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/WRB/capital-change-brief"
Use Arkolith's capital_change_brief for WRB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | MITSUI SUMITOMO INSURANCE CO LTD | $3.9B | 58.8M | ▲+16% Added · +8.3M sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $1.5B | 23.3M | ▼−7.1% Reduced · −1.8M sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $1.3B | 18.9M | ▲New +18.9M sh | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $977.6M | 14.8M | ▲New +14.8M sh | Q1 2026 | |
| 5 | STATE STREET CORP | $954.8M | 14.4M | ▼−3.4% Reduced · −511K sh | Q1 2026 | |
| 6 | MORGAN STANLEY | $690.1M | 10.4M | ▲+6.3% Added · +614K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $549.2M | 8.2M | ▼−1.4% Reduced · −119K sh | Q1 2026 | |
| 8 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | $515.1M | 7.8M | ▼−11% Reduced · −937K sh | Q1 2026 | |
| 9 | NORGES BANK | $435.8M | 6.2M | ▲+24% Added · +1.2M sh | Q4 2025 | |
| 10 | FIRST TRUST ADVISORS LP | $263.3M | 4.0M | ▲+11% Added · +378K sh | Q1 2026 | |
| 11 | WELLS FARGO & COMPANY/MN | $251.2M | 3.8M | ▼−5.0% Reduced · −201K sh | Q1 2026 | |
| 12 | DIMENSIONAL FUND ADVISORS LP | $249.8M | 3.8M | ▲+3.6% Added · +130K sh | Q1 2026 | |
| 13 | JPMORGAN CHASE & CO | $216.9M | 3.3M | ▲+11% Added · +314K sh | Q1 2026 | |
| 14 | UBS Group AG | $216.6M | 3.3M | ▼−6.8% Reduced · −238K sh | Q1 2026 | |
| 15 | BANK OF AMERICA CORP /DE/ | $192.5M | 2.9M | ▲+23% Added · +551K sh | Q1 2026 | |
| 16 | GOLDMAN SACHS GROUP INC | $189.0M | 2.9M | ▲+3.5% Added · +95K sh | Q1 2026 | |
| 17 | NORTHERN TRUST CORP | $179.3M | 2.7M | ▼−6.3% Reduced · −183K sh | Q1 2026 | |
| 18 | JANUS HENDERSON GROUP PLC | $162.9M | 2.5M | ▼−31% Reduced · −1.1M sh | Q1 2026 | |
| 19 | ROYAL LONDON ASSET MANAGEMENT LTD | $151.4M | 2.3M | ▼−18% Reduced · −506K sh | Q1 2026 | |
| 20 | Polar Capital Holdings Plc | $150.8M | 2.3M | ▼−7.0% Reduced · −170K sh | Q1 2026 | |
| 21 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $144.2M | 2.2M | ▼−2.0% Reduced · −44K sh | Q1 2026 | |
| 22 | Bank of New York Mellon Corp | $134.8M | 2.0M | ▼−7.6% Reduced · −168K sh | Q1 2026 | |
| 23 | PRINCIPAL FINANCIAL GROUP INC | $127.2M | 1.9M | ▼−29% Reduced · −789K sh | Q1 2026 | |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $126.0M | 1.9M | ▲+1.3% Added · +24K sh | Q1 2026 | |
| 25 | Legal & General Group Plc | $124.0M | 1.9M | ▼−9.2% Reduced · −190K 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 3, 2026 | Mosley Daniel Lynn | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Farrell Mary C | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Rusbuldt Robert Alan | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Augostini Christopher L | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | BLAYLOCK RONALD E | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Talisman Jonathan | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | BERKLEY WILLIAM R | Executive Chairman, Director, 10% Owner | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Ferre Maria Luisa | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | Mattson Marie Angela | Director | Grant (A) | 3K | $0 |
| Jun 3, 2026 | BERKLEY WILLIAM R JR | President and CEO, Director | Grant (A) | 3K | $0 |
| Mar 3, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 73K | $5.3M |
| Mar 3, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 39K | $2.8M |
| Company | Co-held by | Combined value |
|---|---|---|
| JPMORGAN CHASE & COJPM | 297 funds | $65.5B |
| ALPHABET INC-CL AGOOGL | 293 funds | $166.5B |
| APPLE INCAAPL | 292 funds | $280.1B |
| MICROSOFT CORPMSFT | 292 funds | $263.6B |
| META PLATFORMS INC-CLASS AMETA | 291 funds | $110.1B |
| AMAZON.COM INCAMZN | 290 funds | $199.0B |
| NVIDIA CORPNVDA | 288 funds | $370.6B |
| ALPHABET INC-CL CGOOG | 287 funds | $125.4B |
| VISA INC-CLASS A SHARESV | 287 funds | $57.5B |
| MASTERCARD INC - AMA | 285 funds | $52.6B |
| ELI LILLY & COLLY | 283 funds | $71.3B |
| COSTCO WHOLESALE CORPCOST | 283 funds | $40.4B |
Ranked by how many of WRB'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 WRB. 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.