California Water Service Group
DE ˙ DB ˙ US1307881029
37,40 € ↓ -1,00 (-2,60%)
2026-06-02
AKTIENPREIS
SecurityDE:WT5 / California Water Service Group
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership61,281 shares
Latest Disclosed Value $ 2,778,481
Millennium Management Llc reports 32.03% decrease in ownership of WT5 / California Water Service Group

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 61,281 shares of California Water Service Group (DE:WT5) valued at $2,451,240 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 90,157 shares of California Water Service Group. This represents a change in shares of -32.03% during the quarter. The current value of the position is $2,291,909 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 61,281 -28,876 -32.03 2,778 -28.88 0.0012
2026-02-17 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 90,157 -277,917 -75.51 3,907 -76.87 0.0016
2025-11-14 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 368,074 361,339 5,365.09 16,891 5,419.61 0.0072
2025-08-14 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 6,735 6,735 306 0.0001
2025-05-15 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -68,850 -100.00 0 -100.00
2025-02-14 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 68,850 -84,544 -55.12 3,121 -62.49 0.0015
2024-11-14 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 153,394 96,451 169.38 8,317 201.23 0.0039
2024-08-14 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 56,943 56,943 2,761 0.0013
2024-05-15 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -39,575 -100.00 0 -100.00
2024-02-14 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 39,575 5,936 17.65 2,053 28.98 0.0009
2023-11-14 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 33,639 -299,873 -89.91 1,591 -90.76 0.0008
2023-08-14 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 333,512 279,129 513.27 17,219 444.04 0.0085
2023-05-15 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 54,383 -75,581 -58.16 3,165 -59.84 0.0018
2023-02-14 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 129,964 110,136 555.46 7,881 654.16 0.0044
2022-11-14 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 19,828 9,618 94.20 1,045 84.30 0.0006
2022-08-15 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 10,210 -168,826 -94.30 567 -94.66 0.0004
2022-05-16 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 179,036 179,036 10,613 0.0056
2022-02-14 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -7,826 -100.00 0 -100.00
2021-11-15 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 7,826 7,826 461 0.0003
2021-08-16 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -40,966 -100.00 0 -100.00
2021-05-17 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 40,966 40,966 2,308 0.0017
2021-02-16 2020-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -28,316 -100.00 0 -100.00
2020-11-16 2020-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 28,316 -58,143 -67.25 1,230 -70.17 0.0015
2020-08-14 2020-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 86,459 -9,395 -9.80 4,124 -14.49 0.0057
2020-05-14 2020-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 95,854 36,291 60.93 4,823 57.05 0.0108
2020-02-14 2019-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 59,563 41,580 231.22 3,071 222.92 0.0038
2019-11-14 2019-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 17,983 -67,560 -78.98 951 -78.04 0.0015
2019-08-15 2019-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 85,543 85,543 4,331 0.0065
2019-08-14 2019-06-30 13F SYKES ENTERPRISES COM 130788102 9,084 9,084 249
2019-05-14 2019-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -104,530 -100.00 0 -100.00
2019-02-15 2018-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 104,530 104,530 4,982 0.0078
2019-02-14 2018-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 104,530 4,982
2018-08-14 2018-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -563,256 -100.00 0 -100.00
2018-05-15 2018-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 563,256 275,788 95.94 20,981 60.93 0.0280
2018-02-14 2017-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 287,468 287,468 13,037 0.0180
2017-11-14 2017-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -5,748 -100.00 0 -100.00
2017-08-14 2017-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 5,748 -87,745 -93.85 212 -93.68 0.0004
2017-05-15 2017-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 93,493 76,006 434.64 3,352 465.26 0.0061
2017-02-14 2016-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 17,487 17,487 0.00 593 0.0012
2016-05-16 2016-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -88,073 -100.00 0 -100.00
2016-02-16 2015-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 88,073 -170,044 -65.88 2,049 -64.12 0.0043
2015-11-16 2015-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 258,117 -38,298 -12.92 5,710 -15.69 0.0111
2015-08-14 2015-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 296,415 -74,308 -20.04 6,773 -25.46 0.0128
2015-05-15 2015-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 370,723 21,900 6.28 9,086 5.84 0.0169
2015-02-17 2014-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 348,823 317,199 1,003.03 8,585 1,109.15 0.0182
2014-11-14 2014-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 31,624 31,624 0.00 710 0.0018
2014-08-14 2014-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 0 -63,288 -100.00 0 -100.00
2014-05-15 2014-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 63,288 -13,224 -17.28 1,515 -14.16 0.0044
2014-02-14 2013-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 76,512 53,638 234.49 1,765 279.57 0.0056
2013-11-14 2013-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 22,874 -22,862 -49.99 465 -47.87 0.0015
2013-08-14 2013-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 45,736 45,736 892 0.0027
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.