Please tell me if I’m correct: 1. Sell futures contract At $15 (bearish position) 2. Buy futures at TSA when it’s negative - an equal amount to the ones u sold-

Please tell me if I’m correct: 1. Sell futures contract At $15 (bearish position) 2. Buy futures at TSA when it’s negative - an equal amount to the ones u sold- to cover the futures you initially sold So basically they sold the contract earlier in the day for a higher price and then and covered their position at a much lower price. Assuming I’m correct: My question is, doesn’t this require margin? If so, how much? What was their initial cash position?