AOFM sells $1b of Treasury notes THE Australian Office of Financial Management has sold $1 billion of Treasury notes that mature on May 24, 2013. The Australian Office of Financial Management (AOFM), which conducts bond auctions on the behalf of the government, on Thursday said the notes were sold for a weighted average yield of 2.9172 per cent The sale attracted bids totalling that totalled $5.595 billion, giving a coverage ratio of 5.60.