QuinStreet shares surge 18.17% premarket after reporting record $288M revenue, strong Auto Insurance growth, and HomeBuddy acquisition-driven margin expansion.

QuinStreet surged 18.17% in premarket trading following its Q2 fiscal 2026 earnings report, which highlighted record revenue of $288 million, 2% year-over-year growth, and strong Auto Insurance performance. The company exceeded both revenue and adjusted EBITDA expectations, with $21.6 million in operating cash flow and a $107 million cash balance. CEO Doug Valenti emphasized progress in AI integration, margin expansion, and the HomeBuddy acquisition, which expanded its Home Services footprint. The firm raised full-year revenue guidance to $1.25–$1.3 billion and adjusted EBITDA to $110–$115 million, citing continued growth in core markets and accretive acquisitions. These results, coupled with robust cash flow and strategic optimism, drove the premarket rally.