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 NIU 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/NIU"
Use Arkolith to show who owns NIU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Vinva Investment Management Ltd | $35.4M | 531K | ▲New +531K sh | Q1 2026 | |
| 2 | MORGAN STANLEY | $3.8M | 1.3M | ▼−9.8% Reduced · −144K sh | Q1 2026 | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $1.2M | 410K | ▼−7.3% Reduced · −32K sh | Q1 2026 | |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $925K | 320K | ▼−41% Reduced · −224K sh | Q1 2026 | |
| 5 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $583K | 202K | ▼−26% Reduced · −72K sh | Q1 2026 | |
| 6 | Qube Research & Technologies Ltd | $564K | 195K | ▼−53% Reduced · −222K sh | Q1 2026 | |
| 7 | JANE STREET GROUP, LLC | $442K | 153K | ▲+23% Added · +29K sh | Q1 2026 | |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $397K | 137K | ▲+2.2% Added · +3K sh | Q1 2026 | |
| 9 | STATE STREET CORP | $334K | 116K | ▼−5.2% Reduced · −6K sh | Q1 2026 | |
| 10 | Pathstone Holdings, LLC | $295K | 102K | ▼−1.0% Reduced · −1K sh | Q1 2026 | |
| 11 | MILLENNIUM MANAGEMENT LLC | $222K | 77K | ▼−69% Reduced · −167K sh | Q1 2026 | |
| 12 | CITADEL ADVISORS LLC | $183K | 63K | ▲New +63K sh | Q1 2026 | |
| 13 | UBS Group AG | $164K | 57K | ▼−68% Reduced · −121K sh | Q1 2026 | |
| 14 | Susquehanna Portfolio Strategies, LLC | $129K | 45K | ▼−58% Reduced · −61K sh | Q1 2026 | |
| 15 | Police & Firemen's Retirement System of New Jersey | $123K | 42K | —Held | Q1 2026 | |
| 16 | Centiva Capital, LP | $106K | 37K | ▲+2.1% Added · +761 sh | Q1 2026 | |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | $100K | 34K | ▼−23% Reduced · −10K sh | Q1 2026 | |
| 18 | BARCLAYS PLC | $96K | 33K | ▼−44% Reduced · −26K sh | Q1 2026 | |
| 19 | Connor, Clark & Lunn Investment Management Ltd. | $61K | 21K | ▲+16% Added · +3K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $52K | 18K | ▼−65% Reduced · −33K sh | Q1 2026 | |
| 21 | BANCO BILBAO VIZCAYA ARGENTARIA, S.A. | $46K | 16K | —Held | Q1 2026 | |
| 22 | SIMPLEX TRADING, LLC | $37K | 13K | ▲+6.5% Added · +774 sh | Q1 2026 | |
| 23 | Russell Investments Group, Ltd. | $34K | 13K | —Held | Q1 2026 | |
| 24 | EverSource Wealth Advisors, LLC | $15K | 5K | ▲+62% Added · +2K sh | Q1 2026 | |
| 25 | NATIONAL BANK OF CANADA /FI/ | $8K | 3K | —Held | 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 16, 2026 | Zhou Fion Wenjuan | Chief Financial Officer, Director | Sell (S) | 22K | $77K |
| Mar 15, 2026 | Zhou Fion Wenjuan | Chief Financial Officer, Director | Option exercise (M) | 45K | — |
| Mar 15, 2026 | Zhou Fion Wenjuan | Chief Financial Officer, Director | Option exercise (M) | 90K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 17 funds | $8.2B |
| AMAZON.COM INCAMZN | 17 funds | $7.7B |
| BROADCOM INCAVGO | 17 funds | $5.0B |
| MICRON TECHNOLOGY INCMU | 17 funds | $2.8B |
| VISA INC-CLASS A SHARESV | 17 funds | $2.3B |
| COSTCO WHOLESALE CORPCOST | 17 funds | $2.1B |
| ELI LILLY & COLLY | 17 funds | $2.1B |
| MASTERCARD INC - AMA | 17 funds | $1.8B |
| CHEVRON CORPCVX | 17 funds | $1.5B |
| UNITEDHEALTH GROUP INCUNH | 17 funds | $1.4B |
| ADVANCED MICRO DEVICESAMD | 17 funds | $1.4B |
| RTX CORPRTX | 17 funds | $1.2B |
Ranked by how many of NIU'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 NIU. 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.