In one fell swoop, Vanguard enters both the actively-managed and factor ETF universes tomorrow with the launch of six new funds.The new offerings include...Vanguard U.S. Liquidity Factor ETFVanguard U.S. Minimum Volatility ETFVanguard U.S. Momentum Factor ETFVanguard U.S. Quality Factor ETFVanguard U.S. Value Factor ETFVanguard U.S. Multifactor ETFThe single factor ETFs will charge 0.13%, while the Multifactor ETF will charge 0.18%. That will make these active funds cheaper than most index funds. The Liquidity Factor ETF will be unusual in that low liquidity is mostly ignored as a factor investment strategy.