Prohibition of fraudulent dealing in securities forbids manipulative, deceptive or deceitful practices in listed securities transactions. Regulation 3 prohibits a range of fraudulent and unfair trade practices in relation to securities listed or proposed to be listed on a recognized stock exchange: buying, selling or dealing in a fraudulent manner; using manipulative or deceptive devices or contrivances in connection with issue, purchase or sale; employing any device, scheme or artifice to defraud; and engaging in any act, practice or course of business that operates or would operate as fraud or deceit in contravention of the Act, its rules or regulations.