Crowdfunded investing, also called investment crowdfunding or equity crowdfunding, lets a company raise money from a large number of ordinary investors over the internet by selling them securities: shares of stock, a revenue share, or a debt interest. In the United States it is made possible mainly by SEC Regulation Crowdfunding, adopted under the JOBS Act, along with the related Regulation A framework for somewhat larger offerings. The defining feature is that these rules let people who are not accredited investors, that is, ordinary savers who do not meet the SEC's wealth or income thresholds, invest in private companies, subject to annual limits.
Two comparisons keep this page in its lane. It is not donation-based crowdfunding: on a site where people chip in for a cause or a creative project, contributors receive no ownership and expect no financial return, and the money is generally a gift. Here, the investor receives a security and is buying a chance at profit and taking a real risk of loss. And it is not the same as angel investing, where wealthy accredited individuals back start-ups directly, often with larger checks and negotiated terms. Crowdfunded investing is the path that opens early-stage private investing to the general public, within guardrails, and the guardrails exist because the risks are severe.