The Financial Industry Regulatory Authority said the Securities and Exchange Commission has approved a plan that would require brokerage firms to disclose how much they mark up the price of most bonds they sell to retail customers. The SEC also approved a similar plan by the Municipal Securities Rulemaking Board, which regulates municipal advisers and bond dealers. The two controversial plans aim to help the public assess the fairness of prices charged by brokers for corporate and municipal bonds. Read the original story from Reuters.