> Index funds “are great for investors,” says Elhauge, “but part of the reason they’re great for investors is exactly because of the anti-competitive effects.” Elhauge says the trusts of the late 19th century that gave rise to today’s antitrust laws also involved a form of common shareholding.<p>> She might want Coca-Cola to take big risks to crush Pepsi, and invest capital in new products and markets to do so. An investor who holds both, on the other hand, would prefer that Coke and Pepsi avoid price wars.<p>So the way we can solve this problem is to outlaw shares ownership of competing companies? Seems like a fair solution.