SEC Data Sources

SEC Filings

Explore the regulatory filings used as the primary source for the reported Berkshire Hathaway holdings shown on this website.

Source-data limitation The website currently uses verified information from Berkshire Hathaway's June 30, 2026 Form 13F-HR and references additional historical filings. The SEC filing itself contains more holdings than are currently loaded into this site's dataset.

Current Filing

The filing currently used for the main portfolio dataset.

Reporting Period
June 30, 2026
Berkshire Hathaway Inc.
Filing Date
August 14, 2026
Form 13F-HR
Form 13F-HR
13F File Number 028-04545
Reported Entries 89
Reported Value $299,253,556,246
Open SEC Filing View Portfolio

Historical Filing References

Earlier filings currently referenced by the website.

Reporting Period Filed Form Status Source
June 30, 2026 August 14, 2026 13F-HR Current dataset SEC filing →
March 31, 2026 May 15, 2026 13F-HR Historical reference SEC filing →
December 31, 2025 February 17, 2026 13F-HR Historical reference SEC filing →

What is Form 13F?

Form 13F is a quarterly report filed with the SEC by certain institutional investment managers. It reports specified securities held at the end of the reporting quarter.

What does reported value mean?

The reported value comes from the filing and should not be interpreted as a real-time market value. Market prices can change after the reporting period.

Is this the entire Berkshire portfolio?

No. A 13F does not represent every asset owned by Berkshire Hathaway. The filing covers securities subject to the reporting requirements.

Why use SEC data?

SEC filings provide the regulatory source documents used to verify the reported holdings displayed by this website.

Can the data be incomplete?

Yes. The SEC notes that filings may not have been reviewed for accuracy or completeness. This website therefore identifies its own verification and coverage limitations.

Does a filing show Warren Buffett personally?

The relevant filing is made by Berkshire Hathaway Inc. The website therefore describes the holdings as Berkshire's reported holdings rather than claiming that each security is personally owned by Warren Buffett.