12,000 puts traded on DR Horton (DHI, news, chart, volatility) today. Shares of the homebuilder are back under pressure, down 67 cents to $7.21 and Feb 10 puts are leading the order flow. Top trades of the day include 4,330 and 2,000 contracts traded at the offer for $3.10 and $3.20, respectively. Existing open interest is 2,303, suggesting opening put buys ahead of presentation at the CS Homnebuilding Conference Wednesady, earnings Feb. 3.