CALIFORNIA WATER SERVICE GRP (CWT) Stock Institutional Trading Activity


CALIFORNIA WATER SERVICE GRP (CWT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-189,216111,900$4,848,627
Q3 2025Renaissance Technologies LLCBuy20,116301,116$13,818,213
Q2 2025Renaissance Technologies LLCBuy75,600281,000$12,779,880
Q1 2025Renaissance Technologies LLCBuy159,408205,400$9,953,684
Q4 2024Renaissance Technologies LLCSell-63,40845,992$2,084,817
Q2 2024Renaissance Technologies LLCSell-36,500109,400$5,304,806
Q1 2024Renaissance Technologies LLCBuy104,850145,900$6,781
Q4 2023Renaissance Technologies LLCSell-2,75041,050$2,129
Q3 2023Renaissance Technologies LLCBuy27,88643,800$2,072
Q2 2023Renaissance Technologies LLCSell-61,38615,914$822
Q1 2023Renaissance Technologies LLCBuy40,20077,300$4,499
Q4 2022Renaissance Technologies LLCSell-33,30037,100$2,250
Q3 2022Renaissance Technologies LLCBuy10070,400$3,709
Q1 2022Renaissance Technologies LLCSell-33,10070,300$4,167
Q4 2021Renaissance Technologies LLCBuy56,100103,400$7,430
Q3 2021Renaissance Technologies LLCBuy37,40047,300$2,787
Q4 2020Renaissance Technologies LLCSell-174,2009,900$535
Q3 2020Renaissance Technologies LLCBuy78,700184,100$7,999
Q2 2020Renaissance Technologies LLCSell-54,252105,400$5,028
Q1 2020Renaissance Technologies LLCSell-64,248159,652$8,034
Q4 2019Renaissance Technologies LLCBuy98,300223,900$11,544
Q3 2019Renaissance Technologies LLCBuy48,700125,600$6,648
Q2 2019Renaissance Technologies LLCBuy45,30076,900$3,893
Q1 2019Renaissance Technologies LLCBuy3,20031,600$1,715
Q4 2018Renaissance Technologies LLCSell-23,82228,400$1,354
Q1 2018Renaissance Technologies LLCBuy40,02252,222$1,945
Q4 2016Renaissance Technologies LLCSell-21,80012,200$414
Q3 2016Renaissance Technologies LLCSell-190,00034,000$1,091
Q2 2016Renaissance Technologies LLCSell-245,500224,000$7,824
Q1 2016Renaissance Technologies LLCSell-23,800469,500$12,545

Frequently asked questions about CWT activity

  • Which institutional owners are buying CWT?

    Institutional owners buying CWT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CWT activity?

    "Buy" means an investor increased their reported position in CWT compared to the prior reporting period. This reflects growing exposure to CALIFORNIA WATER SERVICE GRP (CWT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CWT increasing?

    Institutional interest in CWT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.