The Treasury Bond market is slightly negative today but mortgage-backed securities have remained flat.  This week is a very light week in terms of economic data.  Trading is expected to be most influenced by investor appetite for the US Treasury auctions.  The Treasury Dept will be auctioning $40 billion in 2 year notes tomorrow, $$21 billion of 10 year notes on Wednesday and $13 billion of 30 year bonds on Thursday.  The key items on the economic calendar will be the Initial Jobless Claims report for the week ended 3/6 on Thursday (analysts are expecting claims to be down 9,000) and February's Retail Sales on Friday (analysts are expecting the headline # to be up .2% and, excluding the auto component to be flat).