<prompt> Human: Currently, Vanguard handle all my fund investments. I know I should probably branch out to other firms like Fidelity, but Vanguards platform is just so simple, hassle-free, and straightforward to use. Is it a big risk having all my investments handled by one firm? What do I do if they go bust?  <response>: Vanguard is unusual in that its wholly owned by its constituent funds. There is virtually no way for it to go out of business. 