Shares of Amazon.com Inc. (NASDAQ: AMZN) soared 25 percent on Wednesday, a day after the web retailer reported its second-quarter profit more than tripled on strong sales of books, music and electronics. Amazon’s heavy spendings on the reorganization and optimization of their company and sales structure, which had caused Amazon’s shares to take a dive last year, continue to pay off now. At the time of this post, the Amazon.com stock is at $86.34, which results in a $35.4 billion market capitalization.