Sebi has given a message to investors that markets are not being manipulated by FIIs," said Nexgen Capital Equity head Jagannadham Thunuguntla commenting on the move. "The measure will bring in more transparency in the securities lending and borrowing market and will reduce nervousness of the investors. It will send positive signal to the bourses that Foreign Institutional Investors Sebi is observing the markets' movement closely," he said.