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.
Defining Large, Mid and Small-Cap Companies. Companies are considered to be large-, mid- or small-cap based on the market capitalisation of a company, which is its overall value; the greater the value, the larger the cap. Morningstar defines large-cap companies as those that account for the top 70% of the capitalisation of a domestic stock market. Mid-cap stocks represent the next 20% and small-cap stocks make up the remainder. In the UK large caps are generally considered to be those that are listed in the FTSE 100 index. The smallest company within the FTSE 100 is Weir Group with a market cap of Â£3.8 billion.