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 HQ 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/HQ"
Use Arkolith to show who owns HQ, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | $5.6M | 635K | ▲New +635K sh | Q1 2026 | |
| 2 | CITADEL ADVISORS LLC | $2.2M | 251K | ▲New +251K sh | Q1 2026 | |
| 3 | Hudson Bay Capital Management LP | $1.4M | 160K | ▲New +160K sh | Q1 2026 | |
| 4 | Federation des caisses Desjardins du Quebec | $6K | 700 | ▲New +700 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 19, 2026 | Fitzsimons Joseph Francis | Chief Executive Officer, Director, 10% Owner | Grant (A) | 19.7M | — |
| Mar 19, 2026 | Gould Greg | Chief Financial Officer | Grant (A) | 285K | — |
| Mar 19, 2026 | Tan Si-Hui | Chief Science Officer | Grant (A) | 500K | — |
| Mar 19, 2026 | Lambert Danielle | Director | Buy (P) | 85K | $1000K |
| Mar 19, 2026 | You Harry L. | Director, 10% Owner | Grant (A) | 1.2M | — |
| Mar 19, 2026 | You Harry L. | Director, 10% Owner | Grant (A) | 2.9M | — |
| Class | 13F holders | Value held |
|---|---|---|
| HQWWWRT | 15 funds | $2.2M |
| HQthis pageStock | 9 funds | $11.9M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 5 funds | $6.6B |
| AMAZON.COM INCAMZN | 5 funds | $3.2B |
| MICROSOFT CORPMSFT | 5 funds | $2.1B |
| BROADCOM INCAVGO | 5 funds | $1.9B |
| MICRON TECHNOLOGY INCMU | 5 funds | $1.8B |
| META PLATFORMS INC-CLASS AMETA | 5 funds | $1.4B |
| UNITEDHEALTH GROUP INCUNH | 5 funds | $749.2M |
| MASTERCARD INC - AMA | 5 funds | $716.3M |
| T-MOBILE US INCTMUS | 5 funds | $659.1M |
| SS SPDR S&P 500 ETF TRUST-USSPY | 5 funds | $568.5M |
| ORACLE CORPORCL | 5 funds | $537.2M |
| AIRBNB INC-CLASS AABNB | 5 funds | $499.2M |
Ranked by how many of HQ'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 HQ. 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.