1. Price fluctuation: The pure negative index of futures reflects the market trend by calculating price fluctuation. Fluctuations can be absolute or relative, usually expressed as a percentage.
2. Weighted average: The net negative index of futures is usually the weighted average of the price increase and decrease according to a certain weight. Different weights give different price trends greater influence, thus reflecting market trends more accurately.
3. Cycle length: The calculation cycle length of the net negative index of futures can be determined as required. Common cycles are daily, weekly and monthly. Different cycle lengths reflect the price trend in different time periods.
4. Index numerical range: The numerical range of futures net negative index is generally negative, representing the downward trend of prices. The size and changing trend of value can reflect the strength of the market and the fluctuation of price.
It should be noted that the net reduction index of futures is only a technical index, which is for reference and analysis only. In practice, investors also need to combine other technical indicators and fundamental analysis to make reasonable investment decisions.