California Water Service Group
US ˙ NYSE ˙ US1307881029

SecurityCWT / California Water Service Group
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership12,667 shares
Latest Disclosed Value $ 574,338
Mercer Global Advisors Inc /adv reports 3.25% decrease in ownership of CWT / California Water Service Group

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 12,667 shares of California Water Service Group (US:CWT) valued at $574,322 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,092 shares of California Water Service Group. This represents a change in shares of -3.25% during the quarter. The current value of the position is $580,402 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 WTR SVC GROUP COM 130788102 12,667 -425 -3.25 574 1.23 0.0008
2026-02-17 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 13,092 -36,496 -73.60 567 -75.08 0.0009
2025-11-14 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 49,588 2,339 4.95 2,276 5.91 0.0038
2025-08-14 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 47,249 593 1.27 2,149 -4.96 0.0044
2025-05-15 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 46,656 624 1.36 2,261 8.34 0.0052
2025-02-14 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 46,032 -4,991 -9.78 2,087 -23.87 0.0051
2024-11-14 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 51,023 -3,295 -6.07 2,740 4.06 0.0064
2024-08-12 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 54,318 699 1.30 2,634 131,550.00 0.0072
2024-05-15 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 53,619 1,436 2.75 2 0.00 0.0071
2024-02-15 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 52,183 -104 -0.20 3 0.00 0.0081
2023-11-15 2023-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 52,287 689 1.34 2 0.00 0.0094
2023-11-14 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 52,287 689 2 0.0094
2023-08-14 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 51,598 803 1.58 3 0.00 0.0106
2023-05-16 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 50,795 697 1.39 3 -33.33 0.0134
2023-02-09 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 50,098 4,755 10.49 3 -99.87 0.0152
2022-11-15 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,343 77 0.17 2,389 -5.01 0.0142
2022-08-10 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,266 -1,472 -3.15 2,515 -9.24 0.0154
2022-05-10 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 46,738 -2,074 -4.25 2,771 -21.01 0.0163
2022-02-04 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 48,812 3,683 8.16 3,508 31.93 0.0217
2021-11-10 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,129 -2 -0.00 2,659 6.06 0.0186
2021-08-10 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,131 58 0.13 2,507 -1.26 0.0193
2021-08-10 2021-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 45,073 45,073 2,539 0.0231
2021-05-11 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,073 45,073 2,539 0.0243
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.