Sell: brokerages. Buy: hedge funds. Basically the buy side try to be smarter/better/faster/stronger than everyone else, the sell side try to provide an essenti

Sell: brokerages. Buy: hedge funds. Basically the buy side try to be smarter/better/faster/stronger than everyone else, the sell side try to provide an essential service to the buy side, whether that’s a good platform or liquidity or whatever.