13F vs 13D/G
These filings can all mention large positions, but they answer different regulatory questions.
13F: portfolio reporting
13F is a periodic report of certain securities held by qualifying institutional investment managers. It is primarily a portfolio-reporting disclosure.
13D and 13G: beneficial ownership
13D and 13G filings concern beneficial ownership and substantial positions in a reporting issuer. Their rules, timing and purposes differ from 13F portfolio reporting.
Why the distinction matters
A large 13F position should not automatically be described as a controlling or activist stake. Conversely, a 13D/G disclosure should not be treated as another version of a quarterly portfolio report.
Use both carefully
RealitySeller keeps these workflows separate so a research user can move between institutional portfolio intelligence and beneficial-ownership intelligence without collapsing them into one metric.