There are many markets where options are not liquid, e.g. Cocoa, Soybean, etc. and where most of the volume is still done over the phone or through a human broker / chat. Options MM try to make a market for these illiquid markets and hedge it with futures or by back-to-backing it with other clients. At expiry, the cost of delta hedging is usually cheaper than the price vol they sold it for.No idea how an options MM can make money unless its on fees. Hedging crazy stocks or 1 c spreads make it torture to bank. no?
Depending on how the vol is priced, I know MM that can make up to 150$ per contract, but they have access to retail flow (e.g. commodity producers in Nigeria are not really good at calculating the market's vol from an option quote and can hit you with big volumes)
