Definition of to underperform in English English dictionary
To underachieve, to not reach standards or expectations, especially with respect to a financial investment
Even outside the Anglo-Saxon world, underperforming public companies have become vulnerable to hostile takeover.
{f} perform at a lower level or speed than was expected; (about a security) appreciate at a rate lower than the market average (Finance)
When a security is expected to, or does appreciate at a slower rate than the overall market
When a security is expected to appreciate at a slower rate than the overall market
When a security is expected to, or does, appreciate at a slower rate than the overall market rate of performance
perform less well or with less success than expected; "John consistently underachieves, although he is very able"; "My stocks underperformed last year"