13F filings: what major investors buy and sell
Every quarter, large institutional investors must disclose their US stock positions to the SEC. WeekTraders analyses these 13F filings for more than 25 well-known investors – from Berkshire Hathaway to Pershing Square and Bridgewater – and shows which stocks were newly bought, increased, reduced or sold out.
Tracked investors
| Investor | Reporting date | Portfolio value | Positions |
|---|---|---|---|
| Citadel Advisors · Ken Griffin | Q2/2026 | 875.1 bn $ | 13575 |
| Berkshire Hathaway · Warren Buffett | Q2/2026 | 299.3 bn $ | 29 |
| Point72 Asset Management · Steven Cohen | Q2/2026 | 90.68 bn $ | 3923 |
| Renaissance Technologies · Jim Simons (gegr.) | Q2/2026 | 72.62 bn $ | 3140 |
| Coatue Management · Philippe Laffont | Q2/2026 | 48.63 bn $ | 66 |
| Viking Global Investors · Andreas Halvorsen | Q2/2026 | 35.08 bn $ | 90 |
| Gates Foundation Trust · Bill & Melinda Gates Foundation | Q2/2026 | 34.42 bn $ | 24 |
| Bridgewater Associates · Ray Dalio | Q2/2026 | 24.38 bn $ | 997 |
🔒 and 19 more – In WeekTraders you see every position of each investor with the change from the previous quarter, can filter by type and new buys, search by stock and see our weekly trend for every stock. Get the Weekly Market Brief free →
Where most of the tracked investors' money is
Stocks held by the most investors
| # | Stock | Investors | Total value |
|---|---|---|---|
| 1 | Alphabet Inc GOOGL | 17 | 50.12 bn $ |
| 2 | Amazon Com Inc AMZN | 14 | 15.35 bn $ |
| 3 | Taiwan Semiconductor Manufac TSM | 14 | 11.63 bn $ |
| 4 | Meta Platforms Inc META | 12 | 8.86 bn $ |
| 5 | Microsoft Corp MSFT | 11 | 6.93 bn $ |
| 6 | Visa Inc V | 10 | 4.22 bn $ |
| 7 | Advanced Micro Devices Inc AMD | 10 | 3.89 bn $ |
| 8 | Sea Ltd SE | 10 | 2.37 bn $ |
| 9 | Nvidia Corporation NVDA | 9 | 8.89 bn $ |
| 10 | Broadcom Inc AVGO | 9 | 5.45 bn $ |
🔒 In WeekTraders you see every position of each investor with the change from the previous quarter, can filter by type and new buys, search by stock and see our weekly trend for every stock. Get the Weekly Market Brief free →
How to use 13F filings sensibly
What matters is less what an investor owns than what changes: new positions and significant increases show where an investor sees opportunities; complete sales show where they have exited. It becomes particularly meaningful when several investors independently buy into the same stock.
With WeekTraders you combine this information with the stock's weekly trend and the market traffic light of the overall market – so you can see whether a stock that major investors are buying is also in an uptrend on the chart.
Frequently asked questions
What is a 13F filing?
A 13F filing is a mandatory report to the US Securities and Exchange Commission (SEC). Institutional investors managing more than 100 million US dollars in US securities must disclose their stock positions in it every quarter.
How up to date is 13F data?
The filing must be submitted no later than 45 days after quarter end. It shows the holdings as of the reporting date – the investors may already have bought or sold since.
Which positions are missing from a 13F filing?
Only long positions in US-listed securities are reported. Short positions, most non-US stocks, bonds and cash are not included.
Should I copy the purchases of major investors?
13F data is additional information, not a recommendation. The investors follow their own strategies, and the filing is already weeks old when published. WeekTraders does not provide investment advice.