ARMSTRONG HENRY H ASSOCIATES INC BRK/A — Berkshire Hath Common

Ownership history in ARMSTRONG HENRY H ASSOCIATES INC  ·  91 quarters on record

AI Ownership Summary

ARMSTRONG HENRY H ASSOCIATES INC reported Berkshire Hath Common (BRK/A) in 91 quarterly 13F filings from 2024 Q1 through 2026 Q1. Peak portfolio weight reached 22.44% in 2025 Q1. The latest visible filing shows BRK/A at 20.05% 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/A ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ARMSTRONG HENRY H ASSOCIATES INC's position in Berkshire Hath 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/A was reported at 20.05% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
22.44% 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
2024 Q1 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/A stock page ARMSTRONG HENRY H ASSOCIATES INC fund profile ARMSTRONG HENRY H ASSOCIATES INC full holdings
How ARMSTRONG HENRY H ASSOCIATES INC held BRK/A — 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 REDUCED — — — 274 -5 -1.8% 20.05% $196.8M 2026-04-07 $716880.00
2025 Q4 REDUCED — — — 279 -5 -1.8% 19.56% $210.6M 2026-01-06 $748000.00
2025 Q3 REDUCED — — — 284 -2 -0.7% 19.37% $214.2M 2025-10-02 $744628.00
2025 Q2 REDUCED — — — 286 -4 -1.4% 19.67% $208.4M 2025-07-07 $716415.00
2025 Q1 REDUCED — — — 290 -2 -0.7% 22.44% $231.5M 2025-04-08 $739101.00
2024 Q4 REDUCED — — — 292 -31 -9.6% 19.87% $198.8M 2025-01-13 $666280.00
2024 Q3 REDUCED — — — 323 -18,521 -98.3% 21.38% $223.3M 2024-10-02 $685000.00
2024 Q2 ADDED — — — 18,844 +18,513 +5593.1% 20.46% $210.0M 2024-07-02 $610668.00
2024 Q1 REDUCED — — — 331 -2 -0.6% 20.43% $210.0M 2024-04-11 $616670.00
82 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BRK/A

As of 2026 Q1 — sorted by position size

NORTHWESTERN UNIVERSITY 3Y 7Y 92.11% Mirae Asset Global Investments Co., Ltd. 3Y 7Y 88.4% Graham Holdings Co Master Retirement Trust 3Y 84.28% University of Maryland Foundation, Inc. 3Y 56.32% Hikari Tsushin, Inc. 3Y 7Y 55.8% Rede Wealth, LLC 3Y 53.73% Hikari Power Ltd 3Y 7Y 47.49% Baldwin Investment Management, LLC 3Y 7Y 46.58% Canton Hathaway, LLC 3Y 7Y 42.02% Punch Card Management L.P. 3Y 7Y 38.47%

FAQ About ARMSTRONG HENRY H ASSOCIATES INC and BRK/A

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

How long has ARMSTRONG HENRY H ASSOCIATES INC reported owning BRK/A?

ARMSTRONG HENRY H ASSOCIATES INC reported BRK/A across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

What was the largest reported BRK/A position in ARMSTRONG HENRY H ASSOCIATES INC's portfolio?

The largest reported portfolio weight for BRK/A was 22.44% in 2025 Q1.

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

The most recent filing on this page is 2026 Q1, when ARMSTRONG HENRY H ASSOCIATES INC reported 274 shares, equal to 20.05% of portfolio, with an estimated market value of $196.8M.

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

The chart compares ARMSTRONG HENRY H ASSOCIATES INC's quarterly BRK/A 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 ARMSTRONG HENRY H ASSOCIATES INC time their BRK/A position?

Based on 13F filing dates vs. subsequent BRK/A price moves, ARMSTRONG HENRY H ASSOCIATES INC correctly timed 34 out of 84 reported position changes (40%). The annualised alpha on BRK/A relative to SPY over the holding period was +-0.0%.

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