At its most basic level, which type of antitrust violation is a conspiracy between business...

Price fixing occurs when competing firms agree to set prices, fees, or commission rates rather than allowing them to be independently determined. In real estate, this includes agreements among brokers to set commission rates or fee structures—an antitrust violation. Market allocation divides territories or clients, group boycotts are concerted refusals to deal, and tie-in arrangements force the purchase of a second product/service as a condition of sale.