Above an ATH there are no earlier prices to act as resistance. Analysts call this "price discovery." Moves there can be fast in both directions.

Trading leveraged CFDs near record levels can lose money quickly. A risk management plan matters more than the record itself.

Frequent questions

What does ATH mean?

ATH stands for all-time high, the highest price an asset has ever recorded.

Is an all-time high a signal to buy or sell?

No. It only describes the past. Whether price rises or falls after a record is not known in advance.

Why do two websites show different ATH values?

They may use closing versus intraday prices, adjusted versus raw data, different feeds, or histories of different lengths.

What is the opposite of an all-time high?

An all-time low (ATL), the lowest price on record.

Does an ATH in a currency pair mean the base currency is strong?

Yes. It means the base currency has never bought more of the quote currency, so the quote currency is at its weakest on record.

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