Vanguard's One-of-a-Kind Fund Design Is About to Get Some Competition

The one-of-a-kind fund structure that helped turn Vanguard Group into the second-largest ETF manager in the world may be about to get a lot less unique.

A multi-boutique asset manager has this week filed for permission to create ETFs as a share class of its US mutual funds, aiming to replicate a blueprint that Vanguard has used exclusively for more than two decades.

In the simplest terms, that structure ports the famous tax efficiency of an ETF into the mutual fund, largely cleansing the latter of taxable gains. Outside of the industry it has received little attention, but Vanguard has used the design — entirely legally — to slash the capital gains reported by its funds for more than 20 years.

The Jack Bogle-founded firm has held a patent since 2001 that makes it difficult for competitors to replicate it — a protection that expires in May.

With the patent expiry looming, the fund industry has been rife with speculation over which firms might attempt to follow the Vanguard playbook. PGIA, the US-arm of Australian asset manager Perpetual Ltd., looks like one of the first.