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/OII/capital-change-brief"
Use Arkolith's capital_change_brief for OII. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $579.9M | 16.3M | ▲+2.1% Added · +345K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $268.8M | 7.6M | ▲New +7.6M sh | Q1 2026 | |
| 3 | BROWN ADVISORY INC | $205.3M | 5.8M | ▼−22% Reduced · −1.6M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $178.6M | 5.0M | ▲+8.3% Added · +387K sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $158.9M | 4.5M | ▲New +4.5M sh | Q1 2026 | |
| 6 | AMERICAN CENTURY COMPANIES INC | $133.6M | 3.8M | ▲+4.4% Added · +159K sh | Q1 2026 | |
| 7 | EARNEST PARTNERS LLC | $130.7M | 3.7M | ▼−2.8% Reduced · −107K sh | Q1 2026 | |
| 8 | DIMENSIONAL FUND ADVISORS LP | $122.8M | 3.5M | ▼−0.4% Reduced · −15K sh | Q1 2026 | |
| 9 | Neuberger Berman Group LLC | $114.2M | 3.2M | ▼−3.5% Reduced · −117K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $84.3M | 2.4M | ▲+3.1% Added · +72K sh | Q1 2026 | |
| 11 | VAN ECK ASSOCIATES CORP | Withheld | 2.1M | ▲+37% Added · +561K sh | Q1 2026 | |
| 12 | Greenhouse Funds LLLP | $72.1M | 2.0M | ▼−18% Reduced · −436K sh | Q1 2026 | |
| 13 | LOOMIS SAYLES & CO L P | $60.3M | 1.7M | ▼−7.2% Reduced · −131K sh | Q1 2026 | |
| 14 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | $50.4M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $49.1M | 1.4M | ▼−4.1% Reduced · −60K sh | Q1 2026 | |
| 16 | PRICE T ROWE ASSOCIATES INC /MD/ | $45.9M | 1.3M | ▲13× Added · +1.2M sh | Q1 2026 | |
| 17 | NORTHERN TRUST CORP | $45.0M | 1.3M | ▲+4.2% Added · +51K sh | Q1 2026 | |
| 18 | ROYAL BANK OF CANADA | $37.2M | 1.0M | ▼−14% Reduced · −174K sh | Q1 2026 | |
| 19 | MORGAN STANLEY | $36.9M | 1.0M | ▼−0.1% Reduced · −720 sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $35.5M | 1000K | ▼−21% Reduced · −274K sh | Q1 2026 | |
| 21 | Boston Partners | $30.3M | 855K | ▲New +855K sh | Q1 2026 | |
| 22 | FRANKLIN RESOURCES INC | $29.4M | 828K | ▲+86% Added · +382K sh | Q1 2026 | |
| 23 | Ranger Investment Management, L.P. | $28.3M | 797K | ▼−0.8% Reduced · −6K sh | Q1 2026 | |
| 24 | Fisher Asset Management, LLC | $28.1M | 792K | ▼−0.1% Reduced · −829 sh | Q1 2026 | |
| 25 | Bank of New York Mellon Corp | $26.8M | 755K | ▼−1.9% 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 |
|---|---|---|---|---|---|
| Jun 30, 2026 | GOODWIN DEANNA L | Director | Sell (S) | 7K | $285K |
| May 18, 2026 | LARSON RODERICK A. | President and CEO, Director | Sell (S) | 5K | $191K |
| May 15, 2026 | Poddar Reema | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | MCEVOY M KEVIN | Director | Grant (A) | 7K | $0 |
| May 15, 2026 | MURPHY PAUL B JR | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | WEBSTER STEVEN A | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | Reinhardsen Jon Erik | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | GOODWIN DEANNA L | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | Jenkins Roger W. | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | Beachy Karen H | Director | Grant (A) | 5K | $0 |
| May 15, 2026 | BERRY WILLIAM B | Director | Grant (A) | 5K | $0 |
| May 13, 2026 | MCDONALD MARTIN J | SVP, Subsea Robotics | Sell (S) | 44K | $1.7M |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 114 funds | $45.2B |
| AMAZON.COM INCAMZN | 114 funds | $33.6B |
| BROADCOM INCAVGO | 114 funds | $23.3B |
| ELI LILLY & COLLY | 114 funds | $11.8B |
| META PLATFORMS INC-CLASS AMETA | 113 funds | $20.6B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 113 funds | $10.3B |
| VISA INC-CLASS A SHARESV | 113 funds | $10.0B |
| COSTCO WHOLESALE CORPCOST | 113 funds | $8.4B |
| UNITEDHEALTH GROUP INCUNH | 113 funds | $4.1B |
| NVIDIA CORPNVDA | 112 funds | $64.1B |
| APPLE INCAAPL | 112 funds | $55.1B |
| ALPHABET INC-CL AGOOGL | 112 funds | $30.2B |
Ranked by how many of OII'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 OII. 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.