AUD/USD opens 0.23% higher at 0.7765 after trading to 0.7784

Firm commodities and broad USD weakness underpinning AUD/USD

Talk of sellers ahead of 0.7800 limiting upside for now

Support is at 10-day MA @ 0.7734 and close below shifts pressure to downside

Resistance is at 0.7805/20 where daily highs were made since Jan 6

Aus retail sales for December today with market expecting -2.5% M/M

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