BERKSHIRE HATHAWAY INC-CL B · CUSIP 084670702 · CIK 1997464
As of 2026-06-30, Marex Group plc reported 172.13K BRK.B (shares), valued at $86.13M, or 0.64% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares increased 838.36%; reported value increased 879.85%, and weight changed +0.55 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 0.64% | 172,132 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 0.09% | 18,344 | SEC filing ↗Filed May 13, 2026 |
| Q4 2025 | 0.26% | 47,971 | SEC filing ↗Filed Feb 12, 2026 |
| Q3 2025 | 0.76% | 122,887 | SEC filing ↗Filed Nov 14, 2025 |
| Q2 2025 | 1.92% | 207,826 | SEC filing ↗Filed Aug 19, 2025 |
| Q1 2025 | 1.16% | 113,581 | SEC filing ↗Filed Apr 2, 2026 |
| Q4 2024 | 1.61% | 208,162 | SEC filing ↗Filed Apr 2, 2026 |
| Q3 2024 | 1.12% | 106,633 | SEC filing ↗Filed Apr 7, 2026 |
| Q2 2024 | 0.02% | 1,673 | SEC filing ↗Filed Apr 2, 2026 |
| Q1 2024 | Not reported | Not reported | — |
| Q4 2023 | 0.23% | 16,095 | SEC filing ↗Filed Apr 2, 2026 |
| Q3 2023 | 0.05% | 1,000 | SEC filing ↗Filed Apr 2, 2026 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 0.05% | 1,000 | $350.30K | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Apr 2, 2026 |
| Q4 2023 | 0.23% | 16,095 | $5.74M | Shares increased 1509.50%; reported value increased 1538.72%, and weight changed +0.18 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 2, 2026 |
| Q1 2024 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q2 2024 | 0.02% | 1,673 | $680.58K | A comparable prior-quarter record is unavailable; changes are not inferred. | SEC filing ↗ Filed Apr 2, 2026 |
| Q3 2024 | 1.12% | 106,633 | $49.08M | Shares increased 6273.76%; reported value increased 7111.38%, and weight changed +1.10 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 7, 2026 |
| Q4 2024 | 1.61% | 208,162 | $94.36M | Shares increased 95.21%; reported value increased 92.25%, and weight changed +0.49 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 2, 2026 |
| Q1 2025 | 1.16% | 113,581 | $60.49M | Shares decreased 45.44%; reported value decreased 35.89%, and weight changed -0.45 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 2, 2026 |
| Q2 2025 | 1.92% | 207,826 | $100.96M | Shares increased 82.98%; reported value increased 66.89%, and weight changed +0.76 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 19, 2025 |
| Q3 2025 | 0.76% | 122,887 | $61.78M | Shares decreased 40.87%; reported value decreased 38.80%, and weight changed -1.16 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2025 |
| Q4 2025 | 0.26% | 47,971 | $24.11M | Shares decreased 60.96%; reported value decreased 60.97%, and weight changed -0.50 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 12, 2026 |
| Q1 2026 | 0.09% | 18,344 | $8.79M | Shares decreased 61.76%; reported value decreased 63.54%, and weight changed -0.17 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 13, 2026 |
| Q2 2026 | 0.64% | 172,132 | $86.13M | Shares increased 838.36%; reported value increased 879.85%, and weight changed +0.55 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.