13G filing (passive >5% ownership)

A 13G filing is a public notice that someone has bought more than 5% of a company's stock and plans to hold it passively—meaning they're investing for the long term without trying to control the company. You'll see these filings pop up when large investors, funds, or institutions cross that 5% threshold; it matters because it signals serious money believes in the stock, though it doesn't mean change is coming. For example, if a major pension fund quietly accumulated 6% of TechCorp shares just to own a solid investment, they'd file a 13G to disclose it. Think of it as a transparency rule: when someone gets that much ownership, the public deserves to know.