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 ONL 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/ONL"
Use Arkolith to show who owns ONL, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | PRIVATE MANAGEMENT GROUP INC | $11.6M | 5.4M | ▲+0.6% Added · +35K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $6.2M | 2.7M | ▲~0% Added · +3 sh | Q4 2025 | |
| 3 | J. Goldman & Co LP | $5.6M | 2.6M | ▲+21% Added · +458K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $5.1M | 2.4M | ▲New +2.4M sh | Q1 2026 | |
| 5 | RENAISSANCE TECHNOLOGIES LLC | $3.7M | 1.7M | ▲+1.2% Added · +20K sh | Q1 2026 | |
| 6 | BlackRock, Inc. | $3.1M | 1.4M | ▼−19% Reduced · −349K sh | Q1 2026 | |
| 7 | JANE STREET GROUP, LLC | $1.3M | 593K | ▼−35% Reduced · −316K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $1.3M | 591K | ▼−3.6% Reduced · −22K sh | Q1 2026 | |
| 9 | DIMENSIONAL FUND ADVISORS LP | $1.2M | 572K | —Held | Q1 2026 | |
| 10 | D. E. Shaw & Co., Inc. | $1.1M | 522K | ▼−12% Reduced · −70K sh | Q1 2026 | |
| 11 | MARSHALL WACE, LLP | $971K | 452K | ▲+89% Added · +213K sh | Q1 2026 | |
| 12 | TWO SIGMA INVESTMENTS, LP | $959K | 446K | ▲+16% Added · +60K sh | Q1 2026 | |
| 13 | MORGAN STANLEY | $772K | 359K | ▼−30% Reduced · −157K sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $678K | 315K | ▲+0.6% Added · +2K sh | Q1 2026 | |
| 15 | VANGUARD FIDUCIARY TRUST CO | $673K | 313K | ▲New +313K sh | Q1 2026 | |
| 16 | RAYMOND JAMES FINANCIAL INC | $645K | 300K | ▲+8.2% Added · +23K sh | Q1 2026 | |
| 17 | STATE STREET CORP | $516K | 238K | ▼−6.9% Reduced · −18K sh | Q1 2026 | |
| 18 | MILLENNIUM MANAGEMENT LLC | $484K | 225K | ▼−47% Reduced · −202K sh | Q1 2026 | |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $455K | 211K | ▼−38% Reduced · −131K sh | Q1 2026 | |
| 20 | 683 Capital Management, LLC | $447K | 208K | —Held | Q1 2026 | |
| 21 | CITADEL ADVISORS LLC | $311K | 145K | ▲+52% Added · +50K sh | Q1 2026 | |
| 22 | NORTHERN TRUST CORP | $257K | 119K | ▲+7.5% Added · +8K sh | Q1 2026 | |
| 23 | XTX Topco Ltd | $240K | 112K | ▲+677% Added · +97K sh | Q1 2026 | |
| 24 | NOMURA ASSET MANAGEMENT CO LTD | $198K | 92K | —Held | Q1 2026 | |
| 25 | GOLDMAN SACHS GROUP INC | $198K | 92K | ▼−14% Reduced · −15K 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 |
|---|---|---|---|---|---|
| Mar 12, 2026 | Hughes Paul C | General Counsel & Secretary | Grant (A) | 73K | $0 |
| Mar 12, 2026 | Schmidt Revea Lynn | See Remarks. | Grant (A) | 63K | $0 |
| Mar 12, 2026 | Brandon Gavin | See Remarks. | Grant (A) | 115K | $0 |
| Mar 12, 2026 | Day Christopher Haviland | See Remarks. | Grant (A) | 99K | $0 |
| Mar 12, 2026 | MCDOWELL PAUL H | See Remarks., Director | Grant (A) | 218K | $0 |
| Mar 7, 2026 | Brandon Gavin | See Remarks. | Tax withholding (F) | 3K | $8K |
| Mar 7, 2026 | Hughes Paul C | General Counsel & Secretary | Tax withholding (F) | 3K | $7K |
| Mar 7, 2026 | MCDOWELL PAUL H | See Remarks., Director | Tax withholding (F) | 10K | $25K |
| Mar 7, 2026 | Schmidt Revea Lynn | See Remarks. | Tax withholding (F) | 2K | $5K |
| Mar 7, 2026 | Day Christopher Haviland | See Remarks. | Tax withholding (F) | 2K | $6K |
| Mar 3, 2026 | MCDOWELL PAUL H | See Remarks., Director | Tax withholding (F) | 33K | $81K |
| Mar 3, 2026 | Day Christopher Haviland | See Remarks. | Tax withholding (F) | 8K | $19K |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 51 funds | $14.4B |
| ELI LILLY & COLLY | 51 funds | $4.2B |
| MICROSOFT CORPMSFT | 50 funds | $17.4B |
| ALPHABET INC-CL AGOOGL | 50 funds | $11.3B |
| META PLATFORMS INC-CLASS AMETA | 50 funds | $8.5B |
| MICRON TECHNOLOGY INCMU | 50 funds | $4.3B |
| COSTCO WHOLESALE CORPCOST | 50 funds | $3.5B |
| CHEVRON CORPCVX | 50 funds | $2.9B |
| BANK OF AMERICA CORPBAC | 50 funds | $1.6B |
| NVIDIA CORPNVDA | 49 funds | $25.8B |
| BROADCOM INCAVGO | 49 funds | $10.2B |
| TESLA INCTSLA | 49 funds | $5.0B |
Ranked by how many of ONL'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 ONL. 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.