Research Problem. Brian Bradley, a calendar year taxpayer, purchased 1,000 shares of Newton Corp. stock on October 23, 2017, for \(\$ 15,000\). He sold these shares on January 12,2018 , for \(\$ 7,000\). On each of the four days from January 15 through January 18,2018 , Brian purchased 500 shares of substantially identical stock for \(\$ 3,000\). What is the tax effect for Brian and what will be the basis of each of the four batches of new stock?