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 GRRR 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/GRRR"
Use Arkolith to show who owns GRRR, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | STATE STREET CORP | $3.3M | 314K | ▲+4.3% Added · +13K sh | Q1 2026 | |
| 2 | SBI Securities Co., Ltd. | $1.9M | 179K | ▼−5.3% Reduced · −10K sh | Q1 2026 | |
| 3 | OPPENHEIMER & CO INC | $987K | 94K | ▼−23% Reduced · −29K sh | Q1 2026 | |
| 4 | Daiwa Securities Group Inc. | $926K | 88K | ▲New +88K sh | Q1 2026 | |
| 5 | CITADEL ADVISORS LLC | $580K | 55K | ▼−83% Reduced · −260K sh | Q1 2026 | |
| 6 | GROUP ONE TRADING LLC | $341K | 32K | ▼−18% Reduced · −7K sh | Q1 2026 | |
| 7 | Centiva Capital, LP | $330K | 31K | ▲+711% Added · +27K sh | Q1 2026 | |
| 8 | Hennion & Walsh Asset Management, Inc. | $212K | 20K | ▼−2.9% Reduced · −597 sh | Q1 2026 | |
| 9 | Ashton Thomas Private Wealth, LLC | $162K | 15K | ▲New +15K sh | Q1 2026 | |
| 10 | SEB Asset Management AB | $161K | 15K | ▲New +15K sh | Q1 2026 | |
| 11 | Engineers Gate Manager LP | $159K | 15K | ▼−58% Reduced · −21K sh | Q1 2026 | |
| 12 | NewEdge Advisors, LLC | $13K | 1K | ▼−45% Reduced · −1K sh | Q1 2026 | |
| 13 | Federation des caisses Desjardins du Quebec | $6K | 550 | ▲+10% Added · +50 sh | Q1 2026 | |
| 14 | Aquatic Capital Management LLC | $3K | 250 | ▲New +250 sh | Q1 2026 | |
| 15 | Clearstead Advisors, LLC | $1K | 100 | —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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 24 funds | $3.3B |
| MICROSOFT CORPMSFT | 23 funds | $11.7B |
| AMAZON.COM INCAMZN | 23 funds | $9.8B |
| ALPHABET INC-CL AGOOGL | 23 funds | $7.6B |
| META PLATFORMS INC-CLASS AMETA | 23 funds | $5.6B |
| MICRON TECHNOLOGY INCMU | 23 funds | $3.5B |
| ELI LILLY & COLLY | 23 funds | $2.3B |
| PALANTIR TECHNOLOGIES INC-APLTR | 23 funds | $2.1B |
| MASTERCARD INC - AMA | 23 funds | $2.1B |
| COSTCO WHOLESALE CORPCOST | 23 funds | $1.9B |
| ADVANCED MICRO DEVICESAMD | 23 funds | $1.4B |
| BOSTON SCIENTIFIC CORPBSX | 23 funds | $1.1B |
Ranked by how many of GRRR's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GRRR. 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.