Venture capital (VC) is a type of private equity, a form of financing that is provided by firms or funds to small, early-stage, emerging firms that are deemed to have high growth potential, or which have demonstrated high growth (in terms of number of employees, annual revenue, or both). Venture capital firms or funds invest in these early-stage companies in exchange for equity–an ownership stake–in the companies they invest in. Venture capitalists take on the risk of financing risky start-ups in the hopes that some of the firms they support will become successful. The start-ups are usually based on an innovative technology or business model and they are usually from the high technology industries, such as Information technology (IT), social media or biotechnology. The typical venture capital investment occurs after an initial "seed funding" round. The first round of institutional venture capital to fund growth is called the Series A round. Venture capitalists provide this financing in the interest of generating a return through an eventual "exit" event, such as the company selling shares to the public for the first time in an Initial public offering (IPO) or doing a merger and acquisition (also known as a "trade sale") of the company.