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 OPRX 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/OPRX"
Use Arkolith to show who owns OPRX, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $13.9M | 1.1M | ▲+7.3% Added · +78K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $7.3M | 1.2M | ▼−2.6% Reduced · −31K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $4.3M | 685K | ▲New +685K sh | Q1 2026 | |
| 4 | KENNEDY CAPITAL MANAGEMENT LLC | $4.1M | 656K | ▼−2.6% Reduced · −18K sh | Q1 2026 | |
| 5 | BLAIR WILLIAM & CO/IL | $3.9M | 615K | ▲+5.6% Added · +32K sh | Q1 2026 | |
| 6 | RICE HALL JAMES & ASSOCIATES, LLC | $3.8M | 602K | ▲+1.9% Added · +11K sh | Q1 2026 | |
| 7 | DIMENSIONAL FUND ADVISORS LP | $3.5M | 564K | ▲+22% Added · +103K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $3.0M | 478K | ▲+0.1% Added · +249 sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $2.5M | 392K | ▼−1.1% Reduced · −4K sh | Q1 2026 | |
| 10 | GOLDMAN SACHS GROUP INC | $2.3M | 358K | ▲+182% Added · +231K sh | Q1 2026 | |
| 11 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.1M | 331K | ▲New +331K sh | Q1 2026 | |
| 12 | AWM Investment Company, Inc. | $1.4M | 230K | —Held | Q1 2026 | |
| 13 | Invenomic Capital Management LP | $1.4M | 229K | ▲New +229K sh | Q1 2026 | |
| 14 | RENAISSANCE TECHNOLOGIES LLC | $1.4M | 217K | ▲+633% Added · +187K sh | Q1 2026 | |
| 15 | AQR CAPITAL MANAGEMENT LLC | $1.3M | 215K | ▲15× Added · +200K sh | Q1 2026 | |
| 16 | SEGALL BRYANT & HAMILL, LLC | $1.2M | 189K | ▲New +189K sh | Q1 2026 | |
| 17 | Squarepoint Ops LLC | $1.1M | 178K | ▼−14% Reduced · −29K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $976K | 155K | ▼−1.0% Reduced · −2K sh | Q1 2026 | |
| 19 | D. E. Shaw & Co., Inc. | $898K | 143K | ▲+27% Added · +30K sh | Q1 2026 | |
| 20 | Trexquant Investment LP | $860K | 137K | ▲New +137K sh | Q1 2026 | |
| 21 | LPL Financial LLC | $814K | 130K | ▲+385% Added · +103K sh | Q1 2026 | |
| 22 | Russell Investments Group, Ltd. | $788K | 125K | ▼−57% Reduced · −164K sh | Q1 2026 | |
| 23 | Qube Research & Technologies Ltd | $760K | 121K | ▲+104% Added · +62K sh | Q1 2026 | |
| 24 | VANGUARD FIDUCIARY TRUST CO | $698K | 111K | ▲New +111K sh | Q1 2026 | |
| 25 | Bank of New York Mellon Corp | $643K | 102K | ▼−10% Reduced · −12K 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 9, 2026 | Lang James Paul | Director | Grant (A) | 35K | $0 |
| Jun 9, 2026 | Presti Mariyamma Varghese | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | KLEMA CATHY | Director | Grant (A) | 35K | $0 |
| May 1, 2026 | Presti Mariyamma Varghese | Director | Grant (A) | 13K | $0 |
| Feb 11, 2026 | Odence-Ford Marion | Chief Legal & Admin Officer | Option exercise (M) | 4K | — |
| Feb 11, 2026 | Odence-Ford Marion | Chief Legal & Admin Officer | Tax withholding (F) | 1K | $13K |
| Feb 11, 2026 | Odence-Ford Marion | Chief Legal & Admin Officer | Option exercise (M) | 4K | $0 |
| Dec 23, 2025 | Odence-Ford Marion | Chief Legal & Admin Officer | Tax withholding (F) | 4K | $52K |
| Dec 23, 2025 | Silvestro Stephen L | Chief Executive Officer | Tax withholding (F) | 3K | $43K |
| Dec 23, 2025 | Stelmakh Edward | Chief Finance & Strat Officer | Tax withholding (F) | 4K | $47K |
| Dec 23, 2025 | Besch Doug | Chief Product & Tech Officer | Tax withholding (F) | 4K | $52K |
| Dec 23, 2025 | Greco Theresa | Chief Commercial Officer | Tax withholding (F) | 1K | $18K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 37 funds | $11.9B |
| NVIDIA CORPNVDA | 36 funds | $17.9B |
| AMAZON.COM INCAMZN | 36 funds | $9.1B |
| ALPHABET INC-CL AGOOGL | 36 funds | $7.9B |
| META PLATFORMS INC-CLASS AMETA | 36 funds | $5.3B |
| JPMORGAN CHASE & COJPM | 36 funds | $4.0B |
| ELI LILLY & COLLY | 36 funds | $3.2B |
| VISA INC-CLASS A SHARESV | 36 funds | $2.7B |
| CHEVRON CORPCVX | 36 funds | $1.5B |
| COMCAST CORP-CLASS ACMCSA | 36 funds | $346.4M |
| APPLE INCAAPL | 35 funds | $14.6B |
| BROADCOM INCAVGO | 35 funds | $6.9B |
Ranked by how many of OPRX'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 OPRX. 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.