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 SPXU 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/SPXU"
Use Arkolith to show who owns SPXU, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Beacon Capital Management, Inc. | $638K | 11K | —Held | Q1 2026 | |
| 2 | GROUP ONE TRADING LLC | $364K | 6K | ▲New +6K sh | Q1 2026 | |
| 3 | DRW Securities, LLC | $351K | 6K | ▲New +6K sh | Q1 2026 | |
| 4 | NewEdge Advisors, LLC | $329K | 6K | ▲New +6K sh | Q1 2026 | |
| 5 | StoneX Group Inc. | $329K | 6K | ▲New +6K sh | Q1 2026 | |
| 6 | EFG International AG | $270K | 5K | ▲New +5K sh | Q1 2026 | |
| 7 | BEACON INVESTMENT ADVISORY SERVICES, INC. | $71K | 1K | ▲New +1K sh | Q1 2026 | |
| 8 | TD Waterhouse Canada Inc. | $47K | 850 | ▲+36% Added · +225 sh | Q1 2026 | |
| 9 | SBI Securities Co., Ltd. | $29K | 518 | ▼−6.8% Reduced · −38 sh | Q1 2026 | |
| 10 | MAI Capital Management | $13K | 221 | ▲New +221 sh | Q1 2026 | |
| 11 | MCF Advisors LLC | $57 | 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.
No Form 4 insider transactions on file yet.
| Class | 13F holders | Value held |
|---|---|---|
| SHmc | 84 funds | $317.5M |
| PSQSHORT QQQ | 46 funds | $232.2M |
| QIDULTRASHORT QQQ | 26 funds | $28.6M |
| ITWORUSSELL 2000 HIG | 21 funds | $81.4M |
| BITUmc | 17 funds | $1.6M |
| UXRPULTRA XRP ETF | 16 funds | $770K |
| ETHTULTRA ETHER ETF | 15 funds | $3.5M |
| EETHETHER ETF | 10 funds | $7.0M |
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.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SPXU. 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.