If you make a market, you hold a large enough percentage of a stock to be able to change its price.
Dealing via brokers is more expensive than direct exchange, and larger banks try to make a market between themselves before engaging a broker's services.
Closely held companies issuing options must decide on how to make a market for them once they are exercised.
If you make a market, you hold a large enough percentage of a stock to be able to change its price.
Necesitaría saber cómo se dice esto en español. Saludos.