BTC: Daily Quote - 90-Day High

Bitcoin Daily Quote - 90-Day High was $86,593.8 on 7 Nov 2026 (latest daily value).

Bitcoin's highest daily close over the last 90 days.

Why use it. The recent high marks the top of the quarter's range, often a resistance level. How to read it. Price at the line means a new 90-day high; the gap below it shows how far the price has pulled back.

Calculation. Exact definition: The highest admitted daily closing BTC/USD quote within the trailing 90 days. The line rises when a new high enters the 90-day window and falls when an old peak leaves it. It uses daily closing-boundary quotes, not intraday highs, and a missing quote invalidates every window containing it, with no carry or interpolation. Day D uses the following 00:00 UTC quote; earlier quotes are retrospective closes with unknown publication time, venue and vintage, later ones keep their actual clocks, values are provisional and revisable, and the open day is a labelled partial. rolling_max(a if a > 0, otherwise undefined, 90): the maximum of the latest 90 adjacent daily values of each UTC day's positive admitted ending-boundary BTC/USD quote. Computed over the full retained history before viewport selection, with existing 40-digit Decimal arithmetic.