843 tracked 13F filers disclose a position in WRB as of the latest SEC 13F filings, a combined $18.1B 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 | 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 | →First observed position No prior filed position | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $977.6M | 14.8M | →First observed position No prior filed position | Q1 2026 | |
| 5 | STATE STREET CORP | $1.0B | 14.1M | ▼−1.9% Reduced · −279K sh | Q2 2026 | |
| 6 | MORGAN STANLEY | $690.1M | 10.4M | ▲+6.3% Added · +614K sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $588.5M | 8.3M | ▲+0.5% Added · +39K sh | Q2 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 Ltd. | $162.9M | 2.5M | ▼−31% Reduced · −1.1M sh | Q1 2026 | |
| 19 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $144.2M | 2.2M | ▼−2.0% Reduced · −44K sh | Q1 2026 | |
| 20 | Polar Capital Holdings Plc | $150.2M | 2.1M | ▼−6.4% Reduced · −145K sh | Q2 2026 | |
| 21 | ROYAL LONDON ASSET MANAGEMENT LTD | $149.2M | 2.1M | ▼−7.4% Reduced · −169K sh | Q2 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.
Last quarter, 0 funds opened a new position in WRB and 15 added to an existing one, while 28 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 | 532 funds | $311.9B |
| JPMORGAN CHASE & COJPM | 526 funds | $77.1B |
| AMAZON.COM INCAMZN | 523 funds | $233.6B |
| APPLE INCAAPL | 522 funds | $346.6B |
| ALPHABET INC-CL AGOOGL | 521 funds | $200.2B |
| NVIDIA CORPNVDA | 516 funds | $449.5B |
| VISA INC-CLASS A SHARESV | 509 funds | $73.1B |
| META PLATFORMS INC-CLASS AMETA | 507 funds | $129.5B |
| JOHNSON & JOHNSONJNJ | 505 funds | $53.7B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 504 funds | $45.9B |
| ALPHABET INC-CL CGOOG | 501 funds | $151.8B |
| ELI LILLY & COLLY | 499 funds | $87.6B |
Ranked by how many of WRB's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| 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 |
| Mar 2, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 101K | $7.4M |
| Mar 2, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 45K | $3.3M |
| Feb 27, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 147K | $10.5M |
| Feb 26, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 145K | $10.4M |
| Feb 26, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Buy (P) | 8K | $541K |
| Feb 25, 2026 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | Buy (P) | 14K | $1.0M |
| Feb 25, 2026 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | Buy (P) | 155K | $11.0M |
| Feb 24, 2026 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | Buy (P) | 103K | $7.3M |
| Feb 24, 2026 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | Buy (P) | 62K | $4.4M |
| Feb 23, 2026 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | Buy (P) | 16K | $1.2M |
| Class | 13F holders | Value held |
|---|---|---|
| WRBthis pagecs | 843 funds | $18.1B |
| WRB 5.1 12/30/59Preferred Stock | 3 funds | $588K |
| 084423870Common Stock | 1 funds | $3K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for WRB
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.
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.