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 MYSZ 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/MYSZ"
Use Arkolith to show who owns MYSZ, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $11K | 19K | ▲New +19K sh | Q1 2026 | |
| 2 | SBI Securities Co., Ltd. | $14 | 25 | —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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 29, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 4K | $3K |
| Dec 15, 2025 | Luzon Ronen | Chief Executive Officer, Director | Grant (A) | 60K | $0 |
| Dec 15, 2025 | Cembrero Saralegui Borja | Chief Growth Officer | Grant (A) | 110K | $0 |
| Dec 15, 2025 | Luzon Ronen | Chief Executive Officer, Director | Grant (A) | 215K | $0 |
| Dec 15, 2025 | Zimmerman Guy | Director | Grant (A) | 15K | $0 |
| Dec 15, 2025 | Elmaliah Oren | Chief Financial Officer | Grant (A) | 30K | $0 |
| Dec 15, 2025 | Branitzky Oron | Director | Grant (A) | 15K | $0 |
| Dec 15, 2025 | Kaufman Arik | Director | Grant (A) | 15K | $0 |
| Dec 15, 2025 | Golan Roy | Director | Grant (A) | 15K | $0 |
| Dec 15, 2025 | Pardo Billy | CPO & COO | Grant (A) | 215K | $0 |
| Dec 15, 2025 | Pardo Billy | CPO & COO | Grant (A) | 60K | $0 |
| Dec 1, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 3K | $2K |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 4 funds | $3.8B |
| AMAZON.COM INCAMZN | 4 funds | $1.8B |
| MICRON TECHNOLOGY INCMU | 4 funds | $1.6B |
| SS SPDR DOW JONES INDUS AVGDIA | 4 funds | $1.6B |
| APPLE INCAAPL | 4 funds | $1.5B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 4 funds | $1.4B |
| META PLATFORMS INC-CLASS AMETA | 4 funds | $1.1B |
| MICROSOFT CORPMSFT | 4 funds | $1.1B |
| BROADCOM INCAVGO | 4 funds | $1.0B |
| ALPHABET INC-CL AGOOGL | 4 funds | $980.3M |
| TESLA INCTSLA | 4 funds | $900.1M |
| ALPHABET INC-CL CGOOG | 4 funds | $780.6M |
Ranked by how many of MYSZ'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 MYSZ. 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.