Cheniere Energy Inc. has agreed to acquire its 48.6%-owned subsidiary Cheniere Energy Partners LP Holdings LLC in a stock deal that values Cheniere Partners at $30.93 a share, the companies said Tuesday. Cheniere Partners shareholders will receive 0.4750 Cheniere Energy shares for each share owned. The deal is expected to qualify as a tax-free reorganization for Cheniere Partners shareholders and to close by the end of the third quarter. Houston-based Cheniere Energy is engaged in liquid natural gas-related businesses and owns and operates the Sabine Pass LNG terminal in Louisiana. Cheniere Energy shares were slightly higher premarket, and have gained 20.9% in 2018, while the S&P 500 has gained 3.8%.