Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionAddenda Capital Inc.
Latest Disclosed Ownership16,264 shares
Latest Disclosed Value $ 7,793,709
Addenda Capital Inc. ownership in BRKB / Berkshire Hathaway Inc.

On April 15, 2026 - Addenda Capital Inc. filed a 13F-HR form disclosing ownership of 16,264 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $7,793,709 USD as of March 31, 2026.

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)
2026-04-15 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,264 16,264 7,794 0.2195
2020-04-13 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -10,768 -100.00 0 -100.00
2020-01-31 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,768 501 4.88 2,438 14.25 0.1611
2019-10-08 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,267 -37 -0.36 2,134 -2.87 0.1502
2019-07-12 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,304 -8,328 -44.70 2,197 -41.32 0.1592
2019-04-09 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,632 -1,243 -6.25 3,744 -7.76 0.2712
2019-01-14 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,875 19,875 4,059 0.3563
2018-10-16 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -59,108 -100.00 0 -100.00
2018-07-12 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 59,108 28,241 91.49 11,426 85.61 0.4271
2018-04-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 30,867 -920 -2.89 6,156 -2.30 0.4626
2018-01-12 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,787 -2,181 -6.42 6,301 1.19 0.4347
2017-10-11 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,968 -1,311 -3.72 6,227 4.22 0.4352
2017-08-04 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,279 -1,457 -3.97 5,975 -2.43 0.4459
2017-04-10 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,736 410 1.13 6,124 3.43 0.4726
2017-01-31 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,326 3,783 11.62 5,921 25.66 0.4732
2016-10-17 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,543 0 0.00 4,712 0.00 0.3917
2016-08-10 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,543 571 1.79 4,712 3.86 0.3919
2016-05-04 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,972 -11,274 -26.07 4,537 -20.54 0.3965
2016-01-20 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 43,246 -3,356 -7.20 5,710 -6.04 0.5384
2015-11-13 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,602 -1,128 -2.36 6,077 -6.46 0.5789
2015-07-08 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 47,730 6,184 14.88 6,497 8.36 0.5533
2015-05-15 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 41,546 41,546 0.00 5,996 0.5074
2015-02-05 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -38,873 -100.00 0 -100.00
2014-11-04 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 38,873 -3,836 -8.98 5,370 -0.65 0.4723
2014-07-31 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 42,709 5,200 13.86 5,405 15.32 0.4581
2014-05-06 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,509 -2,736 -6.80 4,687 -1.76 0.4213
2014-02-13 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 40,245 -2,120 -5.00 4,771 -0.79 0.4246
2013-11-06 2013-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 42,365 2,420 6.06 4,809 8.65 0.4420
2013-11-04 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 39,945 4,426
2013-08-12 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 39,945 39,945 4,426 0.4324
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.