Horizontal drilling and fracking have opened new opportunities for investing in domestic energy, whether for pure-play explorers in developing shales, producers in mature areas, or service companies opening up the monster wells.

Welcome to edition 220 of Insider Weekends. Insider buying increased last week with insiders buying $22.81 million of stock compared to $18.96 million in the week prior. Selling decreased with insiders selling $725.84 million of stock last week compared to $932.22 million in the week prior.

Much larger than Eagle Ford and once thought to have reached peak production, new technology has brought us full circle back to the Permian Basin in Texas and New Mexico, where the recent shift to horizontal well drilling has rendered this play the unexpected ground zero.

June E-mini S&Ps (ESM14 +0.08%) this morning are down -0.04% as prices consolidate gains following Wednesday's rally to a record high.