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 RR 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/RR"
Use Arkolith to show who owns RR, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | $17.8M | 8.5M | ▲+143% Added · +5.0M sh | Q1 2026 | |
| 2 | STATE STREET CORP | $9.5M | 4.5M | ▲+2.2% Added · +96K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $3.2M | 1.6M | ▲New +1.6M sh | Q1 2026 | |
| 4 | VANGUARD FIDUCIARY TRUST CO | $2.2M | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 5 | CITADEL ADVISORS LLC | $1.7M | 819K | ▼−69% Reduced · −1.8M sh | Q1 2026 | |
| 6 | Point72 Asset Management, L.P. | $1.2M | 556K | ▲New +556K sh | Q1 2026 | |
| 7 | PEAK6 LLC | $787K | 376K | ▲+136% Added · +217K sh | Q1 2026 | |
| 8 | Vontobel Holding Ltd. | $749K | 358K | ▲+155% Added · +218K sh | Q1 2026 | |
| 9 | Zurcher Kantonalbank (Zurich Cantonalbank) | $202K | 97K | ▲+23% Added · +18K sh | Q1 2026 | |
| 10 | GROUP ONE TRADING LLC | $169K | 81K | ▼−86% Reduced · −487K sh | Q1 2026 | |
| 11 | MetLife Investment Management, LLC | $116K | 56K | ▼−36% Reduced · −32K sh | Q1 2026 | |
| 12 | INTECH INVESTMENT MANAGEMENT LLC | $84K | 40K | ▲+94% Added · +20K sh | Q1 2026 | |
| 13 | IFP Advisors, Inc | $84K | 40K | ▲+55% Added · +14K sh | Q1 2026 | |
| 14 | Wealthfront Advisers LLC | $77K | 37K | ▼−38% Reduced · −22K sh | Q1 2026 | |
| 15 | Private Advisor Group, LLC | $73K | 35K | ▲+7.8% Added · +3K sh | Q1 2026 | |
| 16 | KESTRA PRIVATE WEALTH SERVICES, LLC | $65K | 31K | ▲New +31K sh | Q1 2026 | |
| 17 | Centiva Capital, LP | $62K | 29K | ▲New +29K sh | Q1 2026 | |
| 18 | CENTAURUS FINANCIAL, INC. | $52K | 25K | ▼−2.0% Reduced · −500 sh | Q1 2026 | |
| 19 | DIVERSIFY WEALTH MANAGEMENT, LLC | $52K | 22K | ▲New +22K sh | Q1 2026 | |
| 20 | Marex Group plc | $48K | 23K | ▲New +23K sh | Q1 2026 | |
| 21 | WealthPlan Investment Management, LLC | $44K | 21K | ▼−84% Reduced · −112K sh | Q1 2026 | |
| 22 | CAPITAL ADVISORS INC/OK | $33K | 16K | ▼−42% Reduced · −12K sh | Q1 2026 | |
| 23 | XPONANCE LLC | $31K | 15K | ▲+25% Added · +3K sh | Q1 2026 | |
| 24 | Swiss Life Asset Management Ltd | $31K | 12K | ▲New +12K sh | Q1 2026 | |
| 25 | Concurrent Investment Advisors, LLC | $29K | 14K | ▲+3.6% Added · +480 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 |
|---|---|---|---|---|---|
| Feb 19, 2026 | Casella Matthew G. | Insider | Sell (S) | 13K | $34K |
| Feb 17, 2026 | Casella Matthew G. | Insider | Sell (S) | 20K | $56K |
| Feb 13, 2026 | Casella Matthew G. | Insider | Sell (S) | 40K | $120K |
| Dec 4, 2025 | Huang Zhenqiang | Chief Financial Officer, Director, 10% Owner | Grant (A) | 400K | $0 |
| Dec 4, 2025 | Huang Zhenqiang | Chief Financial Officer, Director, 10% Owner | Tax withholding (F) | 180K | $826K |
| Dec 4, 2025 | Huang Zhenwu | Chief Executive Officer, Director | Grant (A) | 400K | $0 |
| Dec 4, 2025 | Huang Zhenwu | Chief Executive Officer, Director | Tax withholding (F) | 180K | $826K |
| Dec 4, 2025 | Casella Matthew G. | President | Grant (A) | 60K | $0 |
| Dec 4, 2025 | Zheng Phil | Chief Operating Officer | Tax withholding (F) | 222K | $1.0M |
| Dec 4, 2025 | Zheng Phil | Chief Operating Officer | Grant (A) | 600K | $0 |
| Oct 29, 2025 | Factor Saul | Director | Grant (A) | 24K | $0 |
| Oct 29, 2025 | Shigley John | Director | Grant (A) | 24K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 51 funds | $17.7B |
| BROADCOM INCAVGO | 51 funds | $10.4B |
| META PLATFORMS INC-CLASS AMETA | 51 funds | $8.4B |
| MASTERCARD INC - AMA | 51 funds | $3.9B |
| UNITEDHEALTH GROUP INCUNH | 51 funds | $2.0B |
| UBER TECHNOLOGIES INCUBER | 51 funds | $1.5B |
| NVIDIA CORPNVDA | 50 funds | $26.4B |
| ELI LILLY & COLLY | 50 funds | $5.3B |
| VISA INC-CLASS A SHARESV | 50 funds | $4.4B |
| MICRON TECHNOLOGY INCMU | 50 funds | $3.7B |
| ORACLE CORPORCL | 50 funds | $2.8B |
| INTUITIVE SURGICAL INCISRG | 50 funds | $2.2B |
Ranked by how many of RR'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 RR. 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.