It helps underscore why Apollo has been so good for its customers and its shareholders. Speaking of shareholders, Marc Spilker, the president of APO and a member of its Executive Committee owns 2,757,452 shares of APO.

Insiders and beneficial owners control about 5% of the outstanding shares, and the top institutional owner of shares is FMR LLC (a.k.a. Fidelity Investments), which owns 5.5% of the outstanding shares of APO as of Dec. 31, 2012.

Chief Legal Officer and Chief Compliance Officer John Suydam sold 100,000 shares of his holding April 8-9 at an average price of $26.50. He reportedly still owns 981,039 shares as of April 9. In total, Spilker and Suydam own over 3.7 million shares.

Multiply 3.7 million by the closing price on May 2 of $26.25 and you have to be impressed by these insiders commitment to the future of this firm.

As of the last quarter of 2012, Apollo's investment team has been knocking the ball out of the park. APO's trailing 12-month return on equity came in at 73%.

If that isn't breathtaking enough, its year-over-year quarterly revenue growth was 81% and its quarterly earnings per share showed a staggering 1,469% year-over-year growth. Just take a look at this one-year chart to get the overview of this amazingly successful firm. APO EPS Diluted TTM Chart APO EPS Diluted TTM data by YCharts

The share price moved in lockstep with revenue per share and EPS magnificence. Part of its ongoing stellar success has to do with its "strategic alliances," such as the one announced Thursday with Apex Energy, a privately held oil and gas company.

Both companies said they formed a strategic partnership to invest in oil and gas properties in the Appalachian Basin, with a primary focus on the Marcellus Shale. Greg Beard, Global Head of Natural Resources and Senior Partner at Apollo, said, "We are excited to partner with a management team of Apex's caliber, and believe this investment will further our strategy of backing talented, experienced teams to acquire and derive value from physical assets."

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