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/WK/capital-change-brief"
Use Arkolith's capital_change_brief for WK. 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. | $276.5M | 4.6M | ▲+4.3% Added · +193K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $235.9M | 4.0M | ▲New +4.0M sh | Q1 2026 | |
| 3 | EMINENCE CAPITAL, LP | $150.3M | 2.5M | ▼−32% Reduced · −1.2M sh | Q1 2026 | |
| 4 | Jericho Capital Asset Management L.P. | $147.0M | 2.5M | ▲New +2.5M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $134.6M | 2.3M | ▲New +2.3M sh | Q1 2026 | |
| 6 | FMR LLC | $106.5M | 1.8M | ▲+29% Added · +396K sh | Q1 2026 | |
| 7 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $100.2M | 1.7M | ▲+44% Added · +510K sh | Q1 2026 | |
| 8 | STATE STREET CORP | $76.1M | 1.3M | ▲+2.9% Added · +36K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $73.2M | 1.2M | ▲+2.9% Added · +35K sh | Q1 2026 | |
| 10 | EDMOND DE ROTHSCHILD HOLDING S.A. | $72.8M | 1.2M | ▲+30% Added · +280K sh | Q1 2026 | |
| 11 | UBS Group AG | $67.3M | 1.1M | ▼−49% Reduced · −1.1M sh | Q1 2026 | |
| 12 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $66.2M | 1.1M | ▲+88% Added · +521K sh | Q1 2026 | |
| 13 | HAWK RIDGE CAPITAL MANAGEMENT LP | $65.1M | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 14 | Topline Capital Management, LLC | $62.6M | 1.1M | ▲+264% Added · +762K sh | Q1 2026 | |
| 15 | FULLER & THALER ASSET MANAGEMENT, INC. | $55.0M | 922K | ▲+3.2% Added · +28K sh | Q1 2026 | |
| 16 | FIRST TRUST ADVISORS LP | $51.5M | 863K | ▲+16% Added · +122K sh | Q1 2026 | |
| 17 | GOLDMAN SACHS GROUP INC | $48.4M | 812K | ▲+171% Added · +512K sh | Q1 2026 | |
| 18 | Conestoga Capital Advisors, LLC | $45.0M | 755K | ▼−30% Reduced · −329K sh | Q1 2026 | |
| 19 | MAIRS & POWER INC | $42.7M | 716K | ▼−1.7% Reduced · −12K sh | Q1 2026 | |
| 20 | CITADEL ADVISORS LLC | $41.3M | 692K | ▲+75% Added · +296K sh | Q1 2026 | |
| 21 | NORGES BANK | $53.4M | 619K | ▲+5.3% Added · +31K sh | Q4 2025 | |
| 22 | Squarepoint Ops LLC | $35.3M | 592K | ▲11× Added · +540K sh | Q1 2026 | |
| 23 | Irenic Capital Management LP | $32.9M | 552K | —Held | Q1 2026 | |
| 24 | PRICE T ROWE ASSOCIATES INC /MD/ | $32.1M | 539K | ▼−49% Reduced · −509K sh | Q1 2026 | |
| 25 | LOOMIS SAYLES & CO L P | $30.7M | 515K | ▲+14% Added · +61K 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 4, 2026 | Herz Robert H | Director | Sell (S) | 2K | $77K |
| Jun 1, 2026 | Herren Richard Scott | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | VANDERPLOEG MARTIN J. | Director | Tax withholding (F) | 29K | $1.5M |
| Jun 1, 2026 | VANDERPLOEG MARTIN J. | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | CROW MICHAEL M | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | Herz Robert H | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | Malik Astha | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | PEEK MARK S | Director | Grant (A) | 4K | — |
| Jun 1, 2026 | RADIA SUKU V. | Director | Grant (A) | 4K | — |
| May 29, 2026 | Herz Robert H | Director | Sell (S) | 1K | $50K |
| Apr 3, 2026 | Iskow Julie | President & CEO, Director | Tax withholding (F) | 8K | $455K |
| Mar 2, 2026 | Herren Richard Scott | Director | Grant (A) | 877 | — |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 106 funds | $43.5B |
| ALPHABET INC-CL AGOOGL | 105 funds | $27.9B |
| NVIDIA CORPNVDA | 103 funds | $62.9B |
| AMAZON.COM INCAMZN | 103 funds | $33.6B |
| META PLATFORMS INC-CLASS AMETA | 102 funds | $19.3B |
| APPLE INCAAPL | 101 funds | $49.5B |
| BROADCOM INCAVGO | 99 funds | $22.1B |
| ALPHABET INC-CL CGOOG | 99 funds | $21.2B |
| ELI LILLY & COLLY | 99 funds | $12.0B |
| COSTCO WHOLESALE CORPCOST | 99 funds | $8.0B |
| UNITEDHEALTH GROUP INCUNH | 99 funds | $4.4B |
| MICRON TECHNOLOGY INCMU | 98 funds | $8.1B |
Ranked by how many of WK'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 WK. 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.