In futures trading, the convention of red coding comes from the chart display mode in stock and futures trading software, with red candles indicating price increase and green candles indicating price decrease. Therefore, in futures trading, red is usually regarded as a signal of price rise.

Futures are the subject matter that is bought and sold now and delivered in the future, not contracts. The unity and standardization of futures contracts and their characteristics make futures contracts have high market liquidity, and price fluctuations are mainly affected by supply and demand, economic factors and political factors.