Tallgrass Energy Partners LP now holds a 75% stake in Rockies Express Pipeline LLC after completing a $440 million purchase to buy a 25% stake from Sempra U.S. Gas & Power (see Daily GPI, March 30). Tallgrass, which operates the 1,712-mile natural gas pipeline, bought Kinder Morgan Inc.'s stake in 2012 (see Daily GPI, Nov. 14, 2012). A ConocoPhillips unit has the remaining 25% interest. NGI’s Rockies Express Zone 3 Tracker is updated daily.