2 tracked 13F filers disclose a position in TARK as of the latest SEC 13F filings, a combined $943K 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 | Optiver Holding B.V. | $842K | 24K | ▲+567% Added · +20K sh | Q1 2026 | |
| 2 | SIMPLEX TRADING, LLC | $101K | 3K | ▲New +3K 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.
| Class | 13F holders | Value held |
|---|---|---|
| NXTEETF | 14 funds | $20.8M |
| SARKTRADR 1X SHORT | 12 funds | $10.6M |
| KNOFUND | 10 funds | $13.6M |
| NVDSTRADR 1.5X SHORT | 8 funds | $4.1M |
| WUGIETF | 6 funds | $2.4M |
| AAAETF | 4 funds | $706K |
| TARKthis pageTRADR 2X LONG IN | 2 funds | $943K |
| 46144X628EXCHANGE TRADED | 1 funds | $50 |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
No filings captured for this ticker in the live stream yet.
This ETF 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/TARK/capital-change-brief"
Use Arkolith's capital_change_brief for TARK. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + quarter-over-quarter ownership changes + end-of-day price history + the live filing stream, joined for TARK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.