Watsco, Inc.
US ˙ NYSE ˙ US9426222009

SecurityWSO / Watsco, Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership1,115 shares
Latest Disclosed Value $ 405,651
Assetmark, Inc reports 2.67% increase in ownership of WSO / Watsco, Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 1,115 shares of Watsco, Inc. (US:WSO) valued at $405,626 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,086 shares of Watsco, Inc.. This represents a change in shares of 2.67% during the quarter. The current value of the position is $410,721 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)
2026-05-06 2026-03-31 13F WATSCO COM 942622200 1,115 29 2.67 406 10.66 0.0008
2026-01-23 2025-12-31 13F WATSCO COM 942622200 1,086 -53 -4.65 366 -20.43 0.0007
2025-11-06 2025-09-30 13F WATSCO COM 942622200 1,139 145 14.59 461 4.78 0.0010
2025-08-04 2025-06-30 13F WATSCO COM 942622200 994 339 51.76 439 32.23 0.0010
2025-05-06 2025-03-31 13F WATSCO COM 942622200 655 -7 -1.06 333 6.07 0.0009
2025-02-06 2024-12-31 13F WATSCO COM 942622200 662 50 8.17 314 3.99 0.0009
2024-11-01 2024-09-30 13F WATSCO COM 942622200 612 37 6.43 301 13.16 0.0009
2024-08-13 2024-06-30 13F WATSCO COM 942622200 575 -45 -7.26 266 -0.37 0.0008
2024-05-07 2024-03-31 13F WATSCO COM 942622200 620 192 44.86 268 45.90 0.0009
2024-02-09 2023-12-31 13F WATSCO COM 942622200 428 -835 -66.11 183 -61.64 0.0007
2023-10-27 2023-09-30 13F WATSCO COM 942622200 1,263 -15 -1.17 477 -2.05 0.0019
2023-08-11 2023-06-30 13F WATSCO INC COM COM 942622200 1,278 1,249 4,306.90 488 5,311.11 0.0019
2023-05-05 2023-03-31 13F WATSCO INC COM COM 942622200 29 29 9 0.0000
2022-05-12 2022-03-31 13F WATSCO INC COM COM 942622200 0 -47 -100.00 0 -100.00
2022-02-14 2021-12-31 13F WATSCO INC COM COM 942622200 47 46 4,600.00 15 0.0001
2021-11-12 2021-09-30 13F WATSCO INC COM COM 942622200 1 1 0 0.0000
2021-08-16 2021-06-30 13F WATSCO COM 942622200 0 -18 -100.00 0 -100.00
2021-05-14 2021-03-31 13F WATSCO COM 942622200 18 18 5 0.0000
2020-08-11 2020-06-30 13F WATSCO INC COM COM 942622200 0 -12 -100.00 0 -100.00
2020-05-12 2020-03-31 13F WATSCO INC COM COM 942622200 12 -6 -33.33 2 -33.33 0.0000
2020-02-11 2019-12-31 13F WATSCO INC COM COM 942622200 18 0 0.00 3 0.00 0.0000
2019-11-13 2019-09-30 13F WATSCO INC COM COM 942622200 18 0 0.00 3 0.00 0.0000
2019-08-14 2019-06-30 13F WATSCO INC COM COM 942622200 18 0 0.00 3 0.00 0.0000
2019-05-14 2019-03-31 13F WATSCO INC COM COM 942622200 18 18 3 0.0000
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.