Renaissance Technologies’s California Water Service CWT Stock Holding History

Renaissance Technologies’s Portfolio CWT Stock Details CWT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$4.55M	Sell	100,400 -11,500	-10%	-$516K	0.01%	1431
2025 Q4	$4.85M	Sell	111,900 -189,216	-63%	-$8.63M	0.01%	1327
2025 Q3	$13.8M	Buy	301,116 +20,116	+7%	+$926K	0.02%	914
2025 Q2	$12.8M	Buy	281,000 +75,600	+37%	+$3.62M	0.02%	924
2025 Q1	$9.95M	Buy	205,400 +159,408	+347%	+$7.24M	0.02%	1009
2024 Q4	$2.08M	Buy	+45,992	New	+$2.32M	﹤0.01%	2025
2024 Q3	–	Sell	-109,400	Closed	-$5.3M	–	3588
2024 Q2	$5.3M	Sell	109,400 -36,500	-25%	-$1.77M	0.01%	1258
2024 Q1	$6.78M	Buy	145,900 +104,850	+255%	+$4.91M	0.01%	1219
2023 Q4	$2.13M	Sell	41,050 -2,750	-6%	-$138K	﹤0.01%	1912
2023 Q3	$2.07M	Buy	43,800 +27,886	+175%	+$1.41M	﹤0.01%	1836
2023 Q2	$822K	Sell	15,914 -61,386	-79%	-$3.45M	﹤0.01%	2585
2023 Q1	$4.5M	Buy	77,300 +40,200	+108%	+$2.39M	0.01%	1534
2022 Q4	$2.25M	Sell	37,100 -33,300	-47%	-$2M	﹤0.01%	2003
2022 Q3	$3.71M	Buy	+70,400	New	+$4.13M	0.01%	1625
2022 Q2	–	Sell	-70,300	Closed	-$4.17M	–	4278
2022 Q1	$4.17M	Sell	70,300 -33,100	-32%	-$1.99M	﹤0.01%	1729
2021 Q4	$7.43M	Buy	103,400 +56,100	+119%	+$3.61M	0.01%	1237
2021 Q3	$2.79M	Buy	+47,300	New	+$2.91M	﹤0.01%	1846
2021 Q1	–	Sell	-9,900	Closed	-$535K	–	3378
2020 Q4	$535K	Sell	9,900 -174,200	-95%	-$8.58M	﹤0.01%	2796
2020 Q3	$8M	Buy	184,100 +78,700	+75%	+$3.66M	0.01%	1291
2020 Q2	$5.03M	Sell	105,400 -54,252	-34%	-$2.56M	﹤0.01%	1648
2020 Q1	$8.03M	Sell	159,652 -64,248	-29%	-$3.33M	0.01%	1296
2019 Q4	$11.5M	Buy	223,900 +98,300	+78%	+$5.13M	0.01%	1355
2019 Q3	$6.65M	Buy	125,600 +48,700	+63%	+$2.61M	0.01%	1644
2019 Q2	$3.89M	Buy	76,900 +45,300	+143%	+$2.28M	﹤0.01%	1956
2019 Q1	$1.72M	Buy	31,600 +3,200	+11%	+$161K	﹤0.01%	2388
2018 Q4	$1.35M	Buy	+28,400	New	+$1.26M	﹤0.01%	2435
2018 Q2	–	Sell	-52,222	Closed	-$1.95M	–	3302
2018 Q1	$1.95M	Buy	+52,222	New	+$2.08M	﹤0.01%	2343
2017 Q1	–	Sell	-12,200	Closed	-$414K	–	3252
2016 Q4	$414K	Sell	12,200 -21,800	-64%	-$722K	﹤0.01%	2823
2016 Q3	$1.09M	Sell	34,000 -190,000	-85%	-$6.13M	﹤0.01%	2526
2016 Q2	$7.82M	Sell	224,000 -245,500	-52%	-$7.2M	0.01%	1303
2016 Q1	$12.5M	Sell	469,500 -23,800	-5%	-$592K	0.02%	976
2015 Q4	$11.5M	Buy	493,300 +92,902	+23%	+$2.11M	0.03%	894
2015 Q3	$8.86M	Buy	400,398 +105,178	+36%	+$2.3M	0.02%	1009
2015 Q2	$6.75M	Sell	295,220 -5,680	-2%	-$136K	0.02%	1226
2015 Q1	$7.38M	Buy	300,900 +141,200	+88%	+$3.49M	0.02%	1124
2014 Q4	$3.93M	Buy	159,700 +140,500	+732%	+$3.44M	0.01%	1415
2014 Q3	$431K	Sell	19,200 -37,100	-66%	-$873K	﹤0.01%	2364
2014 Q2	$1.36M	Sell	56,300 -178,000	-76%	-$4.01M	﹤0.01%	1921
2014 Q1	$5.61M	Buy	234,300 +108,900	+87%	+$2.5M	0.01%	1189
2013 Q4	$2.89M	Buy	125,400 +94,452	+305%	+$2.05M	0.01%	1537
2013 Q3	$629K	Sell	30,948 -41,852	-57%	-$861K	﹤0.01%	2217
2013 Q2	$1.42M	Buy	+72,800	New	+$1.44M	﹤0.01%	1772

Other funds holding CWT

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Amundi Paris, France $367B AUM 31.23% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Nuance Investments Kansas City, Missouri $717M AUM 3.8% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Renaissance Technologies's CWT Position: Q1 2026 in Review

Renaissance Technologies reduced its California Water Service (CWT) stake by 10% in Q1 2026, selling an estimated $516K and leaving 100,400 shares worth $4.55M. The position accounts for 0.01% of the portfolio, ranked #1431.

Renaissance Technologies first reported a position in CWT in Q2 2013 and has held it in 42 quarters since. The position peaked at $13.8M in Q3 2025. 337 funds tracked by Wall St. Rank hold CWT as of Q1 2026.

Renaissance Technologies held 100,400 shares of California Water Service worth $4.55M as of Q1 2026.
Renaissance Technologies sold 11,500 California Water Service shares in Q1 2026, an estimated $516K.
California Water Service made up 0.01% of Renaissance Technologies's portfolio in Q1 2026, its #1431 holding.
Renaissance Technologies first reported a position in California Water Service in Q2 2013 and has held it in 42 quarters since.
Renaissance Technologies's California Water Service position peaked at $13.8M in Q3 2025.
337 funds tracked by Wall St. Rank held California Water Service as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.