Qube Research & Technologies Ltd BRK/B — BERKSHIRE HATHAWAY INC DEL

Ownership history in Qube Research & Technologies Ltd  ·  58 quarters on record

AI Ownership Summary

Qube Research & Technologies Ltd reported BERKSHIRE HATHAWAY INC DEL (BRK/B) in 58 quarterly 13F filings from 2024 Q1 through 2026 Q2. Peak portfolio weight reached 0.62% in 2024 Q2. The latest visible filing shows BRK/B at 0.36% 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 Qube Research & Technologies Ltd'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 Q2

BRK/B was reported at 0.36% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.62% in 2024 Q2

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 Q2

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 Qube Research & Technologies Ltd fund profile Qube Research & Technologies Ltd full holdings
How Qube Research & Technologies Ltd held BRK/B — position size vs. price
% of Fund (quarterly)
📋 Quarterly Holdings History 28 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 ADDED — — — 781,970 +693,770 +786.6% 0.36% $391.3M 2026-08-14 $469.32
2026 Q2 ADDED — — — 88,200 +29,600 +50.5% 0.04% $44.1M 2026-08-14 $469.32
2026 Q2 REDUCED — — — 58,600 -212,939 -78.4% 0.03% $29.3M 2026-08-14 $469.32
2026 Q1 ADDED — — — 271,539 +92,039 +51.3% 0.14% $130.1M 2026-05-15 $469.32
2026 Q1 ADDED — — — 179,500 +91,900 +104.9% 0.10% $86.0M 2026-05-15 $469.32
2026 Q1 REDUCED — — — 87,600 -672,417 -88.5% 0.05% $42.0M 2026-05-15 $469.32
2025 Q4 ADDED — — — 760,017 +503,017 +195.7% 0.39% $382.0M 2026-02-17 $503.41
2025 Q4 ADDED — — — 257,000 +41,200 +19.1% 0.13% $129.2M 2026-02-17 $503.41
2025 Q4 REDUCED — — — 215,800 -263,980 -55.0% 0.11% $108.5M 2026-02-17 $503.41
2025 Q3 ADDED — — — 479,780 +285,780 +147.3% 0.25% $241.2M 2025-11-14 $508.94
2025 Q3 ADDED — — — 194,000 +45,700 +30.8% 0.10% $97.5M 2025-11-14 $508.94
2025 Q3 REDUCED — — — 148,300 -567,232 -79.3% 0.08% $74.6M 2025-11-14 $508.94
2025 Q2 ADDED — — — 715,532 +503,832 +238.0% 0.35% $347.6M 2025-08-14 $479.22
2025 Q2 REDUCED — — — 211,700 -19,600 -8.5% 0.10% $102.8M 2025-08-14 $479.22
2025 Q2 REDUCED — — — 231,300 -150,400 -39.4% 0.11% $112.4M 2025-08-14 $479.22
2025 Q1 ADDED — — — 381,700 +257,200 +206.6% 0.24% $203.3M 2025-05-15 $507.33
2025 Q1 REDUCED — — — 124,500 -263,356 -67.9% 0.08% $66.3M 2025-05-15 $507.33
2024 Q4 ADDED — — — 387,856 +202,256 +109.0% 0.23% $175.8M 2025-02-14 $479.59
2024 Q4 ADDED — — — 185,600 +61,600 +49.7% 0.11% $84.1M 2025-02-14 $479.59
2024 Q4 REDUCED — — — 124,000 -563,761 -82.0% 0.07% $56.2M 2025-02-14 $479.59
2024 Q3 ADDED — — — 687,761 +504,961 +276.2% 0.47% $316.5M 2024-11-14 $467.70
2024 Q3 ADDED — — — 182,800 +136,800 +297.4% 0.12% $84.1M 2024-11-14 $467.70
2024 Q3 REDUCED — — — 46,000 -918,007 -95.2% 0.03% $21.2M 2024-11-14 $467.70
2024 Q2 ADDED — — — 964,007 +795,007 +470.4% 0.62% $392.2M 2024-08-14 $438.47
2024 Q2 ADDED — — — 169,000 +154,000 +1026.7% 0.11% $68.7M 2024-08-14 $438.47
2024 Q2 REDUCED — — — 15,000 -406,045 -96.4% 0.01% $6.1M 2024-08-14 $438.47
2024 Q1 ADDED — — — 421,045 +302,045 +253.8% 0.28% $177.1M 2024-05-14 $410.24
2024 Q1 REDUCED — — — 119,000 -915,948 -88.5% 0.08% $50.0M 2024-05-14 $410.24
30 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding BRK/B

As of 2026 Q2 — sorted by position size

TETRAD CORP 92.03% Pangea Capital Gestao de Recursos Ltda. 81.45% 1922 Investment Co LLC 3Y 7Y 74.85% Daniel Investment Group, Inc. 56.49% CHECK CAPITAL MANAGEMENT INC/CA 3Y 7Y 55.27% Cook & Bynum Capital Management, LLC 3Y 7Y 41.17% Aquamarine Zurich AG 3Y 33.89% Templeton & Phillips Capital Management, LLC 3Y 33.67% Ardent Capital Management, Inc. 3Y 32.92% Pacifica Capital Investments, LLC 3Y 7Y 32.2%

FAQ About Qube Research & Technologies Ltd 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 Qube Research & Technologies Ltd reported owning BRK/B?

Qube Research & Technologies Ltd reported BRK/B across 28 quarterly 13F filings, from 2024 Q1 through 2026 Q2.

What was the largest reported BRK/B position in Qube Research & Technologies Ltd's portfolio?

The largest reported portfolio weight for BRK/B was 0.62% in 2024 Q2.

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

The most recent filing on this page is 2026 Q2, when Qube Research & Technologies Ltd reported 781,970 shares, equal to 0.36% of portfolio, with an estimated market value of $391.3M.

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

The chart compares Qube Research & Technologies Ltd'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 Qube Research & Technologies Ltd time their BRK/B position?

Based on 13F filing dates vs. subsequent BRK/B price moves, Qube Research & Technologies Ltd correctly timed 33 out of 55 reported position changes (60%). The annualised alpha on BRK/B relative to SPY over the holding period was +9.8%.

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