What Licenced Brokers Do?
In stock market trading, licensed stockbrokers are mainly responsible for matching the bid and asking prices, although the transaction was generally carried out electronically. If a company's stock price rises due to an increase in share demand, the person holding the stock will see their value rise. They can then continue trading shares and try to cash in on the price hike by selling their shares or hold on to them in the hope that their price will continue to rise.