Brian Bradley, a calendar year taxpayer, purchased 1,000 shares of Newton Corp. On October 23,2011, for $15,000. He sold these shares on January,20,2012, for $7,000. On each of the four days from January 24 through January 27, 2012, Brian purchased 500 shares of substantially identical stock for $3,000. What is the tax effect fir Brian and what will be the basis of each of the four batches of new stock?