Gravity’s 23-year-old founder left Vancouver for San Francisco. One day, he hopes to come back bigger

There’s an odd transition period when you move away from home where it’s sometimes not clear where “home” really is. Zach Oldham is still in that “weird in-between” phase: he was born in London, England, raised as a teenager in Vancouver, and now runs his own AI adtech company, Gravity, in San Francisco. Because of that, the 23-year-old has a tough time answering where he considers “home” to be.