After closing his fund in 2000, Robertson kept his hand in the hedge fund Business by supporting and financing upcoming hedge fund managers (38 in total as of September 2009), in return for a stake in their fund management companies. Apart from those, many of the analysts and managers Robertson employed and mentored at Tiger Management, including Chris Shumway, Lee Ainslie and Ole Andreas Halvorsen went out on their own and are now running some of the best-known hedge fund firms, called "Tiger Cubs". These include funds such as Viking Global Investors, Tiger Legatus, Blue Ridge Capital, JAT Capital Management, Tiger Global, Maverick Capital, Coatue Management, Nehal Chopra's Tiger Ratan Capital Fund NA among others.