NEW YORK (Reuters) - When the nine-person startup he co-founded was bought by Facebook for a reported $15 million in January, Cemre Gungor, 27, was inundated with phone calls and emails from wealth advisers. Yet he spurned them all, opting instead to open an account with Betterment, an online financial adviser launched in 2010 that automatically invests in a portfolio of exchange traded funds based mainly on a client's age.
