ATH — All-Time High

The highest price ever traded. Above it there is no resistance history — only psychology.

Related terms

ATR — Average True RangeIndicator measuring average candle range — a volatility yardstick used for stop sizing.
Average DownAdding to a losing position to lower the entry price — a common account-killer without a plan.
AccumulationA sideways phase where institutions quietly build positions before a markup — often at lows.
Algorithmic TradingAutomated computer systems executing orders by rules, in microseconds — most market volume today.
AltcoinAny cryptocurrency that is not Bitcoin. Higher beta: moves harder than BTC in both directions.
ArbitrageProfiting from price differences of the same asset on different venues — fast, low-risk, institutional.

Terms stick when you use them. The Money Circle academy walks you through them step by step.