← Back to Home

What Buffett Said?

Search Berkshire Hathaway’s shareholder letters with source context and evidence checks.

May 2026 · Personal project

Overview

BuffettRAG answers questions about 48 Berkshire Hathaway shareholder letters (1977 to 2024), stored as 5,831 paragraph records. Each answer comes with its source passages, and an evidence gate refuses to answer when the letters do not support one.

What I built

Explore: recorded questions

What did Buffett say about derivatives being weapons of mass destruction?

Buffett described derivatives as “financial weapons of mass destruction.” He warned that long-term derivatives contracts and large uncollateralized receivables could create latent but potentially lethal risks. He also emphasized Berkshire’s need to remain a fortress of financial strength.

“In our view, however, derivatives are financial weapons of mass destruction, carrying dangers that, while now latent, are potentially lethal.” (Excerpt 2002_86)

Results

Limits

Links

Letters © Berkshire Hathaway.