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 MDXH 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/MDXH"
Use Arkolith to show who owns MDXH, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | 683 Capital Management, LLC | $223K | 97K | ▼−9.9% Reduced · −11K sh | Q1 2026 | |
| 2 | Hudson Bay Capital Management LP | $144K | 62K | ▲+12% Added · +7K sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $137K | 60K | ▼−37% Reduced · −35K sh | Q1 2026 | |
| 4 | FIRST MANHATTAN CO. LLC. | $62K | 27K | —Held | Q1 2026 | |
| 5 | Point72 Asset Management, L.P. | $48K | 21K | ▼−68% Reduced · −44K sh | Q1 2026 | |
| 6 | Lido Advisors, LLC | $24K | 10K | ▲+1.5% Added · +158 sh | Q1 2026 | |
| 7 | SBI Securities Co., Ltd. | $67 | 29 | —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 |
|---|---|---|
| AMAZON.COM INCAMZN | 11 funds | $6.0B |
| ALPHABET INC-CL AGOOGL | 11 funds | $3.4B |
| UNITEDHEALTH GROUP INCUNH | 11 funds | $1.4B |
| ELI LILLY & COLLY | 11 funds | $1.1B |
| CAPITAL ONE FINANCIAL CORPCOF | 11 funds | $969.3M |
| BOOKING HOLDINGS INCBKNG | 11 funds | $712.0M |
| BUILDERS FIRSTSOURCE INCBLDR | 11 funds | $110.4M |
| NVIDIA CORPNVDA | 10 funds | $9.8B |
| MICROSOFT CORPMSFT | 10 funds | $5.4B |
| SS SPDR S&P 500 ETF TRUST-USSPY | 10 funds | $4.2B |
| BROADCOM INCAVGO | 10 funds | $3.9B |
| META PLATFORMS INC-CLASS AMETA | 10 funds | $2.8B |
Ranked by how many of MDXH'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 MDXH. 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.