KB Home's (NYSE:KBH) short percent of float has risen 3.57% since last its last report. The company recently reported that it has 5.18 million shares sold short, which is 6.09% of all regular shares that are available for trading. Based on its trading volume, it would take traders 4.3 days to cover their short positions on average. Why Short Interest Matters Short interest is the number of shares that have been sold short but have not yet been...