Perth-based stockbroker Patersons Securities Ltd has changed its corporate structure to allow for external investment in the firm after it posted a 2006-07 net profit increase of 82.3 per cent to $9.3 million.

Perth-based stockbroker Patersons Securities Ltd has changed its corporate structure to allow for external investment in the firm after it posted a 2006-07 net profit increase of 82.3 per cent to $9.3 million.