PECAUT & CO. BRK/B — BERKSHIRE HATHAWAY INC DEL

Ownership history in PECAUT & CO.  ·  50 quarters on record

AI Ownership Summary

PECAUT & CO. reported BERKSHIRE HATHAWAY INC DEL (BRK/B) in 50 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 11.31% in 2025 Q1. The latest visible filing shows BRK/B at 8.88% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this BRK/B ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was PECAUT & CO.'s position in BERKSHIRE HATHAWAY INC DEL, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

BRK/B was reported at 8.88% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
11.31% in 2025 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

BRK/B stock page PECAUT & CO. fund profile PECAUT & CO. full holdings
How PECAUT & CO. held BRK/B — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 57,101 -1,178 -2.0% 8.88% $27.4M 2026-05-11 $469.32
2025 Q4 REDUCED — — — 58,279 -3,374 -5.5% 9.45% $29.3M 2026-02-10 $500.30
2025 Q3 REDUCED — — — 61,653 -393 -0.6% 9.96% $31.0M 2025-11-03 $475.68
2025 Q2 REDUCED — — — 62,046 -341 -0.5% 10.01% $30.1M 2025-08-14 $479.22
2025 Q1 REDUCED — — — 62,387 -3,230 -4.9% 11.31% $33.2M 2025-05-02 $539.80
2024 Q4 REDUCED — — — 65,617 -539 -0.8% 10.27% $29.7M 2025-02-11 $472.61
2024 Q3 REDUCED — — — 66,156 -783 -1.2% 10.77% $30.4M 2024-11-06 $468.90
2024 Q2 REDUCED — — — 66,939 -1,818 -2.6% 10.30% $27.2M 2024-08-07 $427.02
2024 Q1 REDUCED — — — 68,757 -2,812 -3.9% 10.78% $28.9M 2024-05-07 $406.14
2023 Q4 REDUCED — — — 71,569 -4,283 -5.6% 10.25% $25.5M 2024-02-07 $397.66
40 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BRK/B

As of 2026 Q1 — sorted by position size

TETRAD CORP 92.15% 1922 Investment Co LLC 3Y 7Y 84.86% CHECK CAPITAL MANAGEMENT INC/CA 3Y 7Y 52.8% Templeton & Phillips Capital Management, LLC 3Y 36.02% Aquamarine Zurich AG 3Y 34.57% Ardent Capital Management, Inc. 3Y 32.73% Asset Management Advisors, LLC 3Y 7Y 32.43% United American Securities Inc. (d/b/a UAS Asset Management) 3Y 7Y 31.97% Pacifica Capital Investments, LLC 3Y 7Y 30.79% Intelligent Financial Strategies 3Y 30.53%

FAQ About PECAUT & CO. and BRK/B

These are the practical questions this page is built to answer before you even open the full history table.

How long has PECAUT & CO. reported owning BRK/B?

PECAUT & CO. reported BRK/B across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported BRK/B position in PECAUT & CO.'s portfolio?

The largest reported portfolio weight for BRK/B was 11.31% in 2025 Q1.

What is the latest reported BRK/B position on this page?

The most recent filing on this page is 2026 Q1, when PECAUT & CO. reported 57,101 shares, equal to 8.88% of portfolio, with an estimated market value of $27.4M.

What does the chart on this BRK/B ownership page compare?

The chart compares PECAUT & CO.'s quarterly BRK/B portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did PECAUT & CO. time their BRK/B position?

Based on 13F filing dates vs. subsequent BRK/B price moves, PECAUT & CO. correctly timed 24 out of 49 reported position changes (49%). The annualised alpha on BRK/B relative to SPY over the holding period was -1.5%.

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