BUFFETT WARREN E

6 filings 1 distinct issuers Active 2018-07-18 → 2026-07-15

Track Record

Total filings

1 SCHEDULE 13D/A · 1 SCHEDULE · 4 SC

Distinct issuers

17% issuer diversity

Median stake

37.6%

193,204 avg shares

AI briefs cached

0/6

intent-classified filings

Backtested Performance · post-filing returns (split + dividend adjusted)

Median 30d

-1.2%

across 1 filings · win rate 0%

Median 60d

+0.9%

across 1 filings · win rate 100%

Median 90d

+2.0%

across 1 filings · win rate 100%

Median 1y

+1.7%

across 1 filings · win rate 100%

Anchor: closest trading day on/after filing's date_of_event. Source: Yahoo Finance daily adj_close. Past performance is not indicative of future results.

Filings · 6 total

Filed	Form	Issuer	Stake	Shares
2026-07-15	SCHEDULE 13D/A	Berkshire Hathaway Inc.BRK-A	38.20%	188,290	view →
2025-06-30	SCHEDULE	BERKSHIRE HATHAWAY INCBRK-A	37.00%	198,117	view →
2021-06-23	SC	BERKSHIRE HATHAWAY INCBRK-A	—	—	view →
2020-07-08	SC	BERKSHIRE HATHAWAY INCBRK-A	—	—	view →
2019-07-02	SC	BERKSHIRE HATHAWAY INCBRK-A	—	—	view →
2018-07-18	SC	BERKSHIRE HATHAWAY INCBRK-A	—	—	view →

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