SJW · Insider trading · 13F holders · Congress trades
H2o America (SJW)
Who is buying and selling SJW: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 13
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
SJW at a glance
- No open-market insider purchases or sales of SJW were filed in the last 90 days.
- 13 13F filers hold SJW among their 50 largest positions, worth $612.6M combined, including George Soros. The biggest bets by portfolio weight are ATLAS Infrastructure Partners (UK) Ltd. (8.5%), Ausbil Investment Management Ltd (5.3%) and Vennlight Capital Management, LP (5.2%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in SJW.
SJW insider trading
No open-market insider purchases or sales of SJW were filed in the last 90 days.
Who owns SJW? Hedge funds and superinvestors
13 13F filers hold SJW among their 50 largest positions, worth $612.6M combined, including George Soros. The biggest bets by portfolio weight are ATLAS Infrastructure Partners (UK) Ltd. (8.5%), Ausbil Investment Management Ltd (5.3%) and Vennlight Capital Management, LP (5.2%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Superinvestors holding SJW: George Soros 1.3%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| ATLAS Infrastructure Partners (UK) Ltd.Hedge fund | 8.5% | $280.3M | 4,612,035 | +1.8% shares | Q2 2026 |
| ANTIPODES PARTNERS LtdAsset manager | 2.0% | $106.9M | 1,759,602 | -21.8% shares | Q2 2026 |
| George SorosAsset manager | 1.3% | $76.2M | 1,254,368 | +2.1% shares | Q2 2026 |
| Yaupon Capital Management LPHedge fund | 1.7% | $51.8M | 851,846 | -4.9% shares | Q2 2026 |
| Resolution Capital LtdHedge fund | 0.6% | $31.3M | 515,795 | +6.9% shares | Q2 2026 |
| Zimmer Partners, LPHedge fund | 0.7% | $31.2M | 513,500 | -48.7% shares | Q2 2026 |
| Ausbil Investment Management LtdHedge fund | 5.3% | $10.5M | 169,944 | -16.3% shares | Q3 2026 |
| Nuance Investments, LLCAsset manager | 1.6% | $9.4M | 154,446 | -60.6% shares | Q2 2026 |
| Vennlight Capital Management, LPHedge fund | 5.2% | $7.8M | 128,839 | -20.6% shares | Q2 2026 |
| Keynote Financial Services LLCWealth manager | 1.5% | $3.3M | 53,661 | -2.5% shares | Q2 2026 |
| Bridgefront Capital, LLCHedge fund | 0.5% | $1.9M | 30,464 | — | Q2 2026 |
| Everstar Asset Management, LLCWealth manager | 0.6% | $1.2M | 20,061 | -1.5% shares | Q2 2026 |
| Rubicon Advisors, GPWealth manager | 0.6% | $875K | 14,194 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 11). Screen SJW in the grand portfolio →
SJW stock trades by members of Congress
No member of Congress has disclosed a trade in SJW.
SJW questions and answers
Are insiders buying SJW stock?
No open-market insider purchases or sales of SJW were filed in the last 90 days.
Which hedge funds own SJW?
13 13F filers hold SJW among their 50 largest positions, worth $612.6M combined, including George Soros. The biggest bets by portfolio weight are ATLAS Infrastructure Partners (UK) Ltd. (8.5%), Ausbil Investment Management Ltd (5.3%) and Vennlight Capital Management, LP (5.2%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded SJW?
No member of Congress has disclosed a trade in SJW.
Who is the largest holder of SJW?
Among 13F filers, ATLAS Infrastructure Partners (UK) Ltd. reports the largest SJW position, $280.3M (4,612,035 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is ATLAS Infrastructure Partners (UK) Ltd.'s: 8.5% of its portfolio.
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