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 OSS 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/OSS"
Use Arkolith to show who owns OSS, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $2.7M | 357K | ▲+145% Added · +211K sh | Q1 2026 | |
| 2 | Trexquant Investment LP | $1.6M | 218K | ▼−15% Reduced · −39K sh | Q1 2026 | |
| 3 | VANGUARD FIDUCIARY TRUST CO | $975K | 129K | ▲New +129K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $770K | 102K | ▲+20% Added · +17K sh | Q1 2026 | |
| 5 | 683 Capital Management, LLC | $454K | 60K | ▼−34% Reduced · −30K sh | Q1 2026 | |
| 6 | Hudson Bay Capital Management LP | $283K | 37K | ▲+14% Added · +5K sh | Q1 2026 | |
| 7 | Centiva Capital, LP | $255K | 34K | ▲+193% Added · +22K sh | Q1 2026 | |
| 8 | Schonfeld Strategic Advisors LLC | $223K | 29K | ▼−9.2% Reduced · −3K sh | Q1 2026 | |
| 9 | Engineers Gate Manager LP | $220K | 29K | ▼−14% Reduced · −5K sh | Q1 2026 | |
| 10 | MANGROVE PARTNERS IM, LLC | $181K | 24K | ▲New +24K sh | Q1 2026 | |
| 11 | OCCUDO QUANTITATIVE STRATEGIES LP | $130K | 14K | ▼−61% Reduced · −22K sh | Q1 2026 | |
| 12 | McAdam, LLC | $96K | 13K | ▼~0% Reduced · −1 sh | Q1 2026 | |
| 13 | CHOREO, LLC | $86K | 11K | ▲New +11K sh | Q1 2026 | |
| 14 | Smartleaf Asset Management LLC | $29K | 4K | —Held | Q1 2026 | |
| 15 | NewEdge Advisors, LLC | $23K | 3K | ▲New +3K sh | Q1 2026 | |
| 16 | Arax Advisory Partners | $22K | 2K | ▲+409% Added · +2K sh | Q1 2026 | |
| 17 | MAI Capital Management | $2K | 226 | ▲New +226 sh | Q1 2026 | |
| 18 | Steward Partners Investment Advisory, LLC | $2K | 200 | ▲New +200 sh | Q1 2026 | |
| 19 | Root Financial Partners, LLC | $492 | 65 | ▲New +65 sh | Q1 2026 | |
| 20 | SBI Securities Co., Ltd. | $106 | 14 | ▲14× Added · +13 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 |
|---|---|---|---|---|---|
| Jun 5, 2026 | KNOWLES MICHAEL | Chief Executive Officer, Director | Tax withholding (F) | 20K | $332K |
| Feb 15, 2026 | Ison James | CPO | Tax withholding (F) | 3K | $27K |
| Feb 15, 2026 | KNOWLES MICHAEL | Chief Executive Officer, Director | Tax withholding (F) | 7K | $58K |
| Feb 15, 2026 | Ison James | CPO | Gift (G) | 4K | $0 |
| Feb 15, 2026 | Ison James | CPO | Gift (G) | 4K | $0 |
| Feb 7, 2026 | Gabel Daniel G. | Chief Financial Officer | Grant (A) | 55K | $0 |
| Feb 7, 2026 | Ison James | CPO | Gift (G) | 8K | $0 |
| Feb 7, 2026 | Ison James | CPO | Gift (G) | 8K | $0 |
| Feb 7, 2026 | Ison James | CPO | Tax withholding (F) | 7K | $60K |
| Feb 7, 2026 | Ison James | CPO | Grant (A) | 34K | $0 |
| Feb 7, 2026 | KNOWLES MICHAEL | Chief Executive Officer, Director | Tax withholding (F) | 13K | $123K |
| Feb 7, 2026 | Gabel Daniel G. | Chief Financial Officer | Tax withholding (F) | 8K | $72K |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 19 funds | $4.1B |
| ALPHABET INC-CL AGOOGL | 19 funds | $2.6B |
| ELI LILLY & COLLY | 19 funds | $912.2M |
| WALMART INCWMT | 19 funds | $911.6M |
| CAPITAL ONE FINANCIAL CORPCOF | 19 funds | $529.4M |
| SERVICENOW INCNOW | 19 funds | $415.0M |
| S&P GLOBAL INCSPGI | 19 funds | $260.0M |
| NVIDIA CORPNVDA | 18 funds | $7.4B |
| APPLE INCAAPL | 18 funds | $5.1B |
| MICROSOFT CORPMSFT | 18 funds | $3.5B |
| META PLATFORMS INC-CLASS AMETA | 18 funds | $2.2B |
| TESLA INCTSLA | 18 funds | $2.2B |
Ranked by how many of OSS'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 OSS. 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.