It doesn't require more information. It can be achieved through throwing more resources at analysing the existing information, hiring people with experience of/expertise in the broader airline industry, regulatory environment, supply chain management, technology and so forth. They're able to do this, because the resources that a large fund manager has far exceed that of a lone individual (money, labour etc.), and because there's simply too much information out there for a lone individual to fully analyse themselves (excepting perhaps, if they do nothing else)