Noun
The act of undervaluing; a rate or value not equal to the real worth.
Source: Webster's dictionaryEnvy of the male role can come as much from an undervaluation of the role of wife and mother as from an overvaluation of the public aspects of achievement that have been reserved for men. Margaret Mead
In a few words then, investors using share buyback announcement as a signal of a firm's stock undervaluation should only do so in combination with the recent history of insider trading. Source: Internet
A positive score points to undervaluation, a negative one to overvaluation (positive is good, negative is bad). Source: Internet