The following is a post I wrote on Quora.
There are a couple of ways.
- If a US public company, look at its 10-K (annual report). Firms generally discuss their competitors. You can locate the 10-K on a company’s investor site, through sales intelligence vendors, or free Edgar sites.
- If a private company, look at Owler, a free site (See below). This is crowdsourced so may include firms that aren’t true competitors.
- Look at sales intelligence services such as D&B Hoovers or InsideView. Hoover’s competitors are editorially generated and include top three flags (see below)
- Within IT, look at Forrester Wave reports. Another option is technology category searches in PE/VC databases such as DataFox, Crunchbase, Pitchbook, or CB Insights. Keep in mind that companies within the same segment may not be competitors, but partners, customers, etc.
- Many industries have industry specific market research that includes competitors. A few general market research firms also provide competitors (e.g. MarketLine, Euromonitor, Global Data, and Freedonia). Top Competitors are also available in IBISWorld, Vertical IQ, and First Research.
- Zoominfo and a few other vendors identify similar companies based upon proximity in articles. This finds competitors, but also customers and partners so should be carefully reviewed.
- For new technologies or industries, D&B Hoovers offers Conceptual Search which identify companies associated with key phrases (e.g. Marcellus Shale, Obamacare). This is more of an associated companies list and will identify firms in a topical ecosystem. For example, “Harry Potter” identifies studios, publishers, toy makers, theme parks, and thematic tours. (See example below of conceptual search on Marcellus Shale). Conceptual Search lists may be refined by standard prospecting filters such as industry, geography, and size.
- If none of these work, use peer list searches (industry code lists) or keyword searches in sales intelligence vendors.