California Water Service Group
DE ˙ DB ˙ US1307881029
37,40 € ↓ -1,00 (-2,60%)
2026-06-02
AKTIENPREIS
SecurityDE:WT5 / California Water Service Group
InstitutionUBS Group AG
Latest Disclosed Ownership185,826 shares
Latest Disclosed Value $ 8,425,351
UBS Group AG reports 13.28% decrease in ownership of WT5 / California Water Service Group

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 185,826 shares of California Water Service Group (DE:WT5) valued at $7,433,040 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 214,279 shares of California Water Service Group. This represents a change in shares of -13.28% during the quarter. The current value of the position is $6,949,892 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 185,826 -28,453 -13.28 8,425 -9.25 0.0002
2026-01-29 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 214,279 -25,833 -10.76 9,285 -15.74 0.0015
2025-11-13 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 240,112 68,923 40.26 11,019 41.53 0.0017
2025-08-14 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 171,189 49,690 40.90 7,786 32.24 0.0013
2025-05-13 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 121,499 -19,592 -13.89 5,888 -7.94 0.0011
2025-02-14 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 141,091 47,593 50.90 6,396 26.16 0.0012
2024-11-14 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 93,498 20,121 27.42 5,069 42.47 0.0011
2024-08-14 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 73,377 -25,352 -25.68 3,558 -22.45 0.0009
2024-05-13 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 98,729 19,522 24.65 4,589 11.68 0.0011
2024-02-09 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 79,207 10,925 16.00 4,108 27.18 0.0012
2023-11-09 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 68,282 -21,306 -23.78 3,230 -30.16 0.0011
2023-08-11 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 89,588 42,449 90.05 4,625 68.61 0.0016
2023-05-12 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 47,139 -19,067 -28.80 2,743 -31.66 0.0010
2023-02-08 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 66,206 15,273 29.99 4,015 49.61 0.0015
2022-11-10 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 50,933 5,755 12.74 2,683 6.89 0.0012
2022-08-10 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,178 -12,440 -21.59 2,510 -26.52 0.0010
2022-05-16 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 57,618 4,981 9.46 3,416 -9.68 0.0011
2022-02-14 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 52,637 16,963 47.55 3,782 79.92 0.0011
2021-11-15 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 35,674 768 2.20 2,102 8.46 0.0007
2021-08-13 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 34,906 -20,700 -37.23 1,938 -38.14 0.0006
2021-05-12 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 55,606 5,220 10.36 3,133 15.10 0.0010
2021-02-11 2020-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 50,386 13,259 35.71 2,722 68.75 0.0009
2020-11-12 2020-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 37,127 -5,257 -12.40 1,613 -20.19 0.0006
2020-07-31 2020-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 42,384 -411 -0.96 2,021 -6.17 0.0009
2020-05-01 2020-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 42,795 7,543 21.40 2,154 18.55 0.0010
2020-02-14 2019-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 35,252 -961 -2.65 1,817 -5.22 0.0006
2019-11-14 2019-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 36,213 -4,848 -11.81 1,917 -7.79 0.0007
2019-08-14 2019-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 41,061 3,155 8.32 2,079 1.02 0.0008
2019-05-14 2019-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 37,906 4,879 14.77 2,058 30.75 0.0009
2019-02-14 2018-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 33,027 -1,764 -5.07 1,574 5.50 0.0007
2018-11-14 2018-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 34,791 -1,467 -4.05 1,492 5.67 0.0006
2018-08-14 2018-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 36,258 788 2.22 1,412 6.89 0.0006
2018-05-15 2018-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 35,470 -24,669 -41.02 1,321 -51.56 0.0006
2018-02-14 2017-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 60,139 -5,686 -8.64 2,727 8.60 0.0011
2017-11-14 2017-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 65,825 6,697 11.33 2,511 15.40 0.0012
2017-11-14 2017-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 59,128 -6,935 -10.50 2,176 -8.11 0.0011
2017-08-14 2017-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 59,128 -6,935 2,176
2017-11-14 2017-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 66,063 -18,041 -21.45 2,368 -16.94 0.0013
2017-05-12 2017-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 66,063 -18,041 2,368
2017-02-14 2016-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 84,104 -2,228 -2.58 2,851 2.92 0.0016
2016-11-14 2016-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 86,332 507 0.59 2,770 -7.57 0.0017
2016-08-12 2016-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 85,825 -4,499 -4.98 2,997 24.20 0.0019
2016-05-12 2016-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 90,324 10,583 13.27 2,413 30.01 0.0016
2016-02-16 2015-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 79,741 4,110 5.43 1,856 10.94 0.0012
2015-11-13 2015-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 75,631 -2,506 -3.21 1,673 -6.33 0.0012
2015-08-14 2015-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 78,137 14,676 23.13 1,786 14.78 0.0012
2015-05-14 2015-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 63,461 -17,502 -21.62 1,556 -21.89 0.0011
2015-02-17 2014-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 80,963 80,963 1,992 0.0014
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.