Well, those ultra-low expense ratios I reported for Vanguard’s new Wellington-run ETFs—0.13% to 0.17%—were, unfortunately, too good to be true. Vanguard just told me last night’s prospectuses were incorrect. Updated versions are coming. The actual expense ratios will fall between 0.30% and 0.40%, as Vanguard originally guided.
Here's how the "real" ETF expenses stack up against their mutual fund counterparts.