Shares of Tetra Tech (TTEK) surged 10.82% in pre-market trading on Thursday, following the company's strong fourth-quarter performance and a series of positive analyst actions. The environmental and engineering consulting services firm has attracted investor attention due to its robust growth prospects and favorable market positioning.

William Blair analyst Tim Mulrooney reiterated a Buy rating on Tetra Tech, citing the company's impressive Q4 results. The analyst's bullish stance underscores confidence in Tetra Tech's ability to capitalize on growing demand for its services. Adding to the positive sentiment, Northcoast Research upgraded Tetra Tech from Neutral to Buy, setting a price target of $38. This upgrade reflects the firm's improved outlook on the company's future performance and market potential.

While the overall analyst consensus remains positive, with an average rating of overweight and a mean price target of $41.33 according to FactSet, it's worth noting that not all analysts share the same level of enthusiasm. Baird maintained its Neutral rating on Tetra Tech, suggesting a more cautious stance. Despite this, the pre-market rally indicates that investors are largely focusing on the positive aspects of Tetra Tech's recent performance and the bullish analyst views, driving the stock to significant gains ahead of the regular trading session.