04:00 PM EDT, 06/08/2026 (MT Newswires) -- Energy stocks were higher late Monday afternoon, with the NYSE Energy Sector Index increasing 0.9% and the State Street Energy Select Sector SPDR ETF (XLE) adding 1.1%.

The Philadelphia Oil Service Sector Index was climbing 3.8%, and the Dow Jones US Utilities Index fell 1.7%.

Front-month West Texas Intermediate crude oil rose 0.6% to $91.06 a barrel, and the global benchmark Brent crude contract advanced 1.2% to $94.17 a barrel. Henry Hub natural gas futures fell 3% to $3.13 per 1 million BTU.

In corporate news, Oklo ( OKLO ) shares gained 1.4% after the company said it has acquired Armec, a manufacturing and engineering firm, to expand its capabilities in reactor and fuel manufacturing programs.

Eni (E) and Petronas said they have launched a 50/50 joint venture called Searah that will combine businesses across Indonesia and Malaysia. Eni shares rose 1%.

Alliance Resource Partners ( ARLP ) shares added 0.4% after the company said Monday it has agreed to buy certain general partner and limited partner interests in AllDale Minerals III and AllDale Minerals IV for about $206.2 million.