Berkshire Hathaway Inc.
US ˙ NYSE ˙ US0846707026

SecurityBRK.B / Berkshire Hathaway Inc.
InstitutionBlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I
Latest Disclosed Ownership1,491 shares
Latest Disclosed Value $ 724,283
BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I reports 14.46% decrease in ownership of BRK.B / Berkshire Hathaway Inc.

On August 28, 2025 - BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I filed a NPORT-P form disclosing ownership of 1,491 shares of Berkshire Hathaway Inc. (US:BRK.B) valued at $724,283 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 27, 2025 disclosing 1,743 shares of Berkshire Hathaway Inc.. This represents a change in shares of -14.46% during the quarter. The current value of the position is $699,756 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-08-28 2025-06-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 1,491 -252 -14.46 724 -21.98 0.4769
2025-05-27 2025-03-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 1,743 -968 -35.71 928 -24.43 0.6195
2025-02-27 2024-12-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 2,711 -530 -16.35 1,229 -17.64 0.7596
2024-11-26 2024-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 3,241 308 10.50 1,492 24.98 0.9169
2024-08-27 2024-06-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 2,933 -750 -20.36 1,193 -22.93 0.7218
2024-05-28 2024-03-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 3,683 803 27.88 1,549 50.73 0.9047
2024-02-27 2023-12-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 2,880 -1,409 -32.85 1,027 -31.62 0.6161
2023-11-22 2023-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 4,289 378 9.67 1,502 12.68 0.9038
2023-08-25 2023-06-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 3,911 -695 -15.09 1,334 -6.26 0.7801
2023-05-26 2023-03-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 4,606 339 7.94 1,422 7.89 0.8399
2023-02-24 2022-12-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 4,267 -970 -18.52 1,318 -5.72 0.7571
2022-11-28 2022-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,237 156 3.07 1,398 0.79 0.8211
2022-08-26 2022-06-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,081 -804 -13.66 1,387 -33.19 0.7786
2022-05-25 2022-03-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,885 31 0.53 2,077 18.63 1.0479
2022-02-25 2021-12-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,854 -530 -8.30 1,750 0.46 0.8146
2021-11-26 2021-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 6,384 595 10.28 1,742 8.33 0.7976
2021-08-24 2021-06-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,789 -538 -8.50 1,609 -0.50 0.7304
2021-05-25 2021-03-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 6,327 1,802 39.82 1,616 54.05 0.7371
2021-02-24 2020-12-31 NP Berkshire Hathaway, Inc., Class B EC US0846707026 4,525 -416 -8.42 1,049 -0.29 0.4690
2020-11-24 2020-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 4,941 -815 -14.16 1,052 -12.11 0.4974
2019-11-25 2019-09-30 NP Berkshire Hathaway, Inc., Class B EC US0846707026 5,756 5,756 1,197 0.5094
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.