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 OPFI 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/OPFI"
Use Arkolith to show who owns OPFI, 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 | $17.1M | 1.6M | ▲+3.1% Added · +49K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $14.9M | 1.9M | ▼−2.6% Reduced · −53K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $9.1M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 4 | TWO SIGMA INVESTMENTS, LP | $8.5M | 1.1M | ▲+70% Added · +452K sh | Q1 2026 | |
| 5 | MORGAN STANLEY | $5.5M | 710K | ▼−21% Reduced · −190K sh | Q1 2026 | |
| 6 | JPMORGAN CHASE & CO | $5.1M | 665K | ▼−9.9% Reduced · −73K sh | Q1 2026 | |
| 7 | Nuveen, LLC | $5.0M | 653K | ▼−13% Reduced · −101K sh | Q1 2026 | |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $4.9M | 630K | ▲+2.3% Added · +14K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $4.7M | 611K | ▲+1.1% Added · +7K sh | Q1 2026 | |
| 10 | STATE STREET CORP | $4.1M | 536K | ▲+0.5% Added · +3K sh | Q1 2026 | |
| 11 | CITADEL ADVISORS LLC | $3.9M | 511K | ▼−10% Reduced · −58K sh | Q1 2026 | |
| 12 | TUDOR INVESTMENT CORP ET AL | $3.8M | 487K | ▼−6.7% Reduced · −35K sh | Q1 2026 | |
| 13 | Trexquant Investment LP | $3.4M | 447K | ▲+1.5% Added · +6K sh | Q1 2026 | |
| 14 | MILLENNIUM MANAGEMENT LLC | $3.4M | 442K | ▼−28% Reduced · −169K sh | Q1 2026 | |
| 15 | DIMENSIONAL FUND ADVISORS LP | $3.3M | 426K | ▲+50% Added · +142K sh | Q1 2026 | |
| 16 | UBS Group AG | $2.5M | 329K | ▼−71% Reduced · −807K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $2.5M | 329K | ▼−33% Reduced · −164K sh | Q1 2026 | |
| 18 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $1.6M | 212K | ▲+208% Added · +143K sh | Q1 2026 | |
| 19 | LPL Financial LLC | $1.6M | 211K | ▲+2.4% Added · +5K sh | Q1 2026 | |
| 20 | MARSHALL WACE, LLP | $1.6M | 205K | ▲New +205K sh | Q1 2026 | |
| 21 | NORTHERN TRUST CORP | $1.5M | 196K | ▲+2.8% Added · +5K sh | Q1 2026 | |
| 22 | VANGUARD FIDUCIARY TRUST CO | $1.5M | 189K | ▲New +189K sh | Q1 2026 | |
| 23 | BANK OF AMERICA CORP /DE/ | $1.4M | 180K | ▼−29% Reduced · −72K sh | Q1 2026 | |
| 24 | Kestra Advisory Services, LLC | $1.4M | 176K | ▲+53% Added · +61K sh | Q1 2026 | |
| 25 | Rockefeller Capital Management L.P. | $1.3M | 170K | ▲170× Added · +169K 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 15, 2026 | Moore Jocelyn | Director | Sell (S) | 39K | $325K |
| Jun 12, 2026 | McKay Christopher J. | Chief Risk & Analytics Officer | Sell (S) | 24K | $198K |
| Jun 9, 2026 | Zeeman Gregory T | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Moore Jocelyn | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Vennettilli David | Director | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Vennettilli David | Director | Grant (A) | 25K | $0 |
| Jun 9, 2026 | Favilla Christina M | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | SCHWARTZ THEODORE G | Director, 10% Owner | Grant (A) | 17K | $0 |
| Jun 8, 2026 | Favilla Christina M | Director | Sell (S) | 30K | $244K |
| Mar 12, 2026 | Moore Jocelyn | Director | Sell (S) | 8K | $70K |
| Feb 27, 2026 | Schwartz Todd G. | Chief Executive Officer, Director, 10% Owner | Disposed to issuer (D) | 10K | $0 |
| Feb 3, 2026 | Johnson Pamela D. | CFO | Tax withholding (F) | 541 | $5K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 51 funds | $21.5B |
| UNITEDHEALTH GROUP INCUNH | 51 funds | $2.4B |
| AMAZON.COM INCAMZN | 50 funds | $17.1B |
| BROADCOM INCAVGO | 50 funds | $12.3B |
| META PLATFORMS INC-CLASS AMETA | 50 funds | $9.7B |
| ELI LILLY & COLLY | 50 funds | $5.9B |
| VISA INC-CLASS A SHARESV | 50 funds | $5.4B |
| MICRON TECHNOLOGY INCMU | 50 funds | $4.7B |
| BOSTON SCIENTIFIC CORPBSX | 50 funds | $1.4B |
| APPLE INCAAPL | 49 funds | $22.3B |
| ALPHABET INC-CL AGOOGL | 49 funds | $13.7B |
| ALPHABET INC-CL CGOOG | 49 funds | $9.7B |
Ranked by how many of OPFI'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 OPFI. 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.