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.
Large cap stocks consist of 80% of the market capitalization and almost every investors trade these category of shares. So more the investors, more will be the chances that price get equilibrium. Mid and small cap stocks have 15% and 5% market share respectively.