8 tracked 13F filers disclose a position in MYSZ as of the latest SEC 13F filings, a combined $45K in reported value. 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.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Williams & Novak, LLC | $13K | 28K | ▲+3.6% Added · +975 sh | Q2 2026 | |
| 2 | XTX Topco Ltd | $11K | 20K | ▼−3.4% Reduced · −689 sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $11K | 19K | ▲New +19K sh | Q1 2026 | |
| 4 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8K | 13K | ▲+9.0% Added · +1K sh | Q1 2026 | |
| 5 | UBS Group AG | $3K | 4K | ▲+108% Added · +2K sh | Q1 2026 | |
| 6 | MORGAN STANLEY | $294 | 509 | —Held | Q1 2026 | |
| 7 | SBI Securities Co., Ltd. | $11 | 25 | —Held | Q2 2026 | |
| 8 | Johnson Financial Group, Inc. | $1 | 1 | ▲New +1 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.
Last quarter, 2 funds opened a new position in MYSZ and 1 added to an existing one, while 1 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Dec 29, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 4K | $3K |
| Dec 1, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 3K | $2K |
| Nov 25, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 14K | $13K |
| Nov 24, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 235 | $209 |
| Nov 20, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 11K | $8K |
| Nov 20, 2025 | Luzon Ronen | Chief Executive Officer, Director | Buy (P) | 3K | $2K |
| Dec 30, 2024 | AVATAR SECURITIES, LLC | 10% Owner | Sell (S) | 100 | $548 |
| Dec 30, 2024 | AVATAR SECURITIES, LLC | 10% Owner | Sell (S) | 121K | $585K |
| Dec 30, 2024 | Pardo Billy | CPO & COO | Sell (S) | 2K | $10K |
| Dec 30, 2024 | Pardo Billy | CPO & COO | Sell (S) | 2K | $11K |
| Dec 30, 2024 | Pardo Billy | CPO & COO | Sell (S) | 2K | $10K |
| Dec 30, 2024 | Pardo Billy | CPO & COO | Sell (S) | 2K | $10K |
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MYSZ/capital-change-brief"
Use Arkolith's capital_change_brief for MYSZ. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
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.