13D vs 13G: what is the difference?
Both Schedule 13D and Schedule 13G are filed by investors who cross 5% ownership of a company. A 13D is for active investors who may seek to influence the company; a 13G is the shorter form for passive holders.
The 5% line
When an investor acquires more than 5% of a company’s voting equity, they must report it to the SEC. Which form they use depends on their intent.
13D is active, 13G is passive
A Schedule 13D is filed by investors who may want to influence control of the company, such as activists, and it asks for more detail including their purpose. A Schedule 13G is a shorter filing for passive investors and certain qualified institutions that do not intend to influence control.
How QuantConomy surfaces it
QuantConomy reads 13D and 13G filings, links the stake to the company, and can raise an OWNERSHIP signal, with 13D activity often weighted more heavily because of its activist intent.
Questions
Which is more market-moving, 13D or 13G?
A 13D often gets more attention because it can signal an activist building a position to push for change. A 13G usually reflects a passive holding.
How quickly must they be filed?
The SEC sets and has recently shortened these deadlines. Both are filed within a few business days of crossing the threshold or meeting the relevant conditions.
See it in the product
QuantConomy turns this into ranked, source-linked signals for your dashboard and your AI agents. Early access is opening in stages.
Last updated June 3, 2026