The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query WKC owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/WKC"
Use Arkolith to show who owns WKC, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $201.3M | 8.7M | ▲+3.0% Added · +255K sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $157.3M | 6.7M | ▲+0.9% Added · +62K sh | Q4 2025 | |
| 3 | BRANDES INVESTMENT PARTNERS, LP | $99.0M | 4.3M | ▲+12% Added · +444K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $93.3M | 4.0M | ▲+33% Added · +990K sh | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $89.4M | 3.9M | ▲New +3.9M sh | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $74.7M | 3.2M | ▼−15% Reduced · −592K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $51.4M | 2.2M | ▲New +2.2M sh | Q1 2026 | |
| 8 | AMERICAN CENTURY COMPANIES INC | $32.6M | 1.4M | ▲+17% Added · +205K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $31.0M | 1.3M | ▲+3.3% Added · +43K sh | Q1 2026 | |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $28.2M | 1.2M | ▼−7.4% Reduced · −98K sh | Q1 2026 | |
| 11 | MORGAN STANLEY | $20.1M | 870K | ▼−14% Reduced · −146K sh | Q1 2026 | |
| 12 | FMR LLC | $18.7M | 811K | ▲+18% Added · +126K sh | Q1 2026 | |
| 13 | JACOBS LEVY EQUITY MANAGEMENT, INC | $15.6M | 675K | ▼−38% Reduced · −421K sh | Q1 2026 | |
| 14 | BANK OF MONTREAL /CAN/ | $15.3M | 663K | ▲+5.1% Added · +32K sh | Q1 2026 | |
| 15 | WELLS FARGO & COMPANY/MN | $15.0M | 649K | ▼−1.5% Reduced · −10K sh | Q1 2026 | |
| 16 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $14.9M | 645K | ▲+235% Added · +452K sh | Q1 2026 | |
| 17 | MILLENNIUM MANAGEMENT LLC | $14.5M | 627K | ▲+208% Added · +423K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $14.0M | 605K | ▲+0.8% Added · +5K sh | Q1 2026 | |
| 19 | BANK OF AMERICA CORP /DE/ | $13.1M | 568K | ▼−6.9% Reduced · −42K sh | Q1 2026 | |
| 20 | Man Group plc | $10.4M | 450K | ▲+330% Added · +346K sh | Q1 2026 | |
| 21 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | $10.1M | 437K | ▲+0.9% Added · +4K sh | Q1 2026 | |
| 22 | Cambria Investment Management, L.P. | $10.1M | 437K | ▲+10% Added · +41K sh | Q1 2026 | |
| 23 | GLENMEDE TRUST CO NA | $9.2M | 399K | ▼−8.4% Reduced · −37K sh | Q1 2026 | |
| 24 | JPMORGAN CHASE & CO | $8.9M | 388K | ▼−4.8% Reduced · −20K sh | Q1 2026 | |
| 25 | UBS Group AG | $8.9M | 385K | ▲+70% Added · +159K 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 8, 2026 | KASBAR MICHAEL J | Executive Chairman, Director | Sell (S) | 19K | $582K |
| Jun 5, 2026 | KASBAR MICHAEL J | Executive Chairman, Director | Sell (S) | 700 | $21K |
| Mar 28, 2026 | RAU JOHN PETER | President | Tax withholding (F) | 3K | $61K |
| Mar 28, 2026 | Birns Ira M | Chief Executive Officer | Tax withholding (F) | 3K | $64K |
| Mar 28, 2026 | KASBAR MICHAEL J | Executive Chairman, Director | Tax withholding (F) | 9K | $209K |
| Mar 15, 2026 | Birns Ira M | Chief Executive Officer | Tax withholding (F) | 2K | $41K |
| Mar 15, 2026 | RAU JOHN PETER | President | Grant (A) | 32K | $0 |
| Mar 15, 2026 | RAU JOHN PETER | President | Tax withholding (F) | 2K | $41K |
| Mar 15, 2026 | RAU JOHN PETER | President | Tax withholding (F) | 2K | $48K |
| Mar 15, 2026 | Tejada Jose-Miguel | EVP, Chief Financial Officer | Grant (A) | 9K | $0 |
| Mar 15, 2026 | KASBAR MICHAEL J | Executive Chairman, Director | Tax withholding (F) | 10K | $225K |
| Mar 15, 2026 | KASBAR MICHAEL J | Executive Chairman, Director | Tax withholding (F) | 8K | $193K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 86 funds | $38.9B |
| BROADCOM INCAVGO | 85 funds | $21.8B |
| META PLATFORMS INC-CLASS AMETA | 85 funds | $17.6B |
| ELI LILLY & COLLY | 85 funds | $10.2B |
| MICRON TECHNOLOGY INCMU | 85 funds | $8.2B |
| COSTCO WHOLESALE CORPCOST | 85 funds | $6.6B |
| NVIDIA CORPNVDA | 84 funds | $58.9B |
| ALPHABET INC-CL AGOOGL | 84 funds | $25.4B |
| PALANTIR TECHNOLOGIES INC-APLTR | 84 funds | $4.8B |
| BANK OF AMERICA CORPBAC | 84 funds | $4.6B |
| UNITEDHEALTH GROUP INCUNH | 84 funds | $4.6B |
| AMAZON.COM INCAMZN | 83 funds | $27.6B |
Ranked by how many of WKC'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 WKC. 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.