What Is a 13F Filing? How to Follow Smart Money (2026 Guide)

Every quarter, the biggest money managers in the world are legally required to show their hand — and it's public. That disclosure is the 13F filing, and learning to read it is one of the simplest ways to see what "smart money" is buying.

What is a 13F?

A Form 13F is a quarterly report that any institutional investment manager with over $100 million in qualifying US assets must file with the SEC. It lists their long equity positions — the stocks and ETFs they hold — as of the end of the quarter.

What it shows (and what it doesn't)

• Shows: long stock and ETF holdings, share counts, and market value.
• Doesn't show: short positions, cash, bonds, or foreign-listed holdings.
• The catch — the lag: filings are due 45 days after quarter-end, so the data is up to ~4.5 months old by the time you read it.

Why traders watch them

Even with the lag, 13Fs are valuable because they reveal:

• New positions — when a respected fund opens a brand-new stake, it signals fresh conviction.
• Consensus buying — when many institutions add the same name in the same quarter, that's a crowd of smart money agreeing.
• Rotation — which sectors big money is moving into and out of.

How to use 13F data well

Don't blindly copy a single fund. Instead:

1. Look for overlap — tickers that multiple strong institutions bought.
2. Cross-check against other signals — recent price structure, options flow, and even congressional trading disclosures.
3. Focus on changes, not just holdings — a fund adding 300% to a position says more than one that's held it for years.

Combining 13F with congressional trades

US members of Congress also disclose their stock trades. When a stock shows up in both recent congressional buying and new institutional 13F positions, you have two independent "smart money" sources pointing the same way — a much stronger signal than either alone.

This article is educational analysis, not financial advice. Trading involves risk of loss. Do your own research.