Australia's AdAlta hits 2-month low on discounted placement
** Shares of AdAlta 1AD.AX fall as much as 20% to A$0.004, biggest intraday pct loss since March 5 ** Biotech firm says it would raise A$2.5 million ($1.80 million) through placement ** Offer price of A$0.004/share marks 20% discount to firm's last close ** Says placement funds to be used to advance development of its lung cancer treatment therapy ** Stock up 33.3% YTD ($1 = 1.3877 Australian dollars) (Reporting by Aamir Sheik Khalid in Bengaluru) ((Aamir.SheikKhalid@thomsonreuters.com))