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 OXBR 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/OXBR"
Use Arkolith to show who owns OXBR, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | GEODE CAPITAL MANAGEMENT, LLC | $196K | 166K | ▲+6.8% Added · +11K sh | Q1 2026 | |
| 2 | LPL Financial LLC | $119K | 101K | —Held | Q1 2026 | |
| 3 | Henrickson Nauta Wealth Advisors, Inc. | $70K | 68K | —Held | Q2 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $69K | 58K | ▲New +58K sh | Q1 2026 | |
| 5 | RENAISSANCE TECHNOLOGIES LLC | $39K | 33K | ▼−26% Reduced · −12K sh | Q1 2026 | |
| 6 | VANGUARD FIDUCIARY TRUST CO | $31K | 27K | ▲New +27K sh | Q1 2026 | |
| 7 | STATE STREET CORP | $18K | 16K | —Held | Q1 2026 | |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $17K | 15K | ▼−60% Reduced · −22K sh | Q1 2026 | |
| 9 | AMERIPRISE FINANCIAL INC | $12K | 10K | —Held | Q1 2026 | |
| 10 | MORGAN STANLEY | $11K | 9K | —Held | Q1 2026 | |
| 11 | Tower Research Capital LLC (TRC) | $5K | 4K | ▲+28% Added · +830 sh | Q1 2026 | |
| 12 | UBS Group AG | $250 | 212 | ▼−35% Reduced · −114 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Apr 16, 2026 | MARTIN ALLAN S. | 10% Owner | Gift (G) | 33K | $23K |
| Apr 16, 2026 | MARTIN ALLAN S. | 10% Owner | Gift (G) | 102K | $75K |
| Sep 16, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 4K | $11K |
| Aug 27, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 3K | $8K |
| Aug 27, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 7K | $16K |
| Jul 24, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 2K | $5K |
| Jul 23, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 2K | $5K |
| Jul 22, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 1K | $2K |
| Jul 18, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 2K | $5K |
| Jul 17, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 1K | $2K |
| Jul 14, 2025 | MARTIN ALLAN S. | 10% Owner | Sell (S) | 2K | $5K |
| Jul 11, 2025 | MARTIN ALLAN S. | 10% Owner | Buy (S) | 2K | $4K |
| Company | Co-held by | Combined value |
|---|---|---|
| SS SPDR S&P 500 ETF TRUST-USSPY | 8 funds | $32.3B |
| APPLE INCAAPL | 8 funds | $15.9B |
| MICROSOFT CORPMSFT | 8 funds | $12.2B |
| JOHNSON & JOHNSONJNJ | 8 funds | $9.6B |
| EXXON MOBIL CORPXOM | 8 funds | $9.4B |
| META PLATFORMS INC-CLASS AMETA | 8 funds | $9.1B |
| AMAZON.COM INCAMZN | 8 funds | $8.7B |
| JPMORGAN CHASE & COJPM | 8 funds | $8.2B |
| VANGUARD FTSE DEVELOPED ETFVEA | 8 funds | $7.7B |
| PROCTER & GAMBLE CO/THEPG | 8 funds | $7.0B |
| VERIZON COMMUNICATIONS INCVZ | 8 funds | $6.9B |
| ALPHABET INC-CL AGOOGL | 8 funds | $6.8B |
Ranked by how many of OXBR'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 OXBR. 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.