Centro Properties (CNP) was the week 5 of 2008 winner, topping both ASX100 and ASX200 indices in terms of percentage gain. Centro Properties gained 18 cents or 37.5 percent closing at 66 cents. Meanwhile Centro Retail (CER) came second in the ASX200 indices gaining 36.765 percent or 13 cents, closing at 47 cents. Meanwhile, Rio Tinto took second place in ASX100 gaining 17.37 percent or $18.84 closing at $127.31. Other big percentage winners were Perilya (32 percent), Muchison Metals (27.8 percent), Straits Resources (27.3 percent), Babcock and Brown (26.471 percent), Centennial Coal (25.424 percent), Riversdale (25 percent), Queensland Gas (21.2 percent) and Lynas Corp (20.2 percent).