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 RMR 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/RMR"
Use Arkolith to show who owns RMR, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $23.9M | 1.6M | ▼−0.9% Reduced · −15K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $20.9M | 1.4M | ▼−5.0% Reduced · −71K sh | Q1 2026 | |
| 3 | Nantahala Capital Management, LLC | $17.8M | 1.1M | —Held | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $13.3M | 862K | ▲New +862K sh | Q1 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $7.2M | 468K | ▲+2.2% Added · +10K sh | Q1 2026 | |
| 6 | STATE STREET CORP | $6.2M | 401K | ▲+2.5% Added · +10K sh | Q1 2026 | |
| 7 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $5.2M | 338K | ▼−55% Reduced · −405K sh | Q1 2026 | |
| 8 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $2.7M | 177K | ▼−6.0% Reduced · −11K sh | Q1 2026 | |
| 9 | Jefferies Financial Group Inc. | $1.7M | 111K | ▲+147% Added · +66K sh | Q1 2026 | |
| 10 | VANGUARD FIDUCIARY TRUST CO | $1.6M | 102K | ▲New +102K sh | Q1 2026 | |
| 11 | CWA Asset Management Group, LLC | $1.4M | 89K | ▲+24% Added · +17K sh | Q1 2026 | |
| 12 | AlphaCore Capital LLC | $1.2M | 79K | ▲New +79K sh | Q1 2026 | |
| 13 | CITADEL ADVISORS LLC | $772K | 50K | ▲+197% Added · +33K sh | Q1 2026 | |
| 14 | Trexquant Investment LP | $548K | 35K | ▲New +35K sh | Q1 2026 | |
| 15 | New Age Alpha Advisors, LLC | $461K | 30K | ▲New +30K sh | Q1 2026 | |
| 16 | RITHOLTZ WEALTH MANAGEMENT | $345K | 22K | ▲+112% Added · +12K sh | Q1 2026 | |
| 17 | FMR LLC | $298K | 19K | ▼−5.0% Reduced · −1K sh | Q1 2026 | |
| 18 | Connor, Clark & Lunn Investment Management Ltd. | $233K | 15K | ▼−52% Reduced · −16K sh | Q1 2026 | |
| 19 | Engineers Gate Manager LP | $226K | 15K | ▼−6.3% Reduced · −980 sh | Q1 2026 | |
| 20 | Sterling Capital Management LLC | $172K | 11K | ▼−37% Reduced · −6K sh | Q1 2026 | |
| 21 | MetLife Investment Management, LLC | $128K | 8K | —Held | Q1 2026 | |
| 22 | LOS ANGELES CAPITAL MANAGEMENT LLC | $122K | 8K | ▲New +8K sh | Q1 2026 | |
| 23 | Aquatic Capital Management LLC | $101K | 7K | ▲+2.4% Added · +152 sh | Q1 2026 | |
| 24 | CWM, LLC | $88K | 6K | ▼−5.7% Reduced · −339 sh | Q1 2026 | |
| 25 | Police & Firemen's Retirement System of New Jersey | $77K | 5K | —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 |
|---|---|---|---|---|---|
| Sep 16, 2025 | Bilotto Christopher J. | Exec. VP of The RMR Group LLC | Tax withholding (F) | 2K | $34K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 48 funds | $16.1B |
| BANK OF AMERICA CORPBAC | 48 funds | $1.9B |
| WELLS FARGO & COWFC | 48 funds | $1.9B |
| GENERAL MOTORS COGM | 48 funds | $1.6B |
| MORGAN STANLEYMS | 48 funds | $1.5B |
| GENERAL DYNAMICS CORPGD | 48 funds | $1.0B |
| CONOCOPHILLIPSCOP | 48 funds | $957.7M |
| FISERV INCFISV | 48 funds | $575.0M |
| NVIDIA CORPNVDA | 47 funds | $24.2B |
| APPLE INCAAPL | 47 funds | $21.3B |
| AMAZON.COM INCAMZN | 47 funds | $12.1B |
| ALPHABET INC-CL AGOOGL | 47 funds | $10.7B |
Ranked by how many of RMR'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 RMR. 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.