underperform

under- +‎ perform.

underperform (third-person singular simple present underperforms, present participle underperforming, simple past and past participle underperformed)

1. To underachieve, to not reach standards or expectations, especially with respect to a financial investment.
   • 2002, Robert M. Grant, Contemporary Strategy Analysis: Concepts, Techniques, Applications, Page 40:

     Even outside the Anglo-Saxon world, underperforming public companies have become vulnerable to hostile takeover.

• overperform

• underperformance
• underperformer