How do market makers make money?

who exactly are classified as market makers ?

how do they make money ?

what are the common algorithmic market making strategies ?

Market Makers might be a bank or brokerage firm , they offer quotes of ask and bid price for a guaranteed number of shares, The market makers provide liquidity in markets

The market maker maintains a spread on each stock he covers (The difference between the ask and bid price) with that difference of spread they will make money with huge traded quantity


I m not sure .
But can u pls tell me how do market makers make money in “liquidbees” ? there is hardly any spread difference .