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/COO/capital-change-brief"
Use Arkolith's capital_change_brief for COO. 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. | $1.2B | 16.6M | ▲+0.8% Added · +131K sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $909.4M | 12.7M | ▲New +12.7M sh | Q1 2026 | |
| 3 | T. Rowe Price Investment Management, Inc. | Withheld | 9.1M | ▲+0.1% Added · +13K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $626.9M | 8.8M | ▼−0.3% Reduced · −25K sh | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $623.6M | 8.7M | ▲New +8.7M sh | Q1 2026 | |
| 6 | BROWNING WEST LP | $499.0M | 7.0M | ▲+89% Added · +3.3M sh | Q1 2026 | |
| 7 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | $473.1M | 6.6M | ▼−8.1% Reduced · −582K sh | Q1 2026 | |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | $385.7M | 5.4M | ▼−11% Reduced · −635K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $378.3M | 5.3M | ▲+0.7% Added · +37K sh | Q1 2026 | |
| 10 | FRANKLIN RESOURCES INC | $348.0M | 4.9M | ▲+21% Added · +845K sh | Q1 2026 | |
| 11 | GENERATION INVESTMENT MANAGEMENT LLP | $328.9M | 4.6M | ▲+61% Added · +1.7M sh | Q1 2026 | |
| 12 | Longview Partners (Guernsey) LTD | $273.3M | 3.8M | ▲New +3.8M sh | Q1 2026 | |
| 13 | AQR CAPITAL MANAGEMENT LLC | $261.4M | 3.7M | ▲+125% Added · +2.1M sh | Q1 2026 | |
| 14 | JANA Partners Management, LP | $254.9M | 3.6M | ▲+1.3% Added · +46K sh | Q1 2026 | |
| 15 | UBS Group AG | $245.6M | 3.4M | ▲+95% Added · +1.7M sh | Q1 2026 | |
| 16 | DIAMOND HILL CAPITAL MANAGEMENT INC | $243.0M | 3.4M | ▲+3.4% Added · +110K sh | Q1 2026 | |
| 17 | Neuberger Berman Group LLC | $242.7M | 3.4M | ▼−6.7% Reduced · −244K sh | Q1 2026 | |
| 18 | JANUS HENDERSON GROUP PLC | $219.3M | 3.1M | ▼−1.3% Reduced · −39K sh | Q1 2026 | |
| 19 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $210.8M | 2.6M | ▼−7.0% Reduced · −198K sh | Q1 2026 | |
| 20 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $180.9M | 2.5M | ▼−1.3% Reduced · −33K sh | Q1 2026 | |
| 21 | LONDON CO OF VIRGINIA | $160.0M | 2.2M | ▲+7.8% Added · +163K sh | Q1 2026 | |
| 22 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $152.0M | 2.1M | ▲+0.8% Added · +18K sh | Q1 2026 | |
| 23 | DIMENSIONAL FUND ADVISORS LP | $147.9M | 2.1M | ▲+5.6% Added · +109K sh | Q1 2026 | |
| 24 | Sustainable Growth Advisers, LP | $146.9M | 2.1M | ▼−39% Reduced · −1.3M sh | Q1 2026 | |
| 25 | River Road Asset Management, LLC | $141.2M | 2.0M | ▲+25% Added · +392K 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 |
|---|---|---|---|---|---|
| Jul 1, 2026 | Keel Paul A | Director | Grant (A) | 3K | $0 |
| Apr 1, 2026 | WEISS ROBERT S | Director | Option exercise (M) | 4K | $0 |
| Apr 1, 2026 | WEISS ROBERT S | Director | Option exercise (M) | 4K | $0 |
| Apr 1, 2026 | WEISS ROBERT S | Director | Grant (A) | 4K | $0 |
| Apr 1, 2026 | Lucchese Cynthia L | Director | Option exercise (M) | 3K | $0 |
| Apr 1, 2026 | Lucchese Cynthia L | Director | Option exercise (M) | 3K | $0 |
| Apr 1, 2026 | Lucchese Cynthia L | Director | Grant (A) | 4K | $0 |
| Apr 1, 2026 | Rosebrough Walter M Jr | Director | Grant (A) | 4K | $0 |
| Apr 1, 2026 | MADDEN TERESA S | Director | Option exercise (M) | 3K | $0 |
| Apr 1, 2026 | MADDEN TERESA S | Director | Option exercise (M) | 3K | $0 |
| Apr 1, 2026 | MADDEN TERESA S | Director | Grant (A) | 4K | $0 |
| Apr 1, 2026 | Kurzius Lawrence Erik | Director | Option exercise (M) | 3K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 228 funds | $270.3B |
| AMAZON.COM INCAMZN | 225 funds | $198.1B |
| NVIDIA CORPNVDA | 224 funds | $371.9B |
| META PLATFORMS INC-CLASS AMETA | 221 funds | $107.7B |
| VISA INC-CLASS A SHARESV | 221 funds | $58.0B |
| ALPHABET INC-CL AGOOGL | 220 funds | $171.3B |
| ELI LILLY & COLLY | 220 funds | $71.5B |
| APPLE INCAAPL | 219 funds | $283.8B |
| BROADCOM INCAVGO | 218 funds | $144.5B |
| JPMORGAN CHASE & COJPM | 216 funds | $66.7B |
| COSTCO WHOLESALE CORPCOST | 216 funds | $38.8B |
| HOME DEPOT INCHD | 214 funds | $29.6B |
Ranked by how many of COO'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 COO. 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.