A look at the weighted underlying holdings of the Global X Junior MLP ETF (MLPJ) shows an impressive 25.7% 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 Dorchester Minerals LP (DMLP), which makes up 2.01% of the Global X Junior MLP ETF (MLPJ), has seen 2 directors and officers purchase shares in the past six months, according to the recent Form 4 data.