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 TRN 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/TRN"
Use Arkolith to show who owns TRN, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD PORTFOLIO MANAGEMENT LLC | $170.7M | 5.3M | ▲New +5.3M sh | Q1 2026 | |
| 2 | STATE STREET CORP | $124.8M | 3.9M | ▲+25% Added · +772K sh | Q1 2026 | |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | $62.6M | 1.9M | ▲+2.6% Added · +49K sh | Q1 2026 | |
| 4 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $17.5M | 544K | ▲+3.6% Added · +19K sh | Q1 2026 | |
| 5 | VANGUARD FIDUCIARY TRUST CO | $17.3M | 536K | ▲New +536K sh | Q1 2026 | |
| 6 | First Eagle Investment Management, LLC | $13.4M | 416K | ▲+4.9% Added · +19K sh | Q1 2026 | |
| 7 | EARNEST PARTNERS LLC | $12.4M | 384K | ▼−3.5% Reduced · −14K sh | Q1 2026 | |
| 8 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | $11.4M | 355K | ▲+802% Added · +316K sh | Q1 2026 | |
| 9 | FMR LLC | $10.0M | 311K | ▲+18% Added · +47K sh | Q1 2026 | |
| 10 | PUBLIC SECTOR PENSION INVESTMENT BOARD | $9.2M | 287K | ▲+3.3% Added · +9K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $6.1M | 188K | ▼−35% Reduced · −100K sh | Q1 2026 | |
| 12 | STEPHENS INC /AR/ | $5.4M | 167K | ▲+19% Added · +26K sh | Q1 2026 | |
| 13 | TUDOR INVESTMENT CORP ET AL | $3.5M | 107K | ▼−11% Reduced · −14K sh | Q1 2026 | |
| 14 | Universal- Beteiligungs- und Servicegesellschaft mbH | $3.3M | 101K | ▲+131% Added · +58K sh | Q1 2026 | |
| 15 | Trexquant Investment LP | $2.4M | 75K | ▼−27% Reduced · −28K sh | Q1 2026 | |
| 16 | TD Waterhouse Canada Inc. | $2.3M | 70K | ▲+7.5% Added · +5K sh | Q1 2026 | |
| 17 | INTECH INVESTMENT MANAGEMENT LLC | $2.1M | 65K | ▲+106% Added · +33K sh | Q1 2026 | |
| 18 | LOS ANGELES CAPITAL MANAGEMENT LLC | $1.9M | 58K | ▲80× Added · +57K sh | Q1 2026 | |
| 19 | SEGALL BRYANT & HAMILL, LLC | $1.6M | 49K | ▲New +49K sh | Q1 2026 | |
| 20 | Illinois Municipal Retirement Fund | $1.5M | 45K | ▲+10% Added · +4K sh | Q1 2026 | |
| 21 | MetLife Investment Management, LLC | $1.4M | 44K | ▲+1.6% Added · +699 sh | Q1 2026 | |
| 22 | Zurcher Kantonalbank (Zurich Cantonalbank) | $1.2M | 36K | ▲+47% Added · +12K sh | Q1 2026 | |
| 23 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $1.2M | 36K | ▲+55% Added · +13K sh | Q1 2026 | |
| 24 | Advisors Asset Management, Inc. | $1.1M | 35K | ▼−7.0% Reduced · −3K sh | Q1 2026 | |
| 25 | MAI Capital Management | $753K | 23K | ▼−7.5% Reduced · −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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 94 funds | $38.7B |
| META PLATFORMS INC-CLASS AMETA | 93 funds | $18.4B |
| ALPHABET INC-CL AGOOGL | 92 funds | $23.9B |
| BROADCOM INCAVGO | 92 funds | $19.3B |
| UNITEDHEALTH GROUP INCUNH | 92 funds | $3.4B |
| NVIDIA CORPNVDA | 91 funds | $52.2B |
| AMAZON.COM INCAMZN | 91 funds | $28.4B |
| ELI LILLY & COLLY | 91 funds | $10.0B |
| VISA INC-CLASS A SHARESV | 91 funds | $7.7B |
| COSTCO WHOLESALE CORPCOST | 91 funds | $7.1B |
| MASTERCARD INC - AMA | 91 funds | $6.2B |
| COMCAST CORP-CLASS ACMCSA | 91 funds | $2.6B |
Ranked by how many of TRN'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 TRN. 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.