Definition. Spot Volume Delta (VD) is the net difference between buyer-initiated and seller-initiated spot trade volume, for the native asset quoted against USD-related currencies (both fiat and stablecoins).

Technical. Computed per interval within an intraday time frame determined by the chosen data resolution (e.g. hourly, 10-minute). Available for individual exchanges or as an aggregate total across exchanges.

Interpretation. Positive values indicate taker-buy pressure dominated within the interval, negative values indicate taker-sell pressure dominated.