Is QuinStreet, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for QuinStreet, Inc. has moved from expensive to attractive, indicating a shift towards a more favorable assessment. The company appears to be undervalued, particularly when considering its P/E ratio of 378, which is significantly higher than peers like Omnicom Group, Inc. with a P/E of 14.28 and Interpublic Group of Cos., Inc. at 12.38. Additionally, QuinStreet's EV to EBITDA stands at 30.49, while its EV to Sales ratio is 0.81, suggesting a discrepancy in valuation relative to its earnings and sales.
In terms of returns, QuinStreet has underperformed compared to the S&P 500, with a year-to-date return of -38.45% versus the index's 13.30%. This trend continues over one year, with QuinStreet down 26.16% compared to the S&P 500's 14.08% gain, reinforcing the notion that the stock may be undervalued despite its high valuation ratios.