All-time high
What does an all-time high mean, and how is that different from the highest price reached in the past year?
In plain words
An all-time high is a price above every price the asset has ever traded at, measured over its entire history. The highest price of the past year only covers a recent window, so it can sit far below the record when the market has risen for a long stretch without a deep interruption.
Why it matters
The two benchmarks describe different things. At an all-time high there is no earlier buyer sitting on a loss above the current price, so no overhead supply from past peaks; at the yearly high the asset may still be far below older records. The gap between them shows how much of the history a recent rally has covered.
In a real week: BTC, week of 9 December 2024
In the week of 9 December 2024, BTC reached 105,250.00 on Sunday at 23:00 UTC and closed the week at 104,463.99, with below_52w_high_pct at 0.0, meaning that close stood level with the highest close of the past 52 weeks. The dataset spans 356 weeks, so the 52-week window covers only part of the available history, and the year's peak and the record are measured over different lengths.
A common mistake
Treating the highest price of the recent year as a record. That peak only shows the price is the top of a rolling window; older prices may still stand above it.