Definition of mosquito for English Language Learners. : a small flying insect that bites the skin of people and animals and sucks their blood.
What it is: Small-cap stock refers to a company with a market capitalization (calculated by taking a firm's current share price and multiplying that figure by the total number of shares outstanding) near the low end of the publicly traded spectrum.
Small-cap funds versus large-cap funds. When choosing U.S. stock mutual funds, one big decision for investors is whether to go for large-capitalization or small-capitalization funds. âCapitalizationâ refers to the size of a company, calculated by multiplying its current stock price by the number of shares outstanding.