H2O America
DE ˙ DB ˙ US7843051043
SecurityDE:76W / H2O America
InstitutionJane Street Group, Llc
Latest Disclosed Ownership103,942 shares
Latest Disclosed Value $ 6,098,278
Jane Street Group, Llc ownership in 76W / H2O America

On May 12, 2026 - Jane Street Group, Llc filed a 13F-HR form disclosing ownership of 103,942 shares of H2O America (DE:76W) valued at $6,098,278 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 29,026 shares of H2O America. This represents a change in shares of 258.10% during the quarter.

Jane Street Group, Llc has a history of taking positions in derivatives of the underlying security (76W) in the form of stock options. The firm currently holds call options representing 4,500 of underlying shares valued at $264,015 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:76W / H2O America Historical Put/Call Ratio
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)
2026-05-12 2026-03-31 13F H2O AMERICA COM 784305104 103,942 74,916 258.10 6,098 329.13 0.0004
2026-02-12 2025-12-31 13F H2O AMERICA COM 784305104 29,026 -7,476 -20.48 1,422 -20.03 0.0002
2025-11-14 2025-09-30 13F H2O AMERICA COM 784305104 36,502 -11,827 -24.47 1,778 -29.23 0.0003
2025-08-14 2025-06-30 13F H2O AMERICA COM 784305104 48,329 -8,372 -14.77 2,512 -19.00 0.0005
2025-05-19 2025-03-31 13F/A-1 SJW GROUP COM 784305104 56,701 56,701 3,101 0.0008
2025-05-14 2025-03-31 13F SJW GROUP COM 784305104 56,701 56,701 3,101 0.0006
2025-02-14 2024-12-31 13F SJW GROUP COM 784305104 0 -27,174 -100.00 0 -100.00
2024-11-15 2024-09-30 13F SJW GROUP COM 784305104 27,174 -2,410 -8.15 1,579 -1.56 0.0003
2024-08-15 2024-06-30 13F SJW GROUP COM 784305104 29,584 22,995 348.99 1,604 331.18 0.0004
2024-05-16 2024-03-31 13F SJW GROUP COM 784305104 6,589 -28,669 -81.31 373 -83.85 0.0001
2024-02-15 2023-12-31 13F SJW GROUP COM 784305104 35,258 35,258 2,304 0.0006
2023-08-14 2023-06-30 13F SJW GROUP COM 784305104 0 -5,302 -100.00 0 -100.00
2023-05-16 2023-03-31 13F SJW GROUP COM 784305104 5,302 -231,626 -97.76 404 -97.90 0.0002
2023-02-15 2022-12-31 13F SJW GROUP COM 784305104 236,928 203,573 610.32 19,236 901.35 0.0089
2022-11-15 2022-09-30 13F SJW GROUP COM 784305104 33,355 29,140 691.34 1,921 630.42 0.0008
2022-08-16 2022-06-30 13F SJW GROUP COM 784305104 4,215 -6,687 -61.34 263 -65.35 0.0001
2022-05-17 2022-03-31 13F SJW GROUP COM 784305104 10,902 10,902 759 0.0002
2020-08-17 2020-06-30 13F SJW GROUP COM 784305104 0 -5,319 -100.00 0 -100.00
2020-05-15 2020-03-31 13F SJW GROUP COM 784305104 5,319 5,319 307 0.0003
2020-02-14 2019-12-31 13F SJW GROUP COM 784305104 0 -9,560 -100.00 0 -100.00
2019-11-14 2019-09-30 13F SJW GROUP COM 784305104 9,560 9,560 653 0.0011
2019-05-15 2019-03-31 13F SJW GROUP COM 784305104 0 -7,535 -100.00 0 -100.00
2019-02-14 2018-12-31 13F SJW GROUP COM 784305104 7,535 7,535 419 0.0009
2017-05-15 2017-03-31 13F SJW GROUP COM 784305104 0 -5,900 -100.00 0 -100.00
2017-02-15 2016-12-31 13F SJW GROUP COM 784305104 5,900 5,900 330 0.0014
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-12 2026-03-31 13F H2O AMERICA COM Call 4,500 -25.00 264 -9.90 n/a n/a n/a
2026-02-12 2025-12-31 13F H2O AMERICA COM Call 6,000 294 n/a n/a n/a
2025-11-14 2025-09-30 13F H2O AMERICA COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F H2O AMERICA COM Call 37,500 1,949 n/a n/a n/a
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.