374water Inc.: which funds bought and sold
Institutions that bought and sold 374water 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, 14 institutions that filed 13F reports for both quarters added to or opened positions in 374water, and 15 cut or closed them. Together they added a net 43K shares, +2.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 14K shares (+17.8%); index fund managers were net buyers of 48K shares (+7.7%). 6 opened a new position and 9 sold out entirely.
Bought, Q2 2026 14 institutions, 6 of them new holders Sold, Q2 2026 15 institutions, 9 of them sold out
Net change, all compared +43K shares (+2.5%)
Net change, active managers +14K shares (+17.8%), 2 bought, 1 sold
Buyers versus sellers
14 bought 24 15 sold
Active managers and hedge funds 2 bought · 1 sold · +14K
Index fund managers 2 bought · 2 sold · +48K
Other institutions 10 bought · 12 sold · −19K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | +40K +50.7% | 120K | $227,086 |
| Vanguard Fiduciary Trust Co Index funds | +22K +44.7% | 70K | $133,198 |
| Raymond James Financial Inc | +19K +49.7% | 58K | $111,013 |
| Citadel Advisors LLC Hedge fund | +15K New position | 15K | $27,979 |
| Qube Research & Technologies Ltd Hedge fund | +14K New position | 14K | $27,124 |
| Xtx Topco Ltd | +13K New position | 13K | $24,668 |
| D.A. Davidson & Co. | +13K +9.4% | 148K | $281,540 |
| UBS Group AG | +4,240 +12.5% | 38K | $72,359 |
| Sigma Planning Corp | +3,200 +6.1% | 56K | $105,551 |
| Royal Bank Of Canada | +2,231 +134.2% | 3,893 | $7,000 |
| Mariner, LLC | +1,000 +5.5% | 19K | $36,243 |
| Barclays PLC | +142 New position | 142 | $270 |
| Wells Fargo & Company | +125 New position | 125 | $238 |
| Caitong International Asset Management Co., Ltd | +3 New position | 3 | $6 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Citadel Advisors LLC Hedge fund | +15K New position | 15K | $27,979 |
| Qube Research & Technologies Ltd Hedge fund | +14K New position | 14K | $27,124 |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Millennium Management LLC Hedge fund | −15K −23.9% | 48K | $92,072 |
| Patron Partners, LLC | −15K Sold out | 0 | — |
| Susquehanna International Group, LLP | −14K −38.0% | 23K | $43,616 |
| Osaic Holdings, Inc. | −13K −20.5% | 50K | $95,670 |
| Tfo Wealth Partners, LLC | −12K Sold out | 0 | — |
| Geode Capital Management, LLC Index funds | −12K −9.7% | 108K | $204,824 |
| National Bank Of Canada | −11K Sold out | 0 | — |
| Matrix Asset Advisors Inc | −10K Sold out | 0 | — |
| Northern Trust Corp Index funds | −2,263 −8.0% | 26K | $49,252 |
| Wealth Preservation Advisors, LLC | −250 Sold out | 0 | — |
| Quadrant Capital Group LLC | −210 Sold out | 0 | — |
| Tower Research Capital LLC (TRC) | −74 −5.7% | 1,229 | $2,335 |
| First Pacific Financial | −30 Sold out | 0 | — |
| Optiver Holding B.V. | −2 Sold out | 0 | — |
| Citigroup Inc | −1 Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Millennium Management LLC Hedge fund | −15K −23.9% | 48K | $92,072 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Citadel Advisors LLCHedge fund | 15K | $27,979 |
| Qube Research & Technologies LtdHedge fund | 14K | $27,124 |
| Xtx Topco Ltd | 13K | $24,668 |
| Barclays PLC | 142 | $270 |
| Wells Fargo & Company | 125 | $238 |
| Caitong International Asset Management Co., Ltd | 3 | $6 |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Patron Partners, LLC | 15K | $42,600 |
| Tfo Wealth Partners, LLC | 12K | $33,680 |
| National Bank Of Canada | 11K | $30,530 |
| Matrix Asset Advisors Inc | 10K | $28,400 |
| Wealth Preservation Advisors, LLC | 250 | $710 |
| Quadrant Capital Group LLC | 210 | $597 |
| First Pacific Financial | 30 | $86 |
| Optiver Holding B.V. | 2 | $6 |
| Citigroup Inc | 1 | $3 |
Who holds the shares
- Institutions reporting
- 44
- Ten largest holders
- 76.1% of 13F-reported shares
- Index fund managers
- 37.5% of 13F-reported shares
- Active managers and hedge funds
- 5.1% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 2 | 1 | 2 | 0 | +14K | +17.8% |
| Index fund managers | 2 | 2 | 0 | 0 | +48K | +7.7% |
| Other institutions | 10 | 12 | 4 | 9 | −19K | −1.8% |