캘리포니아 수도 서비스 그룹
DE ˙ DB ˙ US1307881029
€38.20 ↓ -0.60 (-1.55%)
2026-06-04
주가
SecurityDE:WT5 / California Water Service Group
InstitutionMorgan Stanley
Latest Disclosed Ownership1,118,705 shares
Latest Disclosed Value $ 50,722,161
Morgan Stanley reports 45.85% increase in ownership of WT5 / California Water Service Group

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 1,118,705 shares of California Water Service Group (DE:WT5) valued at $44,748,200 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 767,034 shares of California Water Service Group. This represents a change in shares of 45.85% during the quarter. The current value of the position is $42,734,531 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 1,118,705 351,671 45.85 50,722 52.62 0.0031
2026-05-27 2025-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 767,034 -35,091 -4.37 33,236 -9.71 0.0020
2026-02-13 2025-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 767,034 -35,091 33,236 0.0020
2026-05-27 2025-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 802,125 -57,371 -6.67 36,810 -5.83 0.0022
2025-11-14 2025-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 802,125 -57,371 36,810 0.0022
2025-08-15 2025-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 859,496 -85,852 -9.08 39,090 -14.67 0.0025
2025-05-15 2025-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 945,348 151,650 19.11 45,812 27.33 0.0033
2025-05-15 2024-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 793,698 -91,717 -10.36 35,978 -25.06 0.0025
2025-02-14 2024-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 793,698 -91,717 35,978 0.0025
2025-05-14 2024-09-30 13F/A-2 CALIFORNIA WTR SVC GROUP COM 130788102 885,415 179,283 25.39 48,007 40.21 0.0035
2025-02-14 2024-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 885,415 179,283 48,007 0.0035
2024-11-14 2024-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 885,415 179,283 48,007 0.0004
2025-05-14 2024-06-30 13F/A-2 CALIFORNIA WTR SVC GROUP COM 130788102 706,132 -27,089 -3.69 34,240 0.47 0.0026
2024-10-17 2024-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 706,132 -27,089 34,240 0.0026
2024-08-14 2024-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 706,132 -27,089 34,240 0.0026
2024-10-17 2024-03-31 13F/A-2 CALIFORNIA WTR SVC GROUP COM 130788102 733,221 -7,724 -1.04 34,080 -11.32 0.0027
2024-08-16 2024-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 733,221 -7,724 34,080 0.0003
2024-05-15 2024-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 733,221 -7,724 34,080 0.0027
2024-08-16 2023-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 740,945 14,500 2.00 38,433 11.82 0.0034
2024-02-13 2023-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 740,945 14,500 38,433 0.0034
2023-11-15 2023-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 726,445 39,879 5.81 34,368 -3.04 0.0035
2023-08-14 2023-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 686,566 21,929 3.30 35,447 -8.36 0.0035
2023-05-15 2023-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 664,637 20,830 3.24 38,682 -0.92 0.0041
2023-02-14 2022-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 643,807 111,494 20.95 39,041 39.19 0.0044
2022-11-14 2022-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 532,313 36,789 7.42 28,048 1.90 0.0038
2022-10-27 2022-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 495,524 -27,032 -5.17 27,526 -11.14 0.0036
2022-08-15 2022-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 495,524 -27,032 27,526 0.0007
2022-10-27 2022-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 522,556 130,684 33.35 30,978 10.01 0.0042
2022-05-13 2022-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 522,556 130,684 30,978 0.0042
2022-02-14 2021-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 391,872 -1,503 -0.38 28,159 21.47 0.0035
2021-11-15 2021-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 393,375 -13,537 -3.33 23,181 2.57 0.0031
2021-08-23 2021-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 406,912 91,577 29.04 22,600 27.22 0.0030
2021-08-16 2021-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 406,912 91,577 22,600 0.0006
2021-05-17 2021-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 315,335 22,621 7.73 17,765 12.32 0.0026
2021-02-16 2020-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 292,714 4,136 1.43 15,816 26.14 0.0024
2020-11-13 2020-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 288,578 430 0.15 12,538 -8.77 0.0024
2020-08-14 2020-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 288,148 11,090 4.00 13,744 -1.42 0.0030
2020-05-26 2020-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 277,058 -421,470 -60.34 13,942 -61.29 0.0038
2020-05-15 2020-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 277,058 -421,470 13,942 1,071.0362
2020-02-14 2019-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 698,528 378,583 118.33 36,016 112.68 0.0084
2019-11-14 2019-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 319,945 -164,668 -33.98 16,934 -30.98 0.0045
2019-08-14 2019-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 484,613 215,343 79.97 24,536 67.86 0.0065
2019-05-15 2019-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 269,270 10,708 4.14 14,617 18.61 0.0041
2019-02-14 2018-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 258,562 51,086 24.62 12,324 38.46 0.0037
2019-04-23 2018-09-30 13F/A-2 CALIFORNIA WTR SVC GROUP COM 130788102 207,476 -92,745 -30.89 8,901 -23.89 0.0022
2018-11-20 2018-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 207,476 0 8,901 0.0022
2018-11-14 2018-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 207,476 -92,745 8,901
2019-04-23 2018-06-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 300,221 -10,960 -3.52 11,695 0.89 0.0032
2018-08-14 2018-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 300,221 -10,960 11,695
2019-04-23 2018-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 311,181 23,401 8.13 11,592 -11.18 0.0032
2018-05-14 2018-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 311,181 23,401 11,592
2019-04-23 2017-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 287,780 56,659 24.51 13,051 47.99 0.0036
2018-02-14 2017-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 287,780 56,659 13,051
2017-11-14 2017-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 231,121 27,604 13.56 8,819 17.76 0.0026
2017-08-11 2017-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 203,517 -29,823 -12.78 7,489 -10.47 0.0023
2017-05-22 2017-03-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 233,340 -80,177 -25.57 8,365 -21.29 0.0026
2017-05-12 2017-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 233,340 8,365
2017-02-22 2016-12-31 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 313,517 108,412 52.86 10,628 61.47 0.0035
2017-02-13 2016-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 313,517 10,628
2016-11-10 2016-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 205,105 48,753 31.18 6,582 20.51 0.0022
2016-08-12 2016-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 156,352 12,830 8.94 5,462 42.46 0.0020
2016-05-12 2016-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 143,522 13,755 10.60 3,834 26.95 0.0015
2016-02-09 2015-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 129,767 -25,082 -16.20 3,020 -11.82 0.0011
2016-02-08 2015-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 154,849 -130,267 -45.69 3,425 -47.42 0.0013
2015-11-09 2015-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 154,849 3,425
2015-08-12 2015-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 285,116 101,807 55.54 6,514 44.95 0.0023
2015-05-14 2015-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 183,309 -16,732 -8.36 4,494 -8.70 0.0017
2015-02-13 2014-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 200,041 26,573 15.32 4,922 26.50 0.0018
2014-12-16 2014-09-30 13F/A-1 CALIFORNIA WTR SVC GROUP COM 130788102 173,468 27,398 18.76 3,891 10.07 0.0015
2014-11-14 2014-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 173,468 3,891
2014-08-12 2014-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 146,070 709 0.49 3,535 1.58 0.0060
2014-05-13 2014-03-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 145,361 -120,882 -45.40 3,480 -43.34 0.0015
2014-02-13 2013-12-31 13F CALIFORNIA WTR SVC GROUP COM 130788102 266,243 89,171 50.36 6,142 70.66 0.0026
2013-11-13 2013-09-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 177,072 -149,477 -45.77 3,599 -43.51 0.0017
2013-08-08 2013-06-30 13F CALIFORNIA WTR SVC GROUP COM 130788102 326,549 326,549 6,371 0.0032
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.