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 MTNB 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/MTNB"
Use Arkolith to show who owns MTNB, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $35K | 60K | —Held | Q4 2025 | |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $33K | 65K | ▲+16% Added · +9K sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $26K | 52K | ▼−21% Reduced · −14K sh | Q1 2026 | |
| 4 | BlackRock, Inc. | $25K | 50K | —Held | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $20K | 40K | ▲New +40K sh | Q1 2026 | |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $14K | 29K | ▼−1.4% Reduced · −400 sh | Q1 2026 | |
| 7 | XTX Topco Ltd | $10K | 21K | ▲+22% Added · +4K sh | Q1 2026 | |
| 8 | VANGUARD FIDUCIARY TRUST CO | $9K | 18K | ▲New +18K sh | Q1 2026 | |
| 9 | STATE STREET CORP | $8K | 15K | —Held | Q1 2026 | |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7K | 14K | ▼−32% Reduced · −7K sh | Q1 2026 | |
| 11 | Tower Research Capital LLC (TRC) | $1K | 3K | ▼−0.3% Reduced · −8 sh | Q1 2026 | |
| 12 | MORGAN STANLEY | $172 | 344 | ▼−39% Reduced · −217 sh | Q1 2026 | |
| 13 | UBS Group AG | $92 | 184 | ▼−70% Reduced · −423 sh | Q1 2026 | |
| 14 | WELLS FARGO & COMPANY/MN | $51 | 102 | —Held | Q1 2026 | |
| 15 | JONES FINANCIAL COMPANIES LLLP | $34 | 60 | —Held | Q1 2026 | |
| 16 | Steward Partners Investment Advisory, LLC | $31 | 61 | —Held | Q1 2026 | |
| 17 | EverSource Wealth Advisors, LLC | $30 | 60 | —Held | Q1 2026 | |
| 18 | OSAIC HOLDINGS, INC. | $25 | 50 | —Held | Q1 2026 | |
| 19 | ROTHSCHILD INVESTMENT LLC | $7 | 14 | —Held | Q1 2026 | |
| 20 | SBI Securities Co., Ltd. | $6 | 11 | —Held | Q1 2026 | |
| 21 | FMR LLC | $4 | 7 | ▲New +7 sh | Q1 2026 | |
| 22 | Farther Finance Advisors, LLC | $3 | 5 | ▼−99% Reduced · −417 sh | Q1 2026 | |
| 23 | MAI Capital Management | $1 | 2 | —Held | Q1 2026 | |
| 24 | Bogart Wealth, LLC | $1 | 2 | ▲New +2 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 |
|---|---|---|---|---|---|
| Apr 30, 2025 | D An Evelyn | Director | Grant (A) | 12K | $0 |
| Apr 30, 2025 | Jabbour Jerome D | President and CEO, Director | Grant (A) | 70K | $0 |
| Apr 30, 2025 | Murphy Keith | Director | Grant (A) | 12K | $0 |
| Apr 30, 2025 | NEUGEBOREN EDWARD | Director | Grant (A) | 12K | $0 |
| Apr 30, 2025 | Smith Robin L | Director | Grant (A) | 12K | $0 |
| Apr 8, 2025 | Pembroke & Partners LLC | 10% Owner | Buy (P) | 492 | $492K |
| Apr 8, 2025 | Sanitam Partners LLC | 10% Owner | Buy (P) | 703 | $703K |
| Apr 8, 2025 | Pembroke & Partners LLC | 10% Owner | Buy (P) | 1.7M | — |
| Apr 8, 2025 | EIDE ROBERT J | 10% Owner | Buy (P) | 492 | $492K |
| Apr 8, 2025 | EIDE ROBERT J | 10% Owner | Buy (P) | 1.7M | — |
| Apr 8, 2025 | Sanitam Partners LLC | 10% Owner | Buy (P) | 2.4M | — |
| Dec 15, 2023 | Liu Hui | Chief Technology Officer | Grant (A) | 1.0M | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 6 funds | $4.8B |
| APPLE INCAAPL | 6 funds | $2.8B |
| AMAZON.COM INCAMZN | 6 funds | $2.5B |
| MICROSOFT CORPMSFT | 6 funds | $1.9B |
| ALPHABET INC-CL AGOOGL | 6 funds | $1.7B |
| MICRON TECHNOLOGY INCMU | 6 funds | $1.6B |
| META PLATFORMS INC-CLASS AMETA | 6 funds | $1.6B |
| SS SPDR DOW JONES INDUS AVGDIA | 6 funds | $1.6B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 6 funds | $1.5B |
| BROADCOM INCAVGO | 6 funds | $1.5B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 6 funds | $1.2B |
| JPMORGAN CHASE & COJPM | 6 funds | $1.2B |
Ranked by how many of MTNB'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 MTNB. 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.