Almost all of the Oxbridge colleges are fully independent legal entities within the universities, owning their own buildings, employing their own staff, and managing their own endowments. The colleges vary widely in wealth; the richer colleges often provide financial support to the poorer ones. It is entirely possible for some colleges to be in better financial health than the universities of which they are a part. Currently about 2/3 of the £4.3 billion endowment of Cambridge University is in the hands of its colleges, and therefore just 1/3 belongs to the central university.