Think of this as a list of companies that investors or acquirers are/were willing to pay $1b+ for. If you want companies that have justified their valuation ba

Think of this as a list of companies that investors or acquirers are/were willing to pay $1b+ for. If you want companies that have justified their valuation based on past profits, you will need to go to older dates. eg 1998: OpenTable, Google, Rackspace, PayPal.