Need some help to understand the option chain.
Looking at the yellow circle.
1. Who set the 7.70?
x43 means there are 43 contracts on offer?
2. As a seller, can he offer another price and contract?
3. Can he short (sell) if he have no option on hand?
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Comments
These may be orders from market makers, X 43 does represent 43 contracts. Market makers are generally responsible for ensuring market liquidity.The prices they offer are generally based on the theoretical value of the option.