Sebi proposes changes to index derivative framework to reduce speculation, suggests fewer weekly expiries MoneycontrolSebi begins crackdown on F&O mess, suggests 7 measures to save retail traders The Economic TimesSebi floats consultation paper on strong activity in derivatives segment Zee BusinessSEBI Move To Control Excessive Speculation In F&O, Proposes Seven Measures NDTV ProfitSebi proposes measures to curb speculative trading in index derivatives Business Standard