H2O America
US ˙ NasdaqGS ˙ US7843051043

SecurityHTO / H2O America
InstitutionCenterBook Partners LP
Latest Disclosed Ownership19,373 shares
Latest Disclosed Value $ 1,136,614
CenterBook Partners LP reports 33.14% decrease in ownership of HTO / H2O America

On May 5, 2026 - CenterBook Partners LP filed a 13F-HR form disclosing ownership of 19,373 shares of H2O America (US:HTO) valued at $1,136,614 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 28,976 shares of H2O America. This represents a change in shares of -33.14% during the quarter. The current value of the position is $1,112,591 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)
2026-05-05 2026-03-31 13F H2O AMERICA COM 784305104 19,373 -9,603 -33.14 1,137 -19.94 0.0611
2026-02-11 2025-12-31 13F H2O AMERICA COM 784305104 28,976 1,420
2025-11-07 2025-09-30 13F H2O AMERICA COM 784305104 48,020 889 1.89 2,339 -4.53 0.1156
2025-08-12 2025-06-30 13F H2O AMERICA COM 784305104 47,131 5,769 13.95 2,449 8.27 0.1361
2025-05-09 2025-03-31 13F SJW GROUP COM 784305104 41,362 23,198 127.71 2,262 153.02 0.1441
2025-02-13 2024-12-31 13F SJW GROUP COM 784305104 18,164 3,674 25.36 894 6.18 0.0534
2024-11-14 2024-09-30 13F SJW GROUP COM 784305104 14,490 -1,932 -11.76 842 -5.39 0.0518
2024-08-12 2024-06-30 13F SJW GROUP COM 784305104 16,422 -17,823 -52.05 890 -54.05 0.0553
2024-05-10 2024-03-31 13F SJW GROUP COM 784305104 34,245 20,169 143.29 1,938 110.77 0.1338
2024-02-13 2023-12-31 13F SJW GROUP COM 784305104 14,076 2,082 17.36 920 27.64 0.1122
2023-11-13 2023-09-30 13F SJW GROUP COM 784305104 11,994 11,994 721 0.0899
2023-02-13 2022-12-31 13F SJW GROUP COM 784305104 0 -20,726 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SJW GROUP COM 784305104 20,726 11,796 132.09 1,194 114.36 0.2303
2022-08-15 2022-06-30 13F SJW GROUP COM 784305104 8,930 2,626 41.66 557 26.88 0.1193
2022-05-16 2022-03-31 13F SJW GROUP COM 784305104 6,304 1,401 28.57 439 22.28 0.1563
2022-02-11 2021-12-31 13F SJW GROUP COM 784305104 4,903 4,903 359 0.2108
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.