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 RM 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/RM"
Use Arkolith to show who owns RM, 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. | $36.7M | 1.1M | ▼−0.3% Reduced · −3K sh | Q1 2026 | |
| 2 | BASSWOOD CAPITAL MANAGEMENT, L.L.C. | $27.3M | 821K | ▼−4.2% Reduced · −36K sh | Q1 2026 | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $22.3M | 692K | ▲~0% Added · +333 sh | Q1 2026 | |
| 4 | VANGUARD GROUP INC | $17.8M | 459K | ▲+0.4% Added · +2K sh | Q4 2025 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $11.1M | 345K | ▲New +345K sh | Q1 2026 | |
| 6 | AMERICAN CENTURY COMPANIES INC | $8.4M | 261K | ▲+11% Added · +25K sh | Q1 2026 | |
| 7 | RENAISSANCE TECHNOLOGIES LLC | $7.2M | 223K | ▼−8.2% Reduced · −20K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $6.9M | 213K | ▲+4.0% Added · +8K sh | Q1 2026 | |
| 9 | STATE STREET CORP | $5.6M | 174K | ▼−0.8% Reduced · −1K sh | Q1 2026 | |
| 10 | GOLDMAN SACHS GROUP INC | $5.3M | 163K | ▲+8.2% Added · +12K sh | Q1 2026 | |
| 11 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.2M | 160K | ▼−13% Reduced · −23K sh | Q1 2026 | |
| 12 | SEI INVESTMENTS CO | $5.1M | 157K | ▲+118% Added · +85K sh | Q1 2026 | |
| 13 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $3.8M | 117K | ▲+4.8% Added · +5K sh | Q1 2026 | |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $3.5M | 108K | ▲+2.5% Added · +3K sh | Q1 2026 | |
| 15 | Hillsdale Investment Management Inc. | $3.1M | 98K | —Held | Q1 2026 | |
| 16 | NORTHERN TRUST CORP | $3.0M | 93K | ▲+1.0% Added · +905 sh | Q1 2026 | |
| 17 | MORGAN STANLEY | $2.7M | 84K | ▲+24% Added · +16K sh | Q1 2026 | |
| 18 | Bank of New York Mellon Corp | $2.4M | 76K | ▼−5.0% Reduced · −4K sh | Q1 2026 | |
| 19 | JACOBS LEVY EQUITY MANAGEMENT, INC | $2.3M | 71K | ▲+14% Added · +9K sh | Q1 2026 | |
| 20 | AQR CAPITAL MANAGEMENT LLC | $2.1M | 64K | ▲+58% Added · +23K sh | Q1 2026 | |
| 21 | FMR LLC | $2.0M | 63K | ▲+9.6% Added · +5K sh | Q1 2026 | |
| 22 | Empowered Funds, LLC | $2.0M | 61K | ▲+9.7% Added · +5K sh | Q1 2026 | |
| 23 | VANGUARD FIDUCIARY TRUST CO | $1.8M | 56K | ▲New +56K sh | Q1 2026 | |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.7M | 53K | ▲New +53K sh | Q1 2026 | |
| 25 | AMERIPRISE FINANCIAL INC | $1.5M | 46K | ▲+4.5% Added · +2K 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 27, 2026 | Palomares Carlos | Director | Option exercise (M) | 9K | $0 |
| Feb 27, 2026 | Palomares Carlos | Director | Tax withholding (F) | 5K | $146K |
| Feb 27, 2026 | Palomares Carlos | Director | Option exercise (M) | 9K | $146K |
| Feb 23, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 259 | $9K |
| Feb 23, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 57 | $2K |
| Feb 23, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 22 | $749 |
| Feb 23, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 980 | $33K |
| Feb 23, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 1K | $45K |
| Feb 20, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 632 | $22K |
| Feb 20, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 54 | $2K |
| Feb 20, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 3K | $110K |
| Feb 20, 2026 | LINDENBAUM MATTHEW A | Director, 10% Owner | Sell (S) | 138 | $5K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 29 funds | $12.8B |
| AMAZON.COM INCAMZN | 29 funds | $10.3B |
| BROADCOM INCAVGO | 29 funds | $6.8B |
| META PLATFORMS INC-CLASS AMETA | 29 funds | $6.2B |
| TESLA INCTSLA | 29 funds | $4.2B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 29 funds | $3.3B |
| ELI LILLY & COLLY | 29 funds | $3.1B |
| COSTCO WHOLESALE CORPCOST | 29 funds | $2.5B |
| PALANTIR TECHNOLOGIES INC-APLTR | 29 funds | $1.7B |
| BANK OF AMERICA CORPBAC | 29 funds | $1.5B |
| SCHWAB (CHARLES) CORPSCHW | 29 funds | $1.1B |
| MCKESSON CORPMCK | 29 funds | $1.1B |
Ranked by how many of RM'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 RM. 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.