Underweight
An situation where a portfolio does not hold a sufficient amount of securities to satisfy the accepted benchmark of the portfolio's asset allocation strategy.
Investopedia Commentary
For example, if a portfolio normally holds 40% stock and currently holds 30%, the position in equities would be considered underweight.
Related Links
Maintaining Your Mutual Fund Equilibrium
See also: Benchmark, Overweight, Portfolio, Portfolio Management
Also spelled: under-weight, under weight
underweight un·der·weight (ŭn'dər-wāt')
adj.
Weighing less than is normal, healthy, or required. n.
Insufficiency of weight.