QuinStreet Inc. (NASDAQ: QNST) saw its shares surge 5.28% in pre-market trading on Thursday, following the company's impressive fiscal second-quarter results and raised full-year guidance. The online marketing services firm reported record revenue and significantly exceeded analyst expectations, driven by robust demand across its core verticals.

For the quarter ended December 31, 2024, QuinStreet reported adjusted earnings of $0.20 per share, surpassing the consensus estimate of $0.19 per share. Revenue soared 130% year-over-year to $282.6 million, beating analysts' projections of $239.72 million.

Fueling the company's remarkable performance was the unprecedented growth in its auto insurance vertical, which saw revenue skyrocket 615% year-over-year. Additionally, QuinStreet's non-insurance verticals posted a solid 15% increase in revenue, contributing to the overall strength.

Reflecting its robust momentum, QuinStreet raised its full-year 2025 revenue guidance to a range of $1.07 billion to $1.11 billion, up from its previous forecast of $975 million to $1.03 billion. The company also lifted its adjusted EBITDA guidance for the fiscal year.

According to Doug Valenti, CEO of QuinStreet, the company's strong results were driven by the "unprecedented ramp and broadening of Auto Insurance client demand and by double-digit growth in our other client verticals." Valenti expressed confidence in the continued strength of demand, particularly in the auto insurance segment, and anticipated further growth in the company's non-insurance verticals.