Capital markets regulator Sebi has extended the deadline for mandatory confirmation or denial of market rumours by listed companies. The deadline has been extended for the top 100 listed companies by market capitalisation to February 1, 2024, from October 1 this year at present, according to the latest circular by the Securities and Exchange Board of India (Sebi).Similarly, for the top 250 listed entities, the rule will kick in on August 1, 2024, from the current requirement of April 1, 2024.