13F filing
Plain definition. A 13F filing is a report that large institutional investment managers must file with the U.S. Securities and Exchange Commission listing the securities they hold.
Technical definition. Under Section 13(f) of the Securities Exchange Act of 1934 and rule 13f-1, every manager exercising investment discretion over accounts holding Section 13(f) securities worth at least $100,000,000 must file Form 13F within 45 days after the end of the calendar year and each of the first three calendar quarters of the following year. The report is filed electronically on the Commission’s EDGAR system. Reportable holdings are those on the official 13F List, which the Commission updates quarterly.
On this site
On this site, 13F filing comes up in Who owns XRP ETFs, and what do 13F filings really show?, What does BlackRock have to do with XRP? and Is institutional capital actually flowing into XRP in 2026?.
Source
OMB APPROVAL (sec.gov), read October 1, 2026.