Australia's GPT Group slides to over one-month low on Perron deal

** Shares of retail assets operator GPT Group GPT fall as much as 0.9% to A$4.44, their lowest since Nov 7

** Co set to buy a 50% stake in two retail assets from Perron Group for A$482 mln ($306.94 mln)

** Assets to be acquired are two shopping malls in Australia's Perth, Cockburn Gateway and Belmont Forum with a combined Moving Annual Turnover of more than A$1 billion

** Stock has fallen 3.5% this year, as of last close

($1 = 1.5704 Australian dollars)