I understand that strike prices of high open interest should be important to the writers; that's where they start losing money. If XYZ is at 200 and I am short a call at 210, though, wouldn't I want to buy the underlying to cover in order to hedge a loss?
What is the theory behind 210 becoming resistance? What are the criticisms of this theory?
What is the theory behind 210 becoming resistance? What are the criticisms of this theory?