William Blair analyst Adam Klauber recommends buying QuinStreet on today's post-earnings selloff. The company's fiscal Q2 highlighted that QuinStreet is "increasingly the hub for deepening digital penetration in insurance and financial services," Klauber tells investors in a research note. As expected, education and to a lesser extent mortgage should moderately reduce growth for this year, possibly pushing revenue increases to the lower end of the 15% to 20% range, adds the analyst. However, he believes these products should have little impact on future year's growth given their diminished size. Klauber keeps an Outperform rating on QuinStreet.