Core Insights - Delek US Holdings, Inc. (NYSE:DK) experienced a significant share price decline of 10.92% from September 5 to September 12, 2025, ranking it among the energy stocks that lost the most during that week [1] Company Overview - Delek US Holdings is a diversified downstream energy company involved in petroleum refining, asphalt, renewable fuels, and logistics [2] Recent Performance and Market Reactions - The stock had previously rallied after Wolfe Research upgraded it from 'Peer Perform' to 'Outperform' with a price target of $40, benefiting from small refining exemptions granted by the Trump administration [3] - The recent downturn in share price may be attributed to profit-taking by investors following the earlier rally [3] Insider Activity - Investor confidence was impacted by the sale of 7,135 shares by Robert G. Wright, Senior Vice President and Deputy CFO, with a total transaction value of $208,627 [4]