Stock index futures is a financial derivative, which is a futures contract with stock index as the subject matter. Increasing positions means that investors increase their positions in the stock index futures market every day. This mode of operation is usually used to participate in short-term trading opportunities in the market.

For those investors who are familiar with the stock index futures market, increasing positions is a common investment strategy. This strategy is often used to increase the capital of the original position and make use of short-term market fluctuations to earn the trading price difference. Therefore, this mode of operation requires investors' keen grasp of the short-term market conditions and flexible operation ability.

However, although increasing positions can bring certain investment returns to investors, we should also pay attention to market risks. In the stock index futures market, the volatility is large, so investors need to have enough risk awareness and risk control ability to avoid losses caused by excessive market volatility. Therefore, investors need to establish a standardized investment plan and a strict risk control scheme to ensure the investment benefit and stability when they hold increasing positions.