California Water Service Group: which funds bought and sold
Institutions that bought and sold California Water Service Group shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 181 institutions that filed 13F reports for both quarters added to or opened positions in California Water Service Group, and 140 cut or closed them. Together they added a net 4.1M shares, +8.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.6M shares (+20.6%); index fund managers were net buyers of 881K shares (+3.7%). 43 opened a new position and 42 sold out entirely.
Bought, Q2 2026 181 institutions, 43 of them new holders Sold, Q2 2026 140 institutions, 42 of them sold out
Net change, all compared +4.1M shares (+8.0%)
Net change, active managers +1.6M shares (+20.6%), 25 bought, 15 sold
Buyers versus sellers
181 bought 55 140 sold
Active managers and hedge funds 25 bought · 15 sold · +1.6M
Index fund managers 8 bought · 3 sold · +881K
Other institutions 148 bought · 122 sold · +1.6M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Atlas Infrastructure Partners (UK) Ltd. | +2.0M New position | 2.0M | $96.6M |
| Antipodes Partners Ltd Hedge fund | +753K New position | 753K | $36.7M |
| Nomura Asset Management International Inc. | +747K New position | 747K | $36.4M |
| AQR Capital Management LLC Hedge fund | +512K +301.7% | 682K | $33.2M |
| Blackrock, Inc. Index funds | +447K +4.3% | 10.8M | $523M |
| State Street Corp Index funds | +164K +5.3% | 3.3M | $159M |
| Citadel Advisors LLC Hedge fund | +162K +466.0% | 196K | $9.6M |
| Panagora Asset Management Inc Active manager | +153K New position | 153K | $7.4M |
| D. E. Shaw & Co., Inc. Hedge fund | +110K +132.5% | 193K | $9.4M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +107K +41.7% | 365K | $17.8M |
| T. Rowe Price Investment Management, Inc. Active manager | +99K +2.9% | 3.5M | $171M |
| Duff & Phelps Investment Management Co | +98K +115.2% | 183K | $8.9M |
| Gabelli Funds LLC Active manager | +98K +226.6% | 141K | $6.9M |
| Vanguard Portfolio Management LLC Index funds | +90K +2.1% | 4.4M | $213M |
| Sagefield Capital LP | +86K New position | 86K | $4.2M |
| Assenagon Asset Management S.A. | +85K New position | 85K | $4.1M |
| Geode Capital Management, LLC Index funds | +80K +5.4% | 1.6M | $75.7M |
| Triodos Investment Management Bv | +79K +19.1% | 493K | $24M |
| Northern Trust Corp Index funds | +71K +11.2% | 709K | $34.5M |
| Ieq Capital, LLC | +63K New position | 63K | $3.1M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Antipodes Partners Ltd Hedge fund | +753K New position | 753K | $36.7M |
| AQR Capital Management LLC Hedge fund | +512K +301.7% | 682K | $33.2M |
| Citadel Advisors LLC Hedge fund | +162K +466.0% | 196K | $9.6M |
| Panagora Asset Management Inc Active manager | +153K New position | 153K | $7.4M |
| D. E. Shaw & Co., Inc. Hedge fund | +110K +132.5% | 193K | $9.4M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +107K +41.7% | 365K | $17.8M |
| T. Rowe Price Investment Management, Inc. Active manager | +99K +2.9% | 3.5M | $171M |
| Gabelli Funds LLC Active manager | +98K +226.6% | 141K | $6.9M |
| Millennium Management LLC Hedge fund | +49K +80.1% | 110K | $5.4M |
| Renaissance Technologies LLC Hedge fund | +44K +43.6% | 144K | $7M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Cbre Investment Management Listed Real Assets LLC | −648K Sold out | 0 | — |
| Nuance Investments, LLC | −508K −31.7% | 1.1M | $53.3M |
| Marshall Wace, LLP Hedge fund | −257K Sold out | 0 | — |
| Qube Research & Technologies Ltd Hedge fund | −187K Sold out | 0 | — |
| Morgan Stanley | −171K −15.2% | 948K | $46.1M |
| Nuveen, LLC | −151K −35.4% | 274K | $13.4M |
| Jane Street Group, LLC | −123K Sold out | 0 | — |
| FMR LLC Active manager | −109K −7.8% | 1.3M | $62.3M |
| Goldman Sachs Group Inc | −87K −30.6% | 197K | $9.6M |
| Two Sigma Investments, LP Hedge fund | −68K −88.8% | 8,609 | $418,828 |
| First Trust Advisors LP | −54K −4.0% | 1.3M | $63.2M |
| HRT Financial LP | −43K Sold out | 0 | — |
| Squarepoint Ops LLC Hedge fund | −40K −82.6% | 8,527 | $414,839 |
| Barclays PLC | −38K −77.5% | 11K | $541,620 |
| Invesco Ltd. | −27K −2.7% | 975K | $47.4M |
| Canada Pension Plan Investment Board | −26K −78.9% | 6,900 | $335,685 |
| Voloridge Investment Management, LLC Hedge fund | −25K Sold out | 0 | — |
| Rodgers Brothers Inc. | −25K −49.9% | 25K | $1.2M |
| Campbell & Co Investment Adviser LLC | −22K Sold out | 0 | — |
| Y-Intercept (Hong Kong) Ltd | −20K Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Marshall Wace, LLP Hedge fund | −257K Sold out | 0 | — |
| Qube Research & Technologies Ltd Hedge fund | −187K Sold out | 0 | — |
| FMR LLC Active manager | −109K −7.8% | 1.3M | $62.3M |
| Two Sigma Investments, LP Hedge fund | −68K −88.8% | 8,609 | $418,828 |
| Squarepoint Ops LLC Hedge fund | −40K −82.6% | 8,527 | $414,839 |
| Voloridge Investment Management, LLC Hedge fund | −25K Sold out | 0 | — |
| American Century Companies Inc Active manager | −16K −6.2% | 245K | $11.9M |
| Centerbook Partners LP Hedge fund | −13K −61.6% | 7,978 | $388,130 |
| Brevan Howard Capital Management LP Hedge fund | −9,597 Sold out | 0 | — |
| Jacobs Levy Equity Management, Inc Active manager | −6,516 −9.8% | 60K | $2.9M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Atlas Infrastructure Partners (UK) Ltd. | 2.0M | $96.6M |
| Antipodes Partners LtdHedge fund | 753K | $36.7M |
| Nomura Asset Management International Inc. | 747K | $36.4M |
| Panagora Asset Management IncActive manager | 153K | $7.4M |
| Sagefield Capital LP | 86K | $4.2M |
| Assenagon Asset Management S.A. | 85K | $4.1M |
| Ieq Capital, LLC | 63K | $3.1M |
| Nordea Investment Management AB | 56K | $2.7M |
| Ilex Capital Partners (UK) LLP | 45K | $2.2M |
| Dockside LLC | 24K | $1.1M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Cbre Investment Management Listed Real Assets LLC | 648K | $29.4M |
| Marshall Wace, LLPHedge fund | 257K | $11.6M |
| Qube Research & Technologies LtdHedge fund | 187K | $8.5M |
| Jane Street Group, LLC | 123K | $5.6M |
| HRT Financial LP | 43K | $2M |
| Voloridge Investment Management, LLCHedge fund | 25K | $1.1M |
| Campbell & Co Investment Adviser LLC | 22K | $977,802 |
| Y-Intercept (Hong Kong) Ltd | 20K | $910,518 |
| Healthcare Of Ontario Pension Plan Trust Fund | 16K | $746,840 |
| Abacus Wealth Partners, LLC | 16K | $742,941 |
Who holds the shares
- Institutions reporting
- 342
- Ten largest holders
- 61.8% of 13F-reported shares
- Index fund managers
- 44.8% of 13F-reported shares
- Active managers and hedge funds
- 16.6% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 25 | 15 | 5 | 7 | +1.6M | +20.6% |
| Index fund managers | 8 | 3 | 0 | 0 | +881K | +3.7% |
| Other institutions | 148 | 122 | 38 | 35 | +1.6M | +8.3% |
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