123 tracked 13F filers disclose a position in MWH as of the latest SEC 13F filings, a combined $3.6B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | AMERICAN SECURITIES LLC | $2.8B | 91.8M | ▲New +91.8M sh | Q1 2026 | |
| 2 | Robeco Schweiz AG | $89.9M | 2.6M | ▲+163% Added · +1.6M sh | Q2 2026 | |
| 3 | Point72 Asset Management, L.P. | $59.3M | 2.0M | ▲New +2.0M sh | Q1 2026 | |
| 4 | MILLENNIUM MANAGEMENT LLC | $32.7M | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 5 | Encompass Capital Advisors LLC | $30.0M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $29.0M | 967K | →First observed position No prior filed position | Q1 2026 | |
| 7 | JENNISON ASSOCIATES LLC | $26.0M | 865K | ▲New +865K sh | Q1 2026 | |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | $25.1M | 835K | →First observed position No prior filed position | Q1 2026 | |
| 9 | DEUTSCHE BANK AG\ | $22.7M | 756K | ▲New +756K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $25.1M | 737K | ▲+127% Added · +412K sh | Q2 2026 | |
| 11 | Yaupon Capital Management LP | $21.8M | 725K | ▲New +725K sh | Q1 2026 | |
| 12 | Electron Capital Partners, LLC | $21.7M | 721K | ▲New +721K sh | Q1 2026 | |
| 13 | Covalis Capital LLP | $20.9M | 697K | ▲New +697K sh | Q1 2026 | |
| 14 | GOLDMAN SACHS GROUP INC | $19.9M | 662K | ▲New +662K sh | Q1 2026 | |
| 15 | BlackRock, Inc. | $19.4M | 647K | ▲New +647K sh | Q1 2026 | |
| 16 | BALYASNY ASSET MANAGEMENT L.P. | $17.9M | 597K | ▲New +597K sh | Q1 2026 | |
| 17 | FRANKLIN RESOURCES INC | $17.5M | 582K | ▲New +582K sh | Q1 2026 | |
| 18 | Wealth High Governance Asset Management Ltda. | $19.7M | 579K | ▲New +579K sh | Q2 2026 | |
| 19 | Pictet Asset Management Holding SA | $17.2M | 572K | ▲New +572K sh | Q1 2026 | |
| 20 | Walleye Capital LLC | $18.8M | 553K | ▲71× Added · +546K sh | Q2 2026 | |
| 21 | SCOPUS ASSET MANAGEMENT, L.P. | $16.2M | 539K | ▲New +539K sh | Q1 2026 | |
| 22 | NEUMEIER POMA INVESTMENT COUNSEL LLC | $18.3M | 538K | ▲New +538K sh | Q2 2026 | |
| 23 | CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT | $17.7M | 520K | ▲+160% Added · +320K sh | Q2 2026 | |
| 24 | CITADEL ADVISORS LLC | $15.5M | 515K | ▲New +515K sh | Q1 2026 | |
| 25 | Ghisallo Capital Management LLC | $17.0M | 500K | ▲+150% Added · +300K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 56 funds opened a new position in MWH and 8 added to an existing one, while 5 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 63 funds | $56.5B |
| NVIDIA CORPNVDA | 62 funds | $90.0B |
| GE VERNOVA INCGEV | 59 funds | $7.5B |
| MICROSOFT CORPMSFT | 58 funds | $56.4B |
| META PLATFORMS INC-CLASS AMETA | 58 funds | $28.1B |
| TESLA INCTSLA | 58 funds | $20.6B |
| VISTRA CORPVST | 58 funds | $2.7B |
| WILLIAMS COS INCWMB | 57 funds | $4.4B |
| APPLE INCAAPL | 56 funds | $64.2B |
| ALPHABET INC-CL AGOOGL | 56 funds | $44.0B |
| BROADCOM INCAVGO | 56 funds | $38.8B |
| MICRON TECHNOLOGY INCMU | 55 funds | $13.7B |
Ranked by how many of MWH's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 19, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 7.9M | — |
| Aug 19, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 7.9M | — |
| Aug 19, 2026 | SOLV Energy Management Holdings LP | 10% Owner | Sell (S) | 1.3M | — |
| Jun 4, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 1.2M | — |
| Jun 4, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 1.2M | — |
| Jun 1, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 7.7M | — |
| Jun 1, 2026 | AMERICAN SECURITIES LLC | 10% Owner | Sell (S) | 7.7M | — |
Connected entities for MWH
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MWH/capital-change-brief"
Use Arkolith's capital_change_brief for MWH. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MWH. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.