330 tracked 13F filers disclose a position in OII as of the latest SEC 13F filings, a combined $3.5B 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 | BlackRock, Inc. | $579.9M | 16.3M | ▲+2.1% Added · +345K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $268.8M | 7.6M | →First observed position No prior filed position | Q1 2026 | |
| 3 | BROWN ADVISORY INC | $205.3M | 5.8M | ▼−22% Reduced · −1.6M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $202.4M | 5.0M | ▼−0.8% Reduced · −40K sh | Q2 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $158.9M | 4.5M | →First observed position No prior filed position | Q1 2026 | |
| 6 | AMERICAN CENTURY COMPANIES INC | $133.6M | 3.8M | ▲+4.4% Added · +159K sh | Q1 2026 | |
| 7 | EARNEST PARTNERS LLC | $143.7M | 3.5M | ▼−3.7% Reduced · −137K sh | Q2 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 | Morgan Stanley Institutional Investment Advisors LLC | $124.2M | 3.1M | ▼−11% Reduced · −387K sh | Q3 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $115.1M | 2.8M | ▲+19% Added · +463K sh | Q2 2026 | |
| 12 | VAN ECK ASSOCIATES CORP | Withheld | 2.1M | ▲+37% Added · +561K sh | Q1 2026 | |
| 13 | Greenhouse Funds LLLP | $72.1M | 2.0M | ▼−18% Reduced · −436K sh | Q1 2026 | |
| 14 | LOOMIS SAYLES & CO L P | $60.3M | 1.7M | ▼−7.2% Reduced · −131K sh | Q1 2026 | |
| 15 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | $50.4M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $49.1M | 1.4M | ▼−4.1% Reduced · −60K sh | Q1 2026 | |
| 17 | PRICE T ROWE ASSOCIATES INC /MD/ | $45.9M | 1.3M | ▲13× Added · +1.2M sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $45.0M | 1.3M | ▲+4.2% Added · +51K sh | Q1 2026 | |
| 19 | ROYAL BANK OF CANADA | $37.2M | 1.0M | ▼−14% Reduced · −174K sh | Q1 2026 | |
| 20 | MORGAN STANLEY | $36.9M | 1.0M | ▼−0.1% Reduced · −720 sh | Q1 2026 | |
| 21 | GOLDMAN SACHS GROUP INC | $35.5M | 1000K | ▼−21% Reduced · −274K sh | Q1 2026 | |
| 22 | Boston Partners | $30.3M | 855K | ▲New +855K sh | Q1 2026 | |
| 23 | FRANKLIN RESOURCES INC | $29.4M | 828K | ▲+86% Added · +382K sh | Q1 2026 | |
| 24 | Fisher Asset Management, LLC | $28.1M | 792K | ▼−0.1% Reduced · −829 sh | Q1 2026 | |
| 25 | Ranger Investment Management, L.P. | $31.5M | 778K | ▼−2.4% Reduced · −19K sh | Q2 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 OII and 25 added to an existing one, while 29 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 | 174 funds | $253.2B |
| AMAZON.COM INCAMZN | 173 funds | $189.4B |
| NVIDIA CORPNVDA | 172 funds | $372.2B |
| APPLE INCAAPL | 172 funds | $275.9B |
| ALPHABET INC-CL AGOOGL | 171 funds | $160.4B |
| META PLATFORMS INC-CLASS AMETA | 171 funds | $110.7B |
| ELI LILLY & COLLY | 170 funds | $74.9B |
| BROADCOM INCAVGO | 168 funds | $143.4B |
| ALPHABET INC-CL CGOOG | 167 funds | $111.3B |
| LAM RESEARCH CORPLRCX | 167 funds | $31.0B |
| COSTCO WHOLESALE CORPCOST | 166 funds | $36.0B |
| CHEVRON CORPCVX | 166 funds | $31.1B |
Ranked by how many of OII's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 7, 2026 | MURPHY PAUL B JR | Director | Sell (S) | 10K | $484K |
| Jul 30, 2026 | DYER CHRISTOPHER J | SVP, OPGroup | Sell (S) | 1K | $57K |
| Jul 30, 2026 | MCEVOY M KEVIN | Director | Sell (S) | 3K | $144K |
| Jul 30, 2026 | Childress Earl | SVP, Chief Commercial Ofc. | Sell (S) | 13K | $593K |
| 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 13, 2026 | MCDONALD MARTIN J | SVP, Subsea Robotics | Sell (S) | 44K | $1.7M |
| May 12, 2026 | MCDONALD MARTIN J | SVP, Subsea Robotics | Sell (S) | 26K | $999K |
| Mar 11, 2026 | MCEVOY M KEVIN | Director | Sell (S) | 26K | $906K |
| Feb 26, 2026 | GRANATO LEONARDO P | SVP, IMDS | Sell (S) | 202 | $8K |
| Feb 26, 2026 | GRANATO LEONARDO P | SVP, IMDS | Sell (S) | 1K | $46K |
| Feb 26, 2026 | Kriendler Holly | SVP, Chief H.R. Officer | Sell (S) | 6K | $216K |
Connected entities for OII
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.
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.