Stock markets closed marginally lower in highly volatile trade on Monday as gains in private banks helped benchmark Sensex recoup some of the early losses inflicted by allegations against Sebi chief Madhabi Puri Buch and her husband by the US short-seller Hindenburg Research. The 30-share Sensex closed lower by 56.99 points or 0.07 per cent at 79,648.92 with 18 of its constituents ending with losses and 12 with gains. Hindenburg alleged on Saturday that the head of Securities and Exchange Board of India (SEBI), Madhabi Puri Buch, previously held investments in offshore funds also used by the Adani Group. Ms Buch in a separate statement said that her investment in offshore funds mentioned in the Hindenburg report predates her appointment at SEBI by two years. Here are industry leaders and what they have to say on the Hindenburg row.