BECK MACK & OLIVER LLC BRK/B — BERKSHIRE HATHAWAY CL B COMMON

Ownership history in BECK MACK & OLIVER LLC  ·  109 quarters on record

AI Ownership Summary

BECK MACK & OLIVER LLC reported BERKSHIRE HATHAWAY CL B COMMON (BRK/B) in 109 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 1.46% in 2024 Q1. The latest visible filing shows BRK/B at 0.88% 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 BECK MACK & OLIVER LLC's position in BERKSHIRE HATHAWAY CL B COMMON, 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 0.88% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.46% in 2024 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 BECK MACK & OLIVER LLC fund profile BECK MACK & OLIVER LLC full holdings
How BECK MACK & OLIVER LLC 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 — — — 89,078 -3,089 -3.4% 0.88% $42.7M 2026-05-12 $469.32
2025 Q4 REDUCED — — — 92,167 -1,447 -1.5% 0.84% $46.3M 2026-02-12 $500.01
2025 Q3 REDUCED — — — 93,614 -1,011 -1.1% 0.86% $47.1M 2025-11-14 $508.94
2025 Q2 ADDED — — — 94,625 +3,104 +3.4% 0.88% $46.0M 2025-08-14 $479.22
2025 Q1 REDUCED — — — 91,521 -25,265 -21.6% 0.97% $48.7M 2025-05-15 $507.33
2024 Q4 REDUCED — — — 116,786 -5,693 -4.6% 0.98% $52.9M 2025-02-13 $480.49
2024 Q3 REDUCED — — — 122,479 -14,720 -10.7% 1.10% $56.4M 2024-11-13 $468.10
2024 Q2 REDUCED — — — 137,199 -34,069 -19.9% 1.16% $55.8M 2024-08-14 $438.47
2024 Q1 REDUCED — — — 171,268 -4,568 -2.6% 1.46% $72.0M 2024-05-14 $410.24
2023 Q4 REDUCED — — — 175,836 -1,544 -0.9% 1.46% $62.7M 2024-02-14 $398.68
99 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 BECK MACK & OLIVER LLC 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 BECK MACK & OLIVER LLC reported owning BRK/B?

BECK MACK & OLIVER LLC reported BRK/B across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported BRK/B position in BECK MACK & OLIVER LLC's portfolio?

The largest reported portfolio weight for BRK/B was 1.46% in 2024 Q1.

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

The most recent filing on this page is 2026 Q1, when BECK MACK & OLIVER LLC reported 89,078 shares, equal to 0.88% of portfolio, with an estimated market value of $42.7M.

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

The chart compares BECK MACK & OLIVER LLC'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 BECK MACK & OLIVER LLC time their BRK/B position?

Based on 13F filing dates vs. subsequent BRK/B price moves, BECK MACK & OLIVER LLC correctly timed 48 out of 105 reported position changes (46%). The annualised alpha on BRK/B relative to SPY over the holding period was +0.3%.

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