Otter Tail Corporation (OTTR) stock is soaring 5.25% in pre-market trading on Tuesday, following the release of its second-quarter earnings report that exceeded analyst expectations. The company also raised its full-year 2025 earnings guidance, further boosting investor confidence.

The electric utility and manufacturing company reported Q2 earnings of $1.85 per diluted share, surpassing the FactSet analyst consensus of $1.72. While this represents a decrease from $2.07 per share in the same quarter last year, the better-than-expected results have clearly impressed investors. Operating revenue for the quarter came in at $333 million, also beating analyst projections of $325.8 million, despite a slight year-over-year decline.

Adding to the positive sentiment, Otter Tail raised its 2025 earnings guidance to a range of $6.06 to $6.46 per diluted share, up from the previous forecast of $5.68 to $6.08. This updated outlook exceeds the current FactSet analyst consensus of $6.14 per share, suggesting potential upside for the company's performance throughout the year. The combination of strong quarterly results and improved forward guidance appears to be driving the significant pre-market stock price increase.