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 HBIO 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/HBIO"
Use Arkolith to show who owns HBIO, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | $795K | 163K | ▲New +163K sh | Q1 2026 | |
| 2 | TWO SIGMA INVESTMENTS, LP | $556K | 114K | ▼−89% Reduced · −898K sh | Q1 2026 | |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $494K | 101K | ▼−90% Reduced · −920K sh | Q1 2026 | |
| 4 | BlackRock, Inc. | $303K | 62K | ▼−90% Reduced · −560K sh | Q1 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $290K | 60K | ▼−87% Reduced · −401K sh | Q1 2026 | |
| 6 | MILLENNIUM MANAGEMENT LLC | $226K | 46K | ▼−92% Reduced · −500K sh | Q1 2026 | |
| 7 | VANGUARD FIDUCIARY TRUST CO | $135K | 28K | ▲New +28K sh | Q1 2026 | |
| 8 | JANE STREET GROUP, LLC | $116K | 24K | ▼−94% Reduced · −391K sh | Q1 2026 | |
| 9 | STATE STREET CORP | $73K | 15K | ▼−90% Reduced · −134K sh | Q1 2026 | |
| 10 | Bank of New York Mellon Corp | $50K | 10K | ▼−92% Reduced · −116K sh | Q1 2026 | |
| 11 | UBS Group AG | $41K | 8K | ▼−60% Reduced · −13K sh | Q1 2026 | |
| 12 | CITIGROUP INC | $31K | 6K | ▼−97% Reduced · −188K sh | Q1 2026 | |
| 13 | JPMORGAN CHASE & CO | $21K | 4K | ▲+128% Added · +3K sh | Q1 2026 | |
| 14 | FMR LLC | $16K | 3K | ▼−90% Reduced · −30K sh | Q1 2026 | |
| 15 | GROUP ONE TRADING LLC | $11K | 2K | ▼−91% Reduced · −23K sh | Q1 2026 | |
| 16 | MORGAN STANLEY | $8K | 2K | ▼−90% Reduced · −15K sh | Q1 2026 | |
| 17 | Tower Research Capital LLC (TRC) | $6K | 1K | ▼−52% Reduced · −1K sh | Q1 2026 | |
| 18 | SBI Securities Co., Ltd. | $4K | 866 | ▼−90% Reduced · −8K sh | Q1 2026 | |
| 19 | ROYAL BANK OF CANADA | $4K | 855 | ▼−82% Reduced · −4K sh | Q1 2026 | |
| 20 | NISA INVESTMENT ADVISORS, LLC | $1K | 228 | ▼−90% Reduced · −2K sh | Q1 2026 | |
| 21 | FEDERATED HERMES, INC. | $356 | 73 | ▼−96% Reduced · −2K sh | Q1 2026 | |
| 22 | BNP PARIBAS FINANCIAL MARKETS | $331 | 68 | ▼−90% Reduced · −612 sh | Q1 2026 | |
| 23 | PNC FINANCIAL SERVICES GROUP, INC. | $68 | 14 | ▼−90% Reduced · −130 sh | Q1 2026 | |
| 24 | CWM, LLC | $19 | 4 | ▼−93% Reduced · −50 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 |
|---|---|---|---|---|---|
| Jun 9, 2026 | Gagnon Robert E. | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Benson Seth Benjamin | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Snider William | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Eade Katherine A. | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | DENELSKY STEPHEN J | Director | Grant (A) | 17K | $0 |
| Mar 20, 2026 | Duke John D | Chief Executive Officer, Director | Grant (A) | 75K | $0 |
| Mar 17, 2026 | Snider William | Director | Buy (P) | 8K | $41K |
| Mar 17, 2026 | DENELSKY STEPHEN J | Director | Buy (P) | 10K | $49K |
| Mar 16, 2026 | Snider William | Director | Buy (P) | 13K | $62K |
| Mar 16, 2026 | Duke John D | Chief Executive Officer, Director | Buy (P) | 5K | $25K |
| Dec 17, 2025 | Snider William | Director | Grant (A) | 110K | $0 |
| Sep 5, 2025 | DENELSKY STEPHEN J | Director | Grant (A) | 110K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 4 funds | $1.3B |
| ALPHABET INC-CL AGOOGL | 4 funds | $846.2M |
| AMAZON.COM INCAMZN | 4 funds | $830.2M |
| BROADCOM INCAVGO | 4 funds | $627.7M |
| META PLATFORMS INC-CLASS AMETA | 4 funds | $502.5M |
| TESLA INCTSLA | 4 funds | $456.7M |
| JPMORGAN CHASE & COJPM | 4 funds | $438.0M |
| JOHNSON & JOHNSONJNJ | 4 funds | $351.8M |
| ELI LILLY & COLLY | 4 funds | $338.2M |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 4 funds | $308.4M |
| VANGUARD TOTAL STOCK MKT ETFVTI | 4 funds | $296.2M |
| VISA INC-CLASS A SHARESV | 4 funds | $247.6M |
Ranked by how many of HBIO'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 HBIO. 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.