Among active 13F managers last quarter, 1 opened and none reduced or exited; the largest holder to move was Citadel Advisors LLC (new position). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
3 tracked 13F filers disclose a position in SYNX as of the latest SEC 13F filings, a combined $66K 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 | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Citadel Advisors LLC | 49K | $51K | ▲New +49K sh | Q2 2026 | |
| 2 | Jane Street Group, LLC | 14K | $14K | ▲New +14K sh | Q1 2026 | |
| 3 | UBS Group AG | 2K | $2K | ▲New +2K 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, 1 fund opened a new position in SYNX, while none reduced or exited. 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 | Their position there |
|---|---|---|
| Ishares Core S&P 500 ETFIVV | 1 funds | $13.2B |
| Amazon.com IncAMZN | 1 funds | $2.6B |
| Nvidia CorpNVDA | 1 funds | $2.4B |
| Apple IncAAPL | 1 funds | $2.1B |
| Microsoft CorpMSFT | 1 funds | $1.4B |
| Electronic Arts IncEA | 1 funds | $1.2B |
| Warner Bros Discovery IncWBD | 1 funds | $1.2B |
| Eli Lilly & CoLLY | 1 funds | $1.1B |
| Broadcom IncAVGO | 1 funds | $1.1B |
| Alphabet Inc-CL AGOOGL | 1 funds | $1.1B |
| BlackRock IncBLK | 1 funds | $1.1B |
| Advanced Micro DevicesAMD | 1 funds | $929.1M |
Ranked by how many of SYNX's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SYNX.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jan 30, 2009 | Firecom Inc | 10% Owner | Buy (P) | 490K | $294K |
| Jun 10, 2008 | Firecom Inc | 10% Owner | Buy (P) | 226K | $621K |
| Jun 9, 2008 | Tamkin Daniel S | Former Chief Executive Officer, Director | Sell (S) | 225K | $620K |
| Jun 12, 2007 | Koenig Albert S | President Casey Systems Inc. | Buy (P) | 7K | $14K |
| Jun 8, 2007 | Tamkin Daniel S | Chief Executive Officer, Director | Buy (P) 2 lots, same day | 15K | $29K |
| Jun 7, 2007 | Tamkin Daniel S | Chief Executive Officer, Director | Buy (P) | 4K | $7K |
| Jun 6, 2007 | Koenig Albert S | President Casey Systems Inc. | Buy (P) | 3K | $5K |
| Jun 1, 2007 | Koenig Albert S | President Casey Systems Inc. | Buy (P) | 3K | $6K |
| May 21, 2007 | Koenig Albert S | President Casey Systems Inc. | Buy (P) | 7K | $13K |
| Jan 24, 2007 | Genterra Inc | 10% Owner | Sell (S) | 890K | $2.4M |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 0 | 0 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for SYNX
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/SYNX/capital-change-brief"
Use Arkolith's capital_change_brief for SYNX. 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 SYNX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.