Harfst & Associates, Inc. BRK/B — BERKSHIRE HATHAWAYINCORPORATED DEL CLASS B NEW

Ownership history in Harfst & Associates, Inc.  ·  43 quarters on record

AI Ownership Summary

Harfst & Associates, Inc. reported BERKSHIRE HATHAWAYINCORPORATED DEL CLASS B NEW (BRK/B) in 43 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 1.15% in 2024 Q3. The latest visible filing shows BRK/B at 0.76% 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 Harfst & Associates, Inc.'s position in BERKSHIRE HATHAWAYINCORPORATED DEL CLASS B NEW, 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 0.76% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.15% in 2024 Q3

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 Harfst & Associates, Inc. fund profile Harfst & Associates, Inc. full holdings
How Harfst & Associates, Inc. held BRK/B — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 8,913 +50 +0.6% 0.76% $4.3M 2026-05-13 $469.32
2025 Q4 REDUCED — — — 8,863 -201 -2.2% 0.80% $4.5M 2026-02-10 $500.30
2025 Q3 ADDED — — — 9,064 +444 +5.2% 0.84% $4.6M 2025-10-23 $490.16
2025 Q2 REDUCED — — — 8,620 -629 -6.8% 0.86% $4.2M 2025-08-13 $477.31
2025 Q1 REDUCED — — — 9,249 -1,794 -16.2% 1.14% $4.9M 2025-05-13 $511.88
2024 Q4 REDUCED — — — 11,043 -67 -0.6% 1.04% $5.0M 2025-02-05 $473.73
2024 Q3 ADDED — — — 11,110 +229 +2.1% 1.15% $5.1M 2024-10-18 $464.80
2024 Q2 REDUCED — — — 10,881 -173 -1.6% 1.03% $4.4M 2024-08-01 $431.81
2023 Q4 REDUCED — — — 11,054 -165 -1.5% 1.04% $3.9M 2024-02-07 $397.66
34 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% Cook & Bynum Capital Management, LLC 3Y 7Y 42.7% 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%

FAQ About Harfst & Associates, Inc. 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 Harfst & Associates, Inc. reported owning BRK/B?

Harfst & Associates, Inc. reported BRK/B across 9 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported BRK/B position in Harfst & Associates, Inc.'s portfolio?

The largest reported portfolio weight for BRK/B was 1.15% in 2024 Q3.

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

The most recent filing on this page is 2026 Q1, when Harfst & Associates, Inc. reported 8,913 shares, equal to 0.76% of portfolio, with an estimated market value of $4.3M.

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

The chart compares Harfst & Associates, Inc.'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 Harfst & Associates, Inc. time their BRK/B position?

Based on 13F filing dates vs. subsequent BRK/B price moves, Harfst & Associates, Inc. correctly timed 18 out of 34 reported position changes (53%). The annualised alpha on BRK/B relative to SPY over the holding period was -2.4%.

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