Mumbai, August 12 (IANS): India's capital markets regulator has found no signs of manipulation in the newly introduced closing auction session, Securities and Exchange Board of India (SEBI) Chairman Tuhin Kanta Pandey said on Wednesday, amid concerns raised by some market participants over the new mechanism. Speaking at an event in Mumbai, Pandey described the closing auction session as a major market structure reform that brings Indian markets closer to global best practices. He said SEBI is reviewing feedback from stakeholders and remains open to measures that could help increase participation in the new system. "Now, we need to increase participation. The closing auction mechanism, introduced by stock exchanges last week, consists of a dedicated 20-minute session during which buy and sell orders are collected to determine a stock's closing price.