AUD/USD is trading at 0.7657, up 0.0050. The pair is trading choppy and at the highs of the session. Market chatter about money flows and Australian economic data due out this evening has kept buyers and sellers active. The National Australia Bank ( NAB) Australian Business Confidence survey is due out at 9:30 p.m. ET. The Westpac-Melbourne Institute Consumer Sentiment is set for release Tuesday at 8:30 p.m. ET.