The main capital will definitely affect the price of futures. As speculators in the futures market, they will certainly hope that the greater the price fluctuation, the better, so as to have the opportunity to speculate and make profits. In other words, they are risk guerrillas, different from hedgers. It is hard to say how big the deviation is, but because it can be arbitrage, if the deviation is too large, different investors will arbitrage and lead to the deviation returning to the normal level. Deviations must be frequent, but the closer to the delivery month, the more similar the spot and futures prices are. When the main capital is affected, it is not like stocks, because futures can be short. This makes it difficult to manipulate the futures market. It is recommended not to pay too much attention to the main funds (not to pay no attention)

I hope it helps.