117 tracked 13F filers disclose a position in OPRX as of the latest SEC 13F filings, a combined $71.4M in reported value. 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.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Whetstone Capital Advisors, LLC | $9.5M | 1.5M | —Held | Q1 2026 | |
| 2 | BlackRock, Inc. | $7.3M | 1.2M | ▼−2.6% Reduced · −31K sh | Q1 2026 | |
| 3 | Parkman Healthcare Partners LLC | $4.6M | 729K | ▲+35% Added · +191K sh | Q1 2026 | |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | $4.3M | 685K | →First observed position No prior filed position | Q1 2026 | |
| 5 | KENNEDY CAPITAL MANAGEMENT LLC | $4.1M | 656K | ▼−2.6% Reduced · −18K sh | Q1 2026 | |
| 6 | RICE HALL JAMES & ASSOCIATES, LLC | $3.6M | 634K | ▲+5.3% Added · +32K sh | Q2 2026 | |
| 7 | BLAIR WILLIAM & CO/IL | $3.5M | 608K | ▼−1.1% Reduced · −7K sh | Q2 2026 | |
| 8 | DIMENSIONAL FUND ADVISORS LP | $3.5M | 564K | ▲+22% Added · +103K sh | Q1 2026 | |
| 9 | GOLDMAN SACHS GROUP INC | $2.3M | 358K | ▲+182% Added · +231K sh | Q1 2026 | |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.1M | 331K | →First observed position No prior filed position | Q1 2026 | |
| 11 | AWM Investment Company, Inc. | $1.4M | 230K | —Held | Q1 2026 | |
| 12 | Invenomic Capital Management LP | $1.4M | 229K | ▲New +229K sh | Q1 2026 | |
| 13 | RENAISSANCE TECHNOLOGIES LLC | $1.4M | 217K | ▲+633% Added · +187K sh | Q1 2026 | |
| 14 | AQR CAPITAL MANAGEMENT LLC | $1.3M | 215K | ▲15× Added · +200K sh | Q1 2026 | |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | $1.2M | 207K | ▼−47% Reduced · −185K sh | Q2 2026 | |
| 16 | Squarepoint Ops LLC | $1.1M | 178K | ▼−14% Reduced · −29K sh | Q1 2026 | |
| 17 | P.A.W. CAPITAL CORP | $915K | 160K | ▲+78% Added · +70K sh | Q2 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 | →First observed position No prior filed position | 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.
Last quarter, 7 funds opened a new position in OPRX and 21 added to an existing one, while 13 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 51 funds | $98.2B |
| APPLE INCAAPL | 50 funds | $105.0B |
| ELI LILLY & COLLY | 49 funds | $28.4B |
| ALPHABET INC-CL CGOOG | 48 funds | $48.0B |
| JOHNSON & JOHNSONJNJ | 48 funds | $17.1B |
| AMAZON.COM INCAMZN | 47 funds | $71.5B |
| JPMORGAN CHASE & COJPM | 47 funds | $23.6B |
| ABBVIE INCABBV | 47 funds | $13.7B |
| BRISTOL-MYERS SQUIBB COBMY | 47 funds | $6.1B |
| NVIDIA CORPNVDA | 46 funds | $136.2B |
| ALPHABET INC-CL AGOOGL | 46 funds | $54.4B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 46 funds | $15.1B |
Ranked by how many of OPRX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Oct 3, 2025 | Silvestro Stephen L | Chief Executive Officer | Sell (S) | 2K | $30K |
| Aug 28, 2025 | Spangler Patrick D | Director | Sell (S) | 11K | $194K |
| Mar 14, 2025 | Lang James Paul | Director | Buy (P) | 321K | $2.4M |
| Dec 12, 2024 | FEBBO WILLIAM J | CEO, Director | Buy (P) | 20K | $100K |
| Jan 9, 2024 | Odence-Ford Marion | General Counsel and CCO | Sell (S) | 4K | $61K |
| Aug 26, 2022 | Odence-Ford Marion | General Counsel and CCO | Buy (P) | 1K | $16K |
| Aug 22, 2022 | FEBBO WILLIAM J | CEO, Director | Buy (P) | 11K | $164K |
| Aug 19, 2022 | FEBBO WILLIAM J | CEO, Director | Buy (P) | 5K | $87K |
| Aug 19, 2022 | Lang James Paul | Director | Buy (P) | 6K | $99K |
| Aug 16, 2022 | Vos Ellen O'Connor | Director | Buy (P) | 500 | $8K |
| Aug 16, 2022 | Silvestro Stephen L | CCO | Buy (P) | 3K | $50K |
| Aug 15, 2022 | Stelmakh Edward | CFO/COO | Buy (P) | 3K | $46K |
Connected entities for OPRX
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/OPRX/capital-change-brief"
Use Arkolith's capital_change_brief for OPRX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
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.