According to Forbes' latest list of 100 Richest People In Tech, 15 techies are under the age of 40. Notably, 25-year-old Evan Spiegel, the founder and CEO of Snapchat, is the youngest of them all with a net worth of $2.1 billion. Furthermore, 86-year-old Intel co-founder Gordon Moore is the oldest on the list, which is topped by Bill Gates.