Australian, NZ stocks buoyed by trade optimism and resource sector <!-- no image --> <div>* Rio Tinto to invest $749 mln in Greater Tom Price operations<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=6Un2KkqP-X4:6qux2w5LIyM:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=6Un2KkqP-X4:6qux2w5LIyM:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=6Un2KkqP-X4:6qux2w5LIyM:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=6Un2KkqP-X4:6qux2w5LIyM:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=6Un2KkqP-X4:6qux2w5LIyM:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/6Un2KkqP-X4" height="1" width="1" alt=""></div> Posted by Reuters