An amendment to the Securities Exchange Act of 1934 to prohibit national securities exchanges from offering volume-based transaction pricing in connection with the execution of agency-related orders in certain stocks has been proposed by the SEC. The exchanges would be required to have certain anti-evasion rules and written policies and
SEC move on volume-based exchange transaction pricing prompts dissent over basis of ‘fears for tiers’

SEC proposes rule on volume-based exchange transaction pricing.
