26. Marc Lore

Founder, CEO, Jet.com

Formerly the CEO of Quidsi — the e-commerce website behind Diapers.com — Marc Lore has talked about raising $600 million for his mysterious Amazon-killing e-commerce startup Jet before it has even launched.

In September, Lore raised $25 million in new funding to round out an $80 million Series A for Jet. Lore has promised that Jet will be a "new kind of e-commerce experience, uniquely grounded in transparency and customer empowerment."