(Bloomberg) -- Nasdaq Inc. is hiring to get ahead of a potential wave of listings after US regulators signaled they’ll allow asset managers to offer ETFs as share classes of existing mutual funds.Nasdaq is one of the many players in the $13 trillion US ETF market preparing for what industry watchers say is a watershed moment in asset management. The Securities and Exchange Commission indicated in late September that it would allow Dimensional Fund Advisors to create ETF share classes of a mutual fund, with ...