A look at the weighted underlying holdings of the Vanguard Financials ETF (VFH) shows an impressive 10.1% 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 Blackrock Incorporated (BLK), which makes up 1.04% of the Vanguard Financials ETF (VFH), has seen 2 directors and officers purchase shares in the past six months, according to the recent Form 4 data.