Why Should You Care About SEC Filings?
You could read just the press releases from a company or its blog posts about what it is working on, but they are all marketing materials. Alternatively, you could rely on the numbers that they publish and even analyze them to glean useful information. Ultimately though to truly understand the prospects of a company you have to dig into the footnotes and disclosures of their mandated filings in order to get to the heart of why a company is doing well, or not.