BANKING/FINANCE

Trading Switch: Shares in Landmark Bancorp, the parent company of Landmark Bank in La Habra, began trading this week on a national computerized over-the-counter exchange, a move that will cut the costs of trading the stock and make it more accessible to a wider investor group.

Landmark stock is now listed on the National Market System of the National Assn. of Securities Dealers Automated Quotations. NASDAQ provides price quotations for many New York Stock Exchange companies as well as over-the-counter firms.

Craig D. Collette, Landmark’s president, said the listing gives investors “the best of both worlds” by providing continuous trading and by creating more vigorous competition among many market makers. Until now, Landmark stock had been traded through eight market makers, brokers who dictated the price at which they would buy and sell the company’s stock.