** Shares of Australia's Aura Energy AEE.AX fall as much as 16.7% to A$0.210, their biggest intraday drop since October 20
** The uranium explorer said on Monday it received firm commitments to raise A$20 million via placement at an issue price of A$0.205 per share
** Issue price represents a 14.6% discount to last closing price
** Funds to be used for Tiris Uranium Project ('Tiris') development, exploration, resource definition and working capital, among others
** Around 4.6 million shares change hands, nearly 1.2x 30-day average
** AEE stock up 17.1%, YTD
(Reporting by Keshav Singh Chundawat in Bengaluru)
((Keshav.singhchundawat@thomsonreuters.com))