A look at the weighted underlying holdings of the Vanguard Russell 2000 Value ETF (VTWV) shows an impressive 17.8% of holdings on a weighted basis have experienced insider buying within the past six months. Start slideshow:10 ETFs With Stocks That Insiders Are Buying » Cannae Holdings Inc (CNNE), which makes up 0.28% of the Vanguard Russell 2000 Value ETF (VTWV), has seen 7 directors and officers purchase shares in the past six months, according to the recent Form 4 data.