The Securities and Exchange Board of India – SEBI has asked stock exchanges to step up their vigil against flouting of listing norms by companies. In a circular issued from Mumbai today, SEBI has said that there have been instances when multiple listed companies of a single corporate group held almost back to back Annual General Meetings, AGM, on a single day.According to SEBI, such a practice affects the rights of investors to seek clarifications and hold discussions on various matters transacted at the AGM. Hence, SEBI has instructed stock exchanges to step up and equip their monitoring framework to identify and monitor such practices and ensure that the Principles of Corporate Governance are followed in "letter and spirit".SEBI has rejected the explanation mostly given by such companies that their various listed companies mostly have common shareholders and so holding AGMs on single day and at single venue saves time and cost.