13F Filing 13F
A quarterly US filing where large investment managers must disclose the public equity holdings they manage.
What it is
A 13F is a report that institutional investment managers overseeing at least $100 million in qualifying US securities must file with the SEC each calendar quarter. It lists the manager's long positions in publicly traded US-listed stocks, options, and convertible securities as of the quarter's end. It is the primary public window into what hedge funds, mutual funds, and other large managers own.
Why it matters
13F filings let investors track 'smart money', the positions of well-known funds and managers, and spot new buys, exits, and concentration. The big pitfalls are timeliness and completeness: managers have up to 45 days after quarter-end to file, so the data can be over six weeks old, and 13Fs exclude short positions, cash, and most non-US holdings. Treat it as a delayed snapshot, not a live trade feed.
How it's calculated
It is a regulatory disclosure document, not a computed metric; it aggregates each manager's reportable US equity positions as of the last day of the quarter.
How Quintarthai uses it
13F institutional flow is incorporated into Quinn's smart-money analysis, with figures tied to click-to-source provenance receipts; view a company's holders on its deep-analysis page.