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 HBR 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/HBR"
Use Arkolith to show who owns HBR, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Beacon Pointe Advisors, LLC | $222K | 19K | ▼−1.8% Reduced · −332 sh | Q1 2026 | |
| 2 | AdvisorNet Financial, Inc | $9K | 760 | ▲+20% Added · +125 sh | Q1 2026 | |
| 3 | MAI Capital Management | $2K | 132 | ▲New +132 sh | Q1 2026 | |
| 4 | Federation des caisses Desjardins du Quebec | $476 | 40 | —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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| ROYAL BANK OF CANADARY | 4 funds | $2.2B |
| ISHARES CORE S&P 500 ETFIVV | 4 funds | $1.9B |
| APPLE INCAAPL | 4 funds | $1.8B |
| MICROSOFT CORPMSFT | 4 funds | $1.4B |
| NVIDIA CORPNVDA | 4 funds | $1.4B |
| AMAZON.COM INCAMZN | 4 funds | $984.3M |
| VANGUARD S&P 500 ETFVOO | 4 funds | $941.0M |
| SS SPDR S&P 500 ETF TRUST-USSPY | 4 funds | $882.3M |
| ALPHABET INC-CL AGOOGL | 4 funds | $851.4M |
| VANGUARD FTSE DEVELOPED ETFVEA | 4 funds | $651.3M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 4 funds | $603.1M |
| ALPHABET INC-CL CGOOG | 4 funds | $584.3M |
Ranked by how many of HBR'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 HBR. 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.