Investors don't need to wait for Berkshire Hathaway's Form 13F filing to get an idea of what the Oracle of Omaha has been up to.Wall Street is a stomping ground for long-term wealth creation. However, no money manager has consistently generated outsized investment returns quite like Berkshire Hathaway (BRK.A -0.97%) (BRK.B -1.40%) CEO Warren Buffett.As of the closing bell on Aug. 1, the appropriately nicknamed "Oracle of Omaha" had overseen a nearly 5,750,000% cumulative increase in his company's Class A sh ...