California Water Service Group
US ˙ NYSE ˙ US1307881029

SecurityCWT / California Water Service Group
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership10,894 shares
Latest Disclosed Value $ 493,946
D.a. Davidson & Co. reports 3.92% increase in ownership of CWT / California Water Service Group

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 10,894 shares of California Water Service Group (US:CWT) valued at $493,934 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 10,483 shares of California Water Service Group. This represents a change in shares of 3.92% during the quarter. The current value of the position is $487,506 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)
2026-05-05 2026-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,894 411 3.92 494 8.59 0.0030
2026-01-29 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,483 -64 -0.61 454 -6.20 0.0028
2025-10-22 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,547 -658 -5.87 484 -4.91 0.0031
2025-07-30 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 11,205 -496 -4.24 510 -10.23 0.0036
2025-04-28 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 11,701 2,143 22.42 567 30.95 0.0046
2025-01-31 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,558 -166 -1.71 433 -17.84 0.0035
2024-11-13 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,724 601 6.59 527 19.23 0.0044
2024-08-01 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,123 -715 -7.27 442 -3.28 0.0039
2024-05-13 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,838 -99 -1.00 457 -11.26 0.0041
2024-02-09 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,937 100 1.02 515 10.75 0.0051
2023-11-08 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,837 1 0.01 465 -8.28 0.0051
2023-08-11 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,836 166 1.72 508 -9.79 0.0054
2023-04-25 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,670 1 0.01 563 -4.10 0.0063
2023-02-03 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,669 0 0.00 586 15.13 0.0069
2022-11-07 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,669 1 0.01 509 -5.21 0.0067
2022-07-28 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,668 -95 -0.97 537 -7.25 0.0067
2022-05-12 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,763 1 0.01 579 -17.52 0.0063
2022-01-31 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,762 0 0.00 702 22.09 0.0075
2021-11-15 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,762 100 1.03 575 7.08 0.0067
2021-08-10 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,662 1 0.01 537 -1.29 0.0063
2021-05-07 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,661 181 1.91 544 6.25 0.0070
2021-02-10 2020-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,480 -500 -5.01 512 17.97 0.0078
2020-11-02 2020-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,980 0 0.00 434 -8.82 0.0076
2020-08-10 2020-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,980 -525 -5.00 476 -10.02 0.0089
2020-05-05 2020-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,505 275 2.69 529 0.38 0.0103
2020-02-14 2019-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,230 0 0.00 527 -2.59 0.0085
2019-11-05 2019-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,230 475 4.87 541 9.51 0.0097
2019-08-13 2019-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,755 -3,709 -27.55 494 -23.88 0.0092
2019-05-13 2019-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 13,464 3,709 38.02 649 39.57 0.0112
2019-01-29 2018-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,755 0 0.00 465 11.24 0.0091
2018-11-13 2018-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,755 0 0.00 418 10.00 0.0074
2018-08-02 2018-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,755 0 0.00 380 4.68 0.0074
2018-05-04 2018-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,755 -225 -2.25 363 -19.87 0.0075
2018-02-08 2017-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,980 100 1.01 453 20.48 0.0095
2017-11-08 2017-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 9,880 1,000 11.26 376 15.34 0.0074
2017-08-11 2017-06-30 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 8,880 0 0.00 326 2.52 0.0074
2017-05-12 2017-03-31 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 8,880 -1,000 -10.12 318 -4.79 0.0077
2017-02-15 2016-12-31 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 9,880 1,000 11.26 334 17.61 0.0076
2016-11-18 2016-09-30 13F/A-1 CALIFORNIA WATER SERVICE GROUP COM 130788102 8,880 8,880 284 0.0071
2016-11-14 2016-09-30 13F CALIFORNIA WATER SERVICE GROUP COM 130788102 8,880 284 0.0071
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.