Kenneth Moelis, Navid Mahmoodzadegan, and Jeff Raich, all veteran investment bankers, launched Moelis & Company in 2007. The firm provides investment banking and financial advisory services to its clients on a number of topics, including mergers and acquisitions, recapitalizations, restructurings, and other corporate finance matters. It works primarily with large corporations (past clients include Yahoo and Anheuser Busch) and government organizations. While such high-profile clients have helped it make a name for itself, one highly publicized, ill-advised acquisition could harm Moelis & Company significantly in the future. To stand apart from its competitors, Moelis & Company plans to continue to increase its global reach, by making substantial investments its offices located across the U.S., Europe, the Middle East, Asia, and Australia. Note: employee count as of Dec. 31, 2015

FireEye, founded by Ashar Aziz, is one of the many publicly traded cybersecurity companies out to prove that its software is the best at keeping company data safe. FireEye offers a variety of products that businesses can use to help keep hackers at bay, including analytical tools that identify which parts of a company's laptop, mobile device, and email networks are most at risk. While FireEye does have some notable customers, such as the U.S. Department of Defense and credit card reporting agency Equifax, the cybersecurity market is crowded--and is getting even more so, as companies such as Intel and IBM acquire other IT companies. To stay ahead of the pack, FireEye is putting millions of dollars into funding its own cybersecurity research teams in several countries, including Germany, India, Ireland, Japan, Singapore, and the U.S. Note: employee count as of Dec. 31, 2015