GARDNER RUSSO & QUINN LLC BRK/A — BERKSHIRE HATHAWAY COM

Ownership history in GARDNER RUSSO & QUINN LLC  ·  86 quarters on record

AI Ownership Summary

GARDNER RUSSO & QUINN LLC reported BERKSHIRE HATHAWAY COM (BRK/A) in 86 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 14.83% in 2025 Q1. The latest visible filing shows BRK/A at 12.34% 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 GARDNER RUSSO & QUINN LLC's position in BERKSHIRE HATHAWAY COM, 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 12.34% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
14.83% 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/A stock page GARDNER RUSSO & QUINN LLC fund profile GARDNER RUSSO & QUINN LLC full holdings
How GARDNER RUSSO & QUINN LLC held BRK/A — 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 — — — 1,460 -28 -1.9% 12.34% $1.05B 2026-05-13 $704760.00
2025 Q4 REDUCED — — — 1,488 -53 -3.4% 12.12% $1.12B 2026-02-12 $749540.00
2025 Q3 REDUCED — — — 1,541 -83 -5.1% 12.46% $1.16B 2025-11-12 $756363.00
2025 Q2 REDUCED — — — 1,624 -33 -2.0% 12.58% $1.18B 2025-08-13 $715490.00
2025 Q1 REDUCED — — — 1,657 -212 -11.3% 14.83% $1.32B 2025-05-13 $767000.00
2024 Q4 REDUCED — — — 1,869 -176 -8.6% 14.39% $1.27B 2025-02-12 $707500.00
2024 Q3 REDUCED — — — 2,045 -69 -3.3% 14.51% $1.41B 2024-11-13 $702250.00
2024 Q2 REDUCED — — — 2,114 -18 -0.8% 13.67% $1.29B 2024-08-13 $649105.00
2024 Q1 REDUCED — — — 2,132 -285 -11.8% 13.88% $1.35B 2024-05-14 $619250.00
2023 Q4 REDUCED — — — 2,417 -65 -2.6% 13.37% $1.31B 2024-02-13 $593850.00
76 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 GARDNER RUSSO & QUINN LLC 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 GARDNER RUSSO & QUINN LLC reported owning BRK/A?

GARDNER RUSSO & QUINN LLC reported BRK/A across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported BRK/A position in GARDNER RUSSO & QUINN LLC's portfolio?

The largest reported portfolio weight for BRK/A was 14.83% 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 GARDNER RUSSO & QUINN LLC reported 1,460 shares, equal to 12.34% of portfolio, with an estimated market value of $1.05B.

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

The chart compares GARDNER RUSSO & QUINN LLC'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 GARDNER RUSSO & QUINN LLC time their BRK/A position?

Based on 13F filing dates vs. subsequent BRK/A price moves, GARDNER RUSSO & QUINN LLC correctly timed 42 out of 85 reported position changes (49%). The annualised alpha on BRK/A relative to SPY over the holding period was -3.1%.

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