A volume spike is a sharp increase in the amount traded during a particular period compared with a relevant baseline. It describes unusually heavy activity, not necessarily an increase in price, the number of investors, or the amount of new capital entering a market.
Making a fair comparison
If a token’s preceding 20 completed hourly candles average 1,000 tokens traded each, a completed hour with 4,000 tokens has four times that baseline volume. The comparison should use the same market, duration, and units. Token volume and trading value in dollars are different measures; a higher price can increase dollar volume without increasing the number of tokens traded.
An unfinished candle should not be treated as directly equivalent to a completed interval. A single venue’s data also differs from an aggregate across exchanges.
Interpreting the activity
A spike can accompany a rally, a sell-off, or heavy trading with little net price change. Every matched trade has both a buyer and a seller, so total volume alone does not identify which side initiated trades or why.
News, liquidations, or concentrated large transactions may contribute. Analysts examine price response and data quality before drawing conclusions. High volume does not by itself prove a breakout will continue or a reversal has begun.