The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query NWN owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/NWN"
Use Arkolith to show who owns NWN, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $339.7M | 6.4M | ▼−6.3% Reduced · −427K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $220.0M | 4.7M | ▼−1.1% Reduced · −53K sh | Q4 2025 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $139.9M | 2.6M | ▲New +2.6M sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $97.5M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 5 | STATE STREET CORP | $85.4M | 1.6M | ▼−22% Reduced · −466K sh | Q1 2026 | |
| 6 | VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | $63.3M | 1.2M | ▼−15% Reduced · −203K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $54.9M | 1.0M | ▲+4.3% Added · +43K sh | Q1 2026 | |
| 8 | MORGAN STANLEY | $44.2M | 831K | ▼−9.0% Reduced · −83K sh | Q1 2026 | |
| 9 | FIRST TRUST ADVISORS LP | $40.2M | 756K | ▼−12% Reduced · −104K sh | Q1 2026 | |
| 10 | DIMENSIONAL FUND ADVISORS LP | $39.6M | 744K | ▲+2.6% Added · +19K sh | Q1 2026 | |
| 11 | GOLDMAN SACHS GROUP INC | $34.9M | 656K | ▲+12% Added · +69K sh | Q1 2026 | |
| 12 | DUFF & PHELPS INVESTMENT MANAGEMENT CO | $32.6M | 613K | ▼−28% Reduced · −244K sh | Q1 2026 | |
| 13 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $31.6M | 594K | ▲+3.3% Added · +19K sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $31.0M | 583K | ▼−2.2% Reduced · −13K sh | Q1 2026 | |
| 15 | GABELLI FUNDS LLC | $27.7M | 520K | —Held | Q1 2026 | |
| 16 | Nuveen, LLC | $26.7M | 503K | ▲+75% Added · +216K sh | Q1 2026 | |
| 17 | Bank of New York Mellon Corp | $25.4M | 476K | ▼−1.5% Reduced · −7K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $24.3M | 456K | ▲+4.1% Added · +18K sh | Q1 2026 | |
| 19 | VICTORY CAPITAL MANAGEMENT INC | $22.2M | 418K | ▲+161% Added · +258K sh | Q1 2026 | |
| 20 | MetLife Investment Management, LLC | $19.7M | 371K | ▲+0.4% Added · +2K sh | Q1 2026 | |
| 21 | GAMCO INVESTORS, INC. ET AL | $19.4M | 364K | —Held | Q1 2026 | |
| 22 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $16.6M | 312K | ▼−13% Reduced · −48K sh | Q1 2026 | |
| 23 | TWO SIGMA INVESTMENTS, LP | $14.5M | 273K | ▲+370% Added · +215K sh | Q1 2026 | |
| 24 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $14.4M | 270K | ▼−6.7% Reduced · −19K sh | Q1 2026 | |
| 25 | GLENMEDE TRUST CO NA | $14.3M | 268K | ▼−8.5% Reduced · −25K sh | Q1 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 23, 2026 | Weber David A. | VP, Gas Supply | Sell (S) | 2K | $89K |
| Mar 5, 2026 | WILSON BRODY J | VP, Treas, Controller & CAO | Tax withholding (F) | 937 | $49K |
| Mar 5, 2026 | ANDERSON DAVID HUGO | Director | Tax withholding (F) | 6K | $307K |
| Mar 5, 2026 | ANDERSON DAVID HUGO | Director | Tax withholding (F) | 4K | $197K |
| Mar 5, 2026 | Weber David A. | VP, Gas Supply | Tax withholding (F) | 937 | $49K |
| Mar 5, 2026 | Weber David A. | VP, Gas Supply | Tax withholding (F) | 546 | $29K |
| Mar 5, 2026 | Weber David A. | VP, Gas Supply | Sell (S) | 1 | $32 |
| Mar 5, 2026 | Karney Joseph S | VP, Eng. & Utility Operations | Tax withholding (F) | 136 | $7K |
| Mar 5, 2026 | Karney Joseph S | VP, Eng. & Utility Operations | Tax withholding (F) | 636 | $33K |
| Mar 5, 2026 | Karney Joseph S | VP, Eng. & Utility Operations | Sell (S) | 1 | $30 |
| Mar 5, 2026 | Karney Joseph S | VP, Eng. & Utility Operations | Sell (S) | 1 | $30 |
| Mar 5, 2026 | Palfreyman Justin | President & CEO, Director | Tax withholding (F) | 4K | $205K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 98 funds | $41.0B |
| AMAZON.COM INCAMZN | 97 funds | $29.9B |
| ALPHABET INC-CL AGOOGL | 97 funds | $27.5B |
| VISA INC-CLASS A SHARESV | 97 funds | $8.7B |
| META PLATFORMS INC-CLASS AMETA | 96 funds | $18.8B |
| ELI LILLY & COLLY | 96 funds | $10.3B |
| UNITEDHEALTH GROUP INCUNH | 96 funds | $4.4B |
| NVIDIA CORPNVDA | 95 funds | $56.3B |
| BROADCOM INCAVGO | 95 funds | $21.4B |
| COSTCO WHOLESALE CORPCOST | 95 funds | $7.5B |
| HOME DEPOT INCHD | 95 funds | $5.0B |
| APPLE INCAAPL | 94 funds | $47.7B |
Ranked by how many of NWN's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for NWN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.