Innospec Inc.’s (IOSP) shares have gained 18.9% in the past year. The company also outperformed the industry’s fall of 13.5%.Image Source: Zacks Investment ResearchLet’s take a look at the factors driving the stock’s price appreciation.Strategic Expansion and QGP Acquisition Fuel OptimismInnospec, carrying a Zacks Rank #3 (Hold), is capitalizing on its robust Performance Chemicals segment and strategic growth initiatives. The company is dedicated to advancing technology development and enhancing margins to ...