A look at the weighted underlying holdings of the Fundamental Pure Small Value Portfolio (PXSV) shows an impressive 13.6% 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 Southwest Gas Corporation (SWX), which makes up 0.38% of the Fundamental Pure Small Value Portfolio (PXSV), has seen 2 directors and officers purchase shares in the past six months, according to the recent Form 4 data.