Uniswap 24h DEX Volume IndexUniswap 24h DEX Volume Index

The traded price and the index are different numbers: the index is the measured value, while the price is set by trading and moves freely around it. Funding is what ties them together — positions pay or earn a rate set by the gap between the mark price and a 1-hour average of the index (price above index: longs pay shorts; below: shorts pay longs), which pulls the price back toward the index.