Berkshire Hathaway Inc.
DE ˙ XTRA
424,90 € ↑16,80 (4,12%)
2026-06-05
DEL PRIS
SecurityDE:BRYN / Berkshire Hathaway Inc.
InstitutionCarderock Capital Management Inc
Latest Disclosed Ownership1,500 shares
Latest Disclosed Value $ 718,800
Carderock Capital Management Inc reports 91.08% increase in ownership of BRYN / Berkshire Hathaway Inc.

On April 10, 2026 - Carderock Capital Management Inc filed a 13F-HR form disclosing ownership of 1,500 shares of Berkshire Hathaway Inc. (DE:BRYN) valued at $620,925 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 785 shares of Berkshire Hathaway Inc.. This represents a change in shares of 91.08% during the quarter. The current value of the position is $637,350 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)
2026-04-10 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,500 715 91.08 719 82.23 0.1776
2026-01-09 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 785 0 0.00 395 0.00 0.0956
2025-10-17 2025-09-30 13F Berkshire Hathaway Cl B COM 084670702 785 0 0.00 395 3.41 0.0960
2025-07-10 2025-06-30 13F Berkshire Hathaway Cl B COM 084670702 785 105 15.44 381 5.25 0.0977
2025-05-27 2025-03-31 13F Berkshire Hathaway Cl B COM 084670702 680 -165 -19.53 362 -5.48 0.0960
2025-01-15 2024-12-31 13F Berkshire Hathaway Cl B COM 084670702 845 -5 -0.59 383 -2.05 0.0961
2024-10-16 2024-09-30 13F Berkshire Hathaway Cl B COM 084670702 850 -125 -12.82 391 -1.26 0.0924
2024-07-22 2024-06-30 13F Berkshire Hathaway Cl B COM 084670702 975 -735 -42.98 397 -44.92 0.1038
2024-04-23 2024-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,710 525 44.30 719 70.38 0.2016
2024-01-23 2023-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,185 -55 -4.44 423 -2.76 0.1167
2023-10-23 2023-09-30 13F Berkshire Hathaway Cl B COM 084670702 1,240 0 0.00 434 0.1458
2023-07-25 2023-06-30 13F Berkshire Hathaway Cl B COM 084670702 1,240 0 0.00 0 -100.00 0.1312
2023-04-19 2023-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,240 -10 -0.80 383 0.1334
2023-01-20 2022-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,250 0 0.00 0 -100.00 0.1601
2022-11-04 2022-09-30 13F/A-1 Berkshire Hathaway Cl B COM 084670702 1,250 -75 -5.66 334 -7.73 0.1705
2022-10-21 2022-09-30 13F Berkshire Hathaway Cl B COM 084670702 1,325 0 362 0.1512
2022-07-21 2022-06-30 13F Berkshire Hathaway Cl B COM 084670702 1,325 0 0.00 362 -22.65 0.1512
2022-04-28 2022-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,325 0 0.00 468 18.18 0.1511
2022-01-31 2021-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,325 400 43.24 396 57.14 0.0951
2021-10-29 2021-09-30 13F Berkshire Hathaway Cl B COM 084670702 925 -125 -11.90 252 -13.70 0.0710
2021-07-30 2021-06-30 13F Berkshire Hathaway Cl B COM 084670702 1,050 -50 -4.55 292 3.91 0.0801
2021-05-07 2021-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,100 0 0.00 281 10.20 0.0839
2021-02-05 2020-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,100 -50 -4.35 255 4.08 0.0770
2020-10-27 2020-09-30 13F Berkshire Hathaway Cl B COM 084670702 1,150 1,150 245 0.0828
2020-08-04 2020-06-30 13F Berkshire Hathaway Cl B COM 084670702 0 -1,110 -100.00 0 -100.00
2020-05-11 2020-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,110 -50 -4.31 203 -22.81 0.0931
2020-02-04 2019-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,160 0 0.00 263 9.13 0.0883
2019-10-23 2019-09-30 13F Berkshire Hathaway Cl B COM 084670702 1,160 150 14.85 241 12.09 0.0887
2019-07-15 2019-06-30 13F Berkshire Hathaway Cl B COM 084670702 1,010 -88 -8.01 215 -2.71 0.0812
2019-04-23 2019-03-31 13F Berkshire Hathaway Cl B COM 084670702 1,098 0 0.00 221 -1.34 0.0901
2019-02-14 2018-12-31 13F Berkshire Hathaway Cl B COM 084670702 1,098 0 0.00 224 -4.68 0.1157
2018-11-13 2018-09-30 13F Berkshire Hathaway Cl B COM 084670702 1,098 338 44.47 235 147.37 0.0927
2014-05-09 2014-03-31 13F Berkshire Hathaway Cl B COM 084670702 760 760 95 0.0483
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.