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 GBR 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/GBR"
Use Arkolith to show who owns GBR, 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 | $36K | 48K | —Held | Q4 2025 | |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $31K | 38K | ▲+14% Added · +5K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $27K | 33K | ▲New +33K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $19K | 24K | —Held | Q1 2026 | |
| 5 | UBS Group AG | $17K | 21K | ▲59× Added · +21K sh | Q1 2026 | |
| 6 | VANGUARD FIDUCIARY TRUST CO | $12K | 15K | ▲New +15K sh | Q1 2026 | |
| 7 | Tower Research Capital LLC (TRC) | $3K | 4K | ▼−0.1% Reduced · −6 sh | Q1 2026 | |
| 8 | SBI Securities Co., Ltd. | $1 | 1 | ▲New +1 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 |
|---|---|---|---|---|---|
| Aug 28, 2025 | REALTY ADVISORS INC | 10% Owner | Sell (S) | 246K | $283K |
| Dec 20, 2024 | REALTY ADVISORS INC | 10% Owner | Sell (S) | 250K | $290K |
| Oct 31, 2024 | REALTY ADVISORS INC | 10% Owner | Sell (S) | 249K | $291K |
| Company | Co-held by | Combined value |
|---|---|---|
| SS SPDR S&P 500 ETF TRUST-USSPY | 3 funds | $5.8B |
| NVIDIA CORPNVDA | 3 funds | $3.7B |
| ISHARES CORE S&P 500 ETFIVV | 3 funds | $2.7B |
| AMAZON.COM INCAMZN | 3 funds | $2.0B |
| ISHARES RUSSELL 2000 ETFIWM | 3 funds | $1.9B |
| APPLE INCAAPL | 3 funds | $1.9B |
| SS SPDR DOW JONES INDUS AVGDIA | 3 funds | $1.8B |
| MICRON TECHNOLOGY INCMU | 3 funds | $1.6B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 3 funds | $1.4B |
| MICROSOFT CORPMSFT | 3 funds | $1.3B |
| META PLATFORMS INC-CLASS AMETA | 3 funds | $1.2B |
| ALPHABET INC-CL AGOOGL | 3 funds | $1.0B |
Ranked by how many of GBR'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 GBR. 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.