Joh64 MMs are not scared to lose control. They have absolute control. They use algorithms to determine the trade activity that maximizes profits in their pockets. Its a business and they are out to make a profit. Shareholders are retail buyers so we shareholders are the MMs profit center. MMs as part of the process sell shares they don't own but once sold have to deliver. They have many different options available to them including substituting like shares and so on. It all comes under the market maker creating market liquidity on stocks that would otherwise have limited demand. Unfortunately its generally the retail buyer that has the greatest risk since the lenders are cashed out, the company received the loan funds, the MM recoups capital investments including profits and retail shareholders depend on the CEO and BOD to actually make a company profitable and show earnings that in turn creates retail demand