Watsco, Inc.
MX ˙ BMV ˙ US9426222009
SecurityMX:WSO / Watsco, Inc.
InstitutionBath Savings Trust Co
Latest Disclosed Ownership37,618 shares
Latest Disclosed Value $ 13,684,688
Bath Savings Trust Co reports 2.26% decrease in ownership of WSO / Watsco, Inc.

On April 7, 2026 - Bath Savings Trust Co filed a 13F-HR form disclosing ownership of 37,618 shares of Watsco, Inc. (MX:WSO) valued at $13,684,688 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)
2026-04-07 2026-03-31 13F WATSCO Common Stock 942622200 37,618 -870 -2.26 13,685 5.52 1.0574
2026-01-12 2025-12-31 13F WATSCO Common Stock 942622200 38,488 -502 -1.29 12,968 -17.73 1.2944
2025-10-09 2025-09-30 13F WATSCO Common Stock 942622200 38,990 -201 -0.51 15,763 -8.92 1.5606
2025-07-10 2025-06-30 13F WATSCO Common Stock 942622200 39,191 -123 -0.31 17,307 -13.39 1.7521
2025-04-07 2025-03-31 13F WATSCO Common Stock 942622200 39,314 -215 -0.54 19,983 6.68 2.0670
2025-01-07 2024-12-31 13F WATSCO Common Stock 942622200 39,529 -671 -1.67 18,732 -5.26 1.9029
2024-10-07 2024-09-30 13F WATSCO Common Stock 942622200 40,200 -168 -0.42 19,774 5.74 1.9646
2024-07-12 2024-06-30 13F WATSCO Common Stock 942622200 40,368 -685 -1.67 18,700 5.45 1.4184
2024-07-12 2024-06-30 13F WATSCO Common Stock 942622200 40,368 18,700
2024-04-08 2024-03-31 13F WATSCO Common Stock 942622200 41,053 52 0.13 17,734 0.94 1.8824
2024-01-09 2023-12-31 13F WATSCO Common Stock 942622200 41,001 331 0.81 17,568 14.36 1.9693
2023-10-12 2023-09-30 13F WATSCO Common Stock 942622200 40,670 248 0.61 15,362 -0.38 1.8874
2023-07-12 2023-06-30 13F WATSCO Common Stock 942622200 40,422 1,077 2.74 15,420 23.17 1.7999
2023-04-12 2023-03-31 13F WATSCO Common Stock 942622200 39,345 1,478 3.90 12,518 138,988.89 1.5410
2023-01-12 2022-12-31 13F WATSCO Common Stock 942622200 37,867 1,178 3.21 9 -99.90 1.2183
2022-10-05 2022-09-30 13F WATSCO Common Stock 942622200 36,689 1,811 5.19 9,446 13.41 1.3135
2022-07-07 2022-06-30 13F WATSCO Common Stock 942622200 34,878 2,552 7.89 8,329 -15.42 1.0945
2022-04-07 2022-03-31 13F WATSCO Common Stock 942622200 32,326 1,443 4.67 9,848 1.93 1.1238
2022-01-03 2021-12-31 13F WATSCO Common Stock 942622200 30,883 1,804 6.20 9,662 25.56 1.0047
2021-10-06 2021-09-30 13F WATSCO Common Stock 942622200 29,079 1,035 3.69 7,695 -4.28 0.8896
2021-07-07 2021-06-30 13F WATSCO Common Stock 942622200 28,044 195 0.70 8,039 10.71 0.9484
2021-04-08 2021-03-31 13F WATSCO Common Stock 942622200 27,849 907 3.37 7,261 18.95 0.9268
2021-01-13 2020-12-31 13F WATSCO Common Stock 942622200 26,942 322 1.21 6,104 -1.55 0.8058
2020-10-01 2020-09-30 13F WATSCO Common Stock 942622200 26,620 1,302 5.14 6,200 37.81 1.0170
2020-07-06 2020-06-30 13F WATSCO Common Stock 942622200 25,318 625 2.53 4,499 15.30 0.8135
2020-04-01 2020-03-31 13F WATSCO Common Stock 942622200 24,693 -1,920 -7.21 3,902 -18.61 0.8454
2020-01-09 2019-12-31 13F WATSCO Common Stock 942622200 26,613 -245 -0.91 4,794 5.50 0.8658
2019-10-03 2019-09-30 13F WATSCO Common Stock 942622200 26,858 -1,370 -4.85 4,544 -1.56 0.8718
2019-07-01 2019-06-30 13F WATSCO Common Stock 942622200 28,228 20 0.07 4,616 14.26 0.9175
2019-04-02 2019-03-31 13F WATSCO Common Stock 942622200 28,208 -400 -1.40 4,040 1.51 0.8515
2019-01-04 2018-12-31 13F WATSCO Common Stock 942622200 28,608 -475 -1.63 3,980 -23.17 0.9866
2018-10-05 2018-09-30 13F WATSCO Common Stock 942622200 29,083 -279 -0.95 5,180 -1.05 1.1309
2018-07-05 2018-06-30 13F WATSCO Common Stock 942622200 29,362 775 2.71 5,235 1.18 1.2338
2018-04-03 2018-03-31 13F WATSCO Common Stock 942622200 28,587 1,226 4.48 5,174 11.22 1.2930
2018-01-10 2017-12-31 13F WATSCO Common Stock 942622200 27,361 1,940 7.63 4,652 13.63 1.1694
2017-10-02 2017-09-30 13F WATSCO Common Stock 942622200 25,421 4,952 24.19 4,094 29.68 1.0940
2017-07-05 2017-06-30 13F WATSCO Common Stock 942622200 20,469 8,209 66.96 3,157 79.78 0.8757
2017-04-03 2017-03-31 13F WATSCO Common Stock 942622200 12,260 12,260 1,756 0.5129
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.