California Water Service Group
US ˙ NYSE ˙ US1307881029

SecurityCWT / California Water Service Group
InstitutionWealth Architects, LLC
Latest Disclosed Ownership6,755 shares
Latest Disclosed Value $ 306,272
Wealth Architects, LLC reports 4.33% decrease in ownership of CWT / California Water Service Group

On May 15, 2026 - Wealth Architects, LLC filed a 13F-HR form disclosing ownership of 6,755 shares of California Water Service Group (US:CWT) valued at $306,272 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,061 shares of California Water Service Group. This represents a change in shares of -4.33% during the quarter. The current value of the position is $302,286 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)
2026-05-15 2026-03-31 13F CALIFORNIA WATER SERVICE GROUP Equities 130788102 6,755 -306 -4.33 306 0.33 0.0273
2026-02-17 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 7,061 -174 -2.40 306 -8.13 0.0276
2025-11-13 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 7,235 287 4.13 332 5.40 0.0314
2025-07-25 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,948 47 0.68 316 -5.69 0.0321
2025-05-14 2025-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 6,901 328 4.99 334 12.46 0.0369
2025-05-12 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 2,530 -4,043 326 0.0360
2025-02-10 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,573 -9 -0.14 298 -16.57 0.0336
2024-10-31 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,582 86 1.32 357 13.38 0.0404
2024-08-08 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,496 41 0.64 315 4.67 0.0385
2024-05-13 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,455 -146 -2.21 300 -12.28 0.0395
2024-02-14 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,601 18 0.27 342 9.97 0.0480
2023-11-09 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,583 88 1.35 311 -7.16 0.0530
2023-08-02 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,495 -76 -1.16 335 -12.30 0.0553
2023-04-21 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,571 0 0.00 382 -4.02 0.0677
2023-02-10 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,571 -1 -0.02 398 15.03 0.0754
2022-10-24 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,572 50 0.77 346 -4.42 0.0724
2022-07-29 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,522 -51 -0.78 362 -7.18 0.0707
2022-05-17 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,573 101 1.56 390 -16.13 0.0663
2022-01-19 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,472 8 0.12 465 22.05 0.0815
2021-11-09 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,464 -228 -3.41 381 2.42 0.0739
2021-08-09 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,692 190 2.92 372 1.64 0.0729
2021-04-29 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,502 65 1.01 366 5.17 0.0792
2021-01-28 2020-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,437 -1 -0.02 348 24.29 0.0810
2020-11-09 2020-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,438 -148 -2.25 280 -10.83 0.0760
2020-08-14 2020-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,586 0 0.00 314 -5.14 0.0881
2020-04-23 2020-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,586 0 0.00 331 -2.65 0.1148
2020-01-28 2019-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,586 19 0.29 340 -2.30 0.0950
2019-10-23 2019-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 348 4.82 0.1060
2019-07-12 2019-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 332 -6.74 0.1000
2019-05-01 2019-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 356 13.74 0.1110
2019-01-17 2018-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 313 10.99 0.1125
2018-10-04 2018-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 282 10.16 0.0870
2018-07-19 2018-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 256 4.49 0.0829
2018-04-13 2018-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 245 -17.79 0.0811
2018-04-13 2017-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 0.00 298 18.73 0.0977
2018-01-30 2017-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,567 0 298 0.0975
2017-11-08 2017-09-30 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 6,567 0 0.00 251 4.15 0.0873
2017-08-10 2017-06-30 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 6,567 6,567 241 0.0897
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.