Vistra Energy Corp. (VST) shares surged 5.09% in pre-market trading on Thursday, riding high on the company's impressive fourth quarter and full-year 2024 financial results. The integrated retail electricity and power generation company reported a record net income of $2.8 billion for 2024, driven by strong operational performance, the acquisition of Energy Harbor, and an increase in estimated nuclear production tax credits.

Vistra's adjusted EBITDA for the full year 2024 stood at a remarkable $5.7 billion, surpassing the high end of the company's original guidance range by $856 million. The company reaffirmed its robust 2025 guidance ranges, with anticipated adjusted EBITDA between $5.5 billion and $6.1 billion, and adjusted free cash flow before growth projected to range from $3.0 billion to $3.6 billion.

Moreover, Vistra announced the completion of a $4.9 billion share repurchase program, representing a 30% reduction in outstanding shares since November 2021. The company plans to complete the remaining $1.9 billion share buyback authorization by the end of 2026, further enhancing shareholder value.

In addition to its strong financial performance, Vistra is actively expanding its portfolio of zero-carbon resources, including the recent acquisition of the entire 15% minority interest in its Vistra Vision subsidiary. This strategic move solidifies Vistra's position as the sole owner of its highly valuable, carbon-free assets and retail business.

The pre-market rally in Vistra's stock price can be attributed to the company's exceptional financial results, shareholder-friendly initiatives, and the growing optimism surrounding the nuclear energy industry's potential to meet the surging demand for reliable and clean power, particularly from the rapidly expanding AI data center market.