The U.S. Securities and Exchange Commission approved regulations that will prevent banks from keeping secret the yields on certain state and local government bonds during the first trading day, Bloomberg News reported yesterday. The SEC on Sept. 21 approved rules that require underwriters to disclose yields on bonds that are not immediately offered for resale to investors, the Municipal Securities Rulemaking Board said yesterday. The board proposed the change in March, which will require more rapid dissemination of information that previously may not have been available to the public until the end of the trading day.
