Amazon boss's parents' $250k investment makes billions

It's more than 20 years since Mike and Jackie Bezos took a gamble and poured a large part of their retirement fund into their son's idea: an online bookshop.The couple contributed $245,573 (£187,120) to son Jeff's venture in 1995, a year after he started the company.The Bezos parents's holdings have not been public since 1999 but Bloomberg calculates that, depending on how many shares they have kept, they could be worth up to $29.6bn (£22.5bn).