This $400 million is not a deficit, but should be used to fill the futures margin for shorting copper, because institutions with spot copper generally choose to short copper futures to lock in risks. Because he is short, the copper price rises (as explained at the beginning of the film), and future positions who is short of copper will lose money on his books and need extra margin. If he survives and Russian copper mines continue to make profits, then the sale of spot copper will bring huge cash flow. At the beginning, the result of copper arbitrage trading in the futures market was that no matter whether the copper price goes up or down, as long as spot copper can ship normally, it will bring huge profits. It was only the temporary control of the Russian government that caused spot copper's transaction to be frustrated, and also caused his company to have cash flow problems and needed to borrow money from others for a short time. However, it is equally commendable that he owns the mining rights of Russian large copper mines. Generally speaking, the company is also valuable, but there is a short-term cash flow problem. This is one of the reasons why the next family who took over his company can tolerate the misappropriation of $400 million in book funds. Sina Weibo: Mochi Guest