Yesteray AAPL closed at 600, then AAPL ITM 620 August Put would be around 25. So 100 contracts would cost 100*100*25 = 250K, 25萬. Let's assume Apple beat estimated EPS greatly like last quarter, its stock would be at 650 today easily. Then that short term 620 PUT would be deep in the water, probably worth less than a buck. Your positions would only worth 100*100*1 = 10K, 1萬. So your loss would be 24萬, "那你就會賠掉幾十萬"
Yes, it is the premium費, but still 幾十萬