Watsco, Inc.
US ˙ NYSE ˙ US9426222009

SecurityWSO / Watsco, Inc.
InstitutionMarkel Corp
Latest Disclosed Ownership582,169 shares
Latest Disclosed Value $ 211,787,262
Markel Corp reports 0.78% increase in ownership of WSO / Watsco, Inc.

On May 1, 2026 - Markel Corp filed a 13F-HR form disclosing ownership of 582,169 shares of Watsco, Inc. (US:WSO) valued at $211,787,261 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 577,669 shares of Watsco, Inc.. This represents a change in shares of 0.78% during the quarter. The current value of the position is $214,447,773 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)
2026-05-01 2026-03-31 13F WATSCO COM 942622200 582,169 4,500 0.78 211,787 8.81 1.7739
2026-02-06 2025-12-31 13F WATSCO COM 942622200 577,669 12,500 2.21 194,646 -14.82 1.5517
2025-10-31 2025-09-30 13F WATSCO COM 942622200 565,169 0 0.00 228,498 -8.45 1.8545
2025-08-01 2025-06-30 13F WATSCO COM 942622200 565,169 -25,331 -4.29 249,590 -16.85 2.1102
2025-05-02 2025-03-31 13F WATSCO COM 942622200 590,500 0 0.00 300,151 7.26 2.6653
2025-02-07 2024-12-31 13F WATSCO COM 942622200 590,500 8,000 1.37 279,832 -2.33 2.4667
2024-11-01 2024-09-30 13F WATSCO COM 942622200 582,500 11,250 1.97 286,520 8.27 2.5788
2024-08-02 2024-06-30 13F WATSCO COM 942622200 571,250 5,000 0.88 264,626 8.19 2.6032
2024-05-03 2024-03-31 13F WATSCO COM 942622200 566,250 9,500 1.71 244,603 2.54 2.4122
2024-02-02 2023-12-31 13F WATSCO COM 942622200 556,750 11,000 2.02 238,551 15.72 2.5933
2023-11-03 2023-09-30 13F WATSCO COM 942622200 545,750 6,500 1.21 206,141 0.21 2.4885
2023-08-04 2023-06-30 13F WATSCO COM 942622200 539,250 10,500 1.99 205,708 22.28 2.4492
2023-04-28 2023-03-31 13F WATSCO COM 942622200 528,750 28,500 5.70 168,227 34.84 2.1403
2023-02-03 2022-12-31 13F WATSCO COM 942622200 500,250 38,000 8.22 124,762 4.83 1.6728
2022-11-04 2022-09-30 13F WATSCO COM 942622200 462,250 18,500 4.17 119,009 12.30 1.7566
2022-08-05 2022-06-30 13F WATSCO COM 942622200 443,750 25,000 5.97 105,976 -16.93 1.5151
2022-04-29 2022-03-31 13F WATSCO COM 942622200 418,750 0 0.00 127,568 -2.63 1.4161
2022-04-29 2022-03-31 13F WATSCO COM 942622200 27,100 8,256
2022-02-04 2021-12-31 13F WATSCO COM 942622200 418,750 4,500 1.09 131,018 19.52 1.5074
2021-11-05 2021-09-30 13F WATSCO COM 942622200 414,250 7,750 1.91 109,619 -5.92 1.3858
2021-08-06 2021-06-30 13F WATSCO COM 942622200 406,500 3,000 0.74 116,519 10.75 1.4750
2021-04-30 2021-03-31 13F WATSCO COM 942622200 403,500 4,500 1.13 105,212 16.39 1.4562
2021-02-05 2020-12-31 13F WATSCO COM 942622200 399,000 2,000 0.50 90,394 -2.23 1.3466
2020-10-30 2020-09-30 13F Watsco COM 942622200 397,000 0 0.00 92,457 31.06 1.5679
2020-08-03 2020-06-30 13F Watsco COM 942622200 397,000 0 0.00 70,547 12.45 1.3142
2020-05-01 2020-03-31 13F Watsco COM 942622200 397,000 9,500 2.45 62,738 -10.13 1.1800
2020-02-07 2019-12-31 13F Watsco COM 942622200 387,500 11,000 2.92 69,808 9.60 0.9692
2019-11-01 2019-09-30 13F Watsco COM 942622200 376,500 20,500 5.76 63,696 9.41 0.9624
2019-08-02 2019-06-30 13F Watsco COM 942622200 356,000 27,000 8.21 58,217 23.56 0.8951
2019-05-03 2019-03-31 13F Watsco COM 942622200 329,000 34,000 11.53 47,116 14.79 0.7896
2019-02-08 2018-12-31 13F Watsco COM 942622200 295,000 3,000 1.03 41,046 -21.07 0.7842
2018-11-02 2018-09-30 13F Watsco COM 942622200 292,000 16,000 5.80 52,005 5.69 0.8771
2018-08-03 2018-06-30 13F Watsco COM 942622200 276,000 17,500 6.77 49,205 5.18 0.9031
2018-04-27 2018-03-31 13F Watsco COM 942622200 258,500 23,000 9.77 46,781 16.82 0.8893
2018-02-09 2017-12-31 13F Watsco COM 942622200 235,500 0 0.00 40,044 5.57 0.7561
2017-10-27 2017-09-30 13F Watsco COM 942622200 235,500 16,000 7.29 37,932 12.07 0.7552
2017-07-28 2017-06-30 13F Watsco COM 942622200 219,500 21,000 10.58 33,847 19.09 0.7219
2017-04-28 2017-03-31 13F Watsco COM 942622200 198,500 9,500 5.03 28,421 1.52 0.6403
2017-02-10 2016-12-31 13F Watsco COM 942622200 189,000 11,500 6.48 27,995 11.94 0.6747
2016-11-04 2016-09-30 13F Watsco COM 942622200 177,500 27,000 17.94 25,010 18.12 0.6447
2016-08-05 2016-06-30 13F Watsco COM 942622200 150,500 23,100 18.13 21,174 23.35 0.5581
2016-05-06 2016-03-31 13F Watsco COM 942622200 127,400 2,400 1.92 17,166 17.25 0.4608
2016-02-16 2015-12-31 13F Watsco COM 942622200 125,000 16,000 14.68 14,641 13.37 0.3963
2015-11-09 2015-09-30 13F Watsco COM 942622200 109,000 16,000 17.20 12,914 12.22 0.3402
2015-08-14 2015-06-30 13F Watsco COM 942622200 93,000 35,000 60.34 11,508 57.84 0.2874
2015-05-07 2015-03-31 13F Watsco COM 942622200 58,000 56,000 2,800.00 7,291 3,307.01 0.1843
2015-02-09 2014-12-31 13F Watsco COM 942622200 2,000 2,000 214 0.0056
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.