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 JHG 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/JHG"
Use Arkolith to show who owns JHG, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | TRIAN FUND MANAGEMENT, L.P. | $1.6B | 31.9M | —Held | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $296.5M | 5.8M | ▲New +5.8M sh | Q1 2026 | |
| 3 | STATE STREET CORP | $225.2M | 4.4M | ▼−0.6% Reduced · −26K sh | Q1 2026 | |
| 4 | HBK INVESTMENTS L P | $217.3M | 4.2M | ▲New +4.2M sh | Q1 2026 | |
| 5 | CITADEL ADVISORS LLC | $193.8M | 3.8M | ▲24× Added · +3.6M sh | Q1 2026 | |
| 6 | TIG Advisors, LLC | $97.9M | 1.9M | ▲New +1.9M sh | Q1 2026 | |
| 7 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | $92.3M | 1.8M | ▲+191% Added · +1.2M sh | Q1 2026 | |
| 8 | AQR Arbitrage LLC | $74.0M | 1.4M | ▲+445% Added · +1.2M sh | Q1 2026 | |
| 9 | Man Group plc | $45.4M | 884K | ▲169× Added · +878K sh | Q1 2026 | |
| 10 | LMR Partners LLP | $44.9M | 873K | ▲New +873K sh | Q1 2026 | |
| 11 | VANGUARD FIDUCIARY TRUST CO | $39.3M | 765K | ▲New +765K sh | Q1 2026 | |
| 12 | PICTON MAHONEY ASSET MANAGEMENT | $21.8M | 425K | ▲+143% Added · +250K sh | Q1 2026 | |
| 13 | IEQ CAPITAL, LLC | $21.5M | 419K | ▼−2.8% Reduced · −12K sh | Q1 2026 | |
| 14 | Woodline Partners LP | $21.4M | 418K | ▲+82% Added · +188K sh | Q1 2026 | |
| 15 | TUDOR INVESTMENT CORP ET AL | $18.4M | 358K | ▲29× Added · +346K sh | Q1 2026 | |
| 16 | Hudson Bay Capital Management LP | $18.2M | 355K | ▼−79% Reduced · −1.3M sh | Q1 2026 | |
| 17 | Westchester Capital Management, LLC | $11.9M | 231K | ▲New +231K sh | Q1 2026 | |
| 18 | Capula Management Ltd | $11.6M | 225K | ▲New +225K sh | Q1 2026 | |
| 19 | Verition Fund Management LLC | $10.2M | 199K | ▲+59% Added · +74K sh | Q1 2026 | |
| 20 | Polar Asset Management Partners Inc. | $10.1M | 197K | ▲+323% Added · +150K sh | Q1 2026 | |
| 21 | CWM, LLC | $8.2M | 161K | ▲+8.6% Added · +13K sh | Q1 2026 | |
| 22 | TEACHER RETIREMENT SYSTEM OF TEXAS | $7.3M | 142K | ▼−1.8% Reduced · −3K sh | Q1 2026 | |
| 23 | Point72 Asset Management, L.P. | $7.0M | 137K | ▲New +137K sh | Q1 2026 | |
| 24 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $6.2M | 121K | —Held | Q1 2026 | |
| 25 | Engineers Gate Manager LP | $6.1M | 118K | ▲New +118K 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 |
|---|---|---|---|---|---|
| Mar 10, 2026 | PODZOROV MEGAN | Chief People Officer | Sell (S) | 2K | $85K |
| Mar 2, 2026 | PODZOROV MEGAN | Chief People Officer | Tax withholding (F) | 286 | $15K |
| Mar 2, 2026 | FOGO GEORGINA | CHIEF RISK OFFICER | Tax withholding (F) | 11K | $567K |
| Mar 2, 2026 | CRAWFORD BERG | CHIEF ACCOUNTING OFFICER | Tax withholding (F) | 43 | $2K |
| Mar 2, 2026 | CASSIDY WILLIAM B | Chief Technology Officer | Tax withholding (F) | 5K | $280K |
| Mar 2, 2026 | THOMPSON ROGER MJ | CHIEF FINANCIAL OFFICER | Tax withholding (F) | 11K | $549K |
| Mar 2, 2026 | ROSENBERG MICHELLE | CAO & GENERAL COUNSEL | Tax withholding (F) | 8K | $407K |
| Mar 2, 2026 | Dibadj Ali | CEO, Director | Tax withholding (F) | 43K | $2.2M |
| Feb 27, 2026 | THOMPSON ROGER MJ | CHIEF FINANCIAL OFFICER | Grant (A) | 25K | $1.2M |
| Feb 27, 2026 | FOGO GEORGINA | CHIEF RISK OFFICER | Grant (A) | 14K | $678K |
| Feb 27, 2026 | Dibadj Ali | CEO, Director | Grant (A) | 80K | $3.9M |
| Feb 27, 2026 | ROSENBERG MICHELLE | CAO & GENERAL COUNSEL | Grant (A) | 29K | $1.4M |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 173 funds | $54.9B |
| NVIDIA CORPNVDA | 170 funds | $75.8B |
| META PLATFORMS INC-CLASS AMETA | 169 funds | $24.6B |
| AMAZON.COM INCAMZN | 168 funds | $41.0B |
| ALPHABET INC-CL AGOOGL | 167 funds | $36.3B |
| BROADCOM INCAVGO | 167 funds | $28.4B |
| TESLA INCTSLA | 167 funds | $16.4B |
| NETFLIX INCNFLX | 167 funds | $7.6B |
| APPLE INCAAPL | 166 funds | $67.6B |
| SCHWAB (CHARLES) CORPSCHW | 166 funds | $3.2B |
| ELI LILLY & COLLY | 165 funds | $14.0B |
| MASTERCARD INC - AMA | 165 funds | $9.1B |
Ranked by how many of JHG'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 JHG. 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.