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 Stock Funds. Some so-called small-cap funds also invest in stocks of larger companies. One reason is that once a small-cap fund grows beyond a certain size, it begins to run out of companies to invest in, as the universe of small-cap stocks is relatively tiny when compared with the size of the market.Also, the recent bull markets have added to the size of many so-called small firms.ne reason is that once a small-cap fund grows beyond a certain size, it begins to run out of companies to invest in, as the universe of small-cap stocks is relatively tiny when compared with the size of the market. Also, the recent bull markets have added to the size of many so-called small firms.