Company · Ownership research

CALIFORNIA WATER SERVICE GROUP CWT

CIK 0001035201 · CUSIP 130788102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 130788102 (CWT), not CUSIP 130788902 (CWT), and does not merge CUSIPs.

This page lists the top 20 of 325 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$565.30M 10,426,012 shares	0.01%	—	SEC filing ↗ Nov 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$398.86M 7,356,414 shares	0.01%	+210.68K(+2.90%)Added	SEC filing ↗ Nov 13, 2024	▾
03	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$180.09M 3,321,384 shares	0.11%	+181.72K(+5.80%)Added	SEC filing ↗ Nov 14, 2024	▾
04	STATE STREET CORP CIK 93751 · View history	$165.66M 3,055,258 shares	0.01%	-73.93K(-2.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
05	Amundi CIK 1330387 · View history	$116.72M 2,171,564 shares	0.04%	+312.94K(+16.80%)Added	SEC filing ↗ Nov 13, 2024	▾
06	NUANCE INVESTMENTS, LLC CIK 1473182 · View history	$88.58M 1,633,693 shares	2.98%	-1.04M(-38.90%)Reduced	SEC filing ↗ Nov 8, 2024	▾
07	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$87.31M 1,610,319 shares	0.08%	-74.35K(-4.40%)Reduced	SEC filing ↗ Nov 13, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$72.56M 1,337,966 shares	0.01%	+24.27K(+1.80%)Added	SEC filing ↗ Nov 12, 2024	▾
09	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$69.10M 1,274,505 shares	0.02%	-14.23K(-1.10%)Reduced	SEC filing ↗ Nov 7, 2024	▾
10	MORGAN STANLEY CIK 895421 · Amended · View history	$48.01M 885,415 shares	0.00%	+179.28K(+25.40%)Added	SEC filing ↗ May 14, 2025	▾
11	Invesco Ltd. CIK 914208 · View history	$47.66M 879,041 shares	0.01%	-112.35K(-11.30%)Reduced	SEC filing ↗ Nov 12, 2024	▾
12	NORTHERN TRUST CORP CIK 73124 · View history	$46.93M 865,516 shares	0.01%	-84.52K(-8.90%)Reduced	SEC filing ↗ Nov 13, 2024	▾
13	KBC Group NV CIK 1411133 · View history	$38.95M 718,309 shares	0.12%	0(0.00%)Unchanged	SEC filing ↗ Nov 6, 2024	▾
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$38.55M 710,958 shares	0.01%	+48.05K(+7.20%)Added	SEC filing ↗ Nov 12, 2024	▾
15	CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC CIK 1033984 · View history	$33.20M 612,264 shares	0.53%	+132.82K(+27.70%)Added	SEC filing ↗ Nov 14, 2024	▾
16	NORGES BANK CIK 1374170 · Amended · View history	$30.56M 563,544 shares	0.00%	-37.20K(-6.20%)Reduced	SEC filing ↗ Nov 13, 2024	▾
17	Legal & General Group Plc CIK 764068 · Amended · View history	$30.44M 561,371 shares	0.01%	-44.58K(-7.40%)Reduced	SEC filing ↗ Feb 28, 2025	▾
18	Bank of New York Mellon Corp CIK 1390777 · View history	$28.37M 523,217 shares	0.01%	-49.13K(-8.60%)Reduced	SEC filing ↗ Nov 12, 2024	▾
19	Triodos Investment Management BV CIK 1748729 · View history	$24.29M 448,000 shares	1.92%	0(0.00%)Unchanged	SEC filing ↗ Nov 12, 2024	▾
20	CITADEL ADVISORS LLC CIK 1423053 · View history	$20.27M 373,786 shares	0.02%	+373.79KNew	SEC filing ↗ Nov 14, 2024	▾

Showing 20 / 325 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

325

Cancelled or null records excluded

Disclosed shares

48,471,348

Not deduplicated across managers

Disclosed value

$2.63B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

CALIFORNIA WATER SERVICE GROUP · Q3 2024

Explore all 325 reporting institutions.

This page includes 20 of 325 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 325 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"130788102","quarter":"2024Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.