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/WST/capital-change-brief"
Use Arkolith's capital_change_brief for WST. 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. | $1.7B | 6.8M | ▲+3.6% Added · +237K sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $1.2B | 4.7M | ▲New +4.7M sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.0B | 4.1M | ▲New +4.1M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $825.6M | 3.3M | ▲+1.3% Added · +42K sh | Q1 2026 | |
| 5 | Artisan Partners Limited Partnership | $666.2M | 2.7M | ▼−6.8% Reduced · −193K sh | Q1 2026 | |
| 6 | Bank of New York Mellon Corp | $618.0M | 2.5M | ▼−7.4% Reduced · −196K sh | Q1 2026 | |
| 7 | T. Rowe Price Investment Management, Inc. | Withheld | 2.3M | ▲+99% Added · +1.2M sh | Q1 2026 | |
| 8 | GENERATION INVESTMENT MANAGEMENT LLP | $562.4M | 2.2M | ▲+44% Added · +682K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $477.5M | 1.9M | ▲+2.3% Added · +43K sh | Q1 2026 | |
| 10 | MORGAN STANLEY | $365.5M | 1.5M | ▼−4.8% Reduced · −74K sh | Q1 2026 | |
| 11 | BROWN ADVISORY INC | $336.1M | 1.3M | ▼−31% Reduced · −603K sh | Q1 2026 | |
| 12 | Longview Partners (Guernsey) LTD | $329.7M | 1.3M | ▲+16% Added · +184K sh | Q1 2026 | |
| 13 | FMR LLC | $313.2M | 1.2M | ▲11× Added · +1.1M sh | Q1 2026 | |
| 14 | JPMORGAN CHASE & CO | $255.8M | 1.0M | ▲+279% Added · +768K sh | Q1 2026 | |
| 15 | NORGES BANK | $272.0M | 989K | ▲+7.7% Added · +71K sh | Q4 2025 | |
| 16 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $226.3M | 903K | ▼−0.3% Reduced · −3K sh | Q1 2026 | |
| 17 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | $215.1M | 858K | ▼−10% Reduced · −97K sh | Q1 2026 | |
| 18 | TD ASSET MANAGEMENT INC | $192.7M | 769K | ▲+27% Added · +163K sh | Q1 2026 | |
| 19 | NORTHERN TRUST CORP | $183.3M | 731K | ▲+0.7% Added · +5K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $182.4M | 728K | ▲+65% Added · +288K sh | Q1 2026 | |
| 21 | VAN ECK ASSOCIATES CORP | Withheld | 714K | ▼−0.3% Reduced · −3K sh | Q1 2026 | |
| 22 | JACOBS LEVY EQUITY MANAGEMENT, INC | $176.8M | 705K | ▲+10% Added · +66K sh | Q1 2026 | |
| 23 | ProShare Advisors LLC | $165.4M | 660K | ▲+12% Added · +73K sh | Q1 2026 | |
| 24 | Amundi | $161.4M | 644K | ▲+85% Added · +297K sh | Q1 2026 | |
| 25 | Findlay Park Partners LLP | $154.6M | 617K | ▼−7.5% Reduced · −50K 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 30, 2026 | HAUGEN JANET BRUTSCHEA | Director | Grant (A) | 46 | $17K |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Option exercise (M) | 474 | $0 |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Option exercise (M) | 296 | $0 |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Tax withholding (F) | 135 | $42K |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Option exercise (M) | 474 | — |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Tax withholding (F) | 84 | $26K |
| May 12, 2026 | Campbell Shane Alden | SVP, Proprietary Segment | Option exercise (M) | 296 | — |
| May 4, 2026 | BUTHMAN MARK A | Director | Grant (A) | 791 | $0 |
| May 4, 2026 | FRIEL ROBERT F | Director | Grant (A) | 791 | $0 |
| May 4, 2026 | Feehery William F | Director | Grant (A) | 791 | $0 |
| May 4, 2026 | Keller Deborah L | Director | Grant (A) | 791 | $0 |
| May 4, 2026 | Joseph Molly | Director | Grant (A) | 791 | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 267 funds | $274.5B |
| APPLE INCAAPL | 264 funds | $295.6B |
| AMAZON.COM INCAMZN | 263 funds | $203.4B |
| META PLATFORMS INC-CLASS AMETA | 263 funds | $110.9B |
| NVIDIA CORPNVDA | 262 funds | $383.1B |
| ALPHABET INC-CL AGOOGL | 262 funds | $177.0B |
| ELI LILLY & COLLY | 260 funds | $74.9B |
| BROADCOM INCAVGO | 259 funds | $151.1B |
| VISA INC-CLASS A SHARESV | 258 funds | $61.4B |
| MASTERCARD INC - AMA | 258 funds | $54.4B |
| COSTCO WHOLESALE CORPCOST | 255 funds | $43.9B |
| JPMORGAN CHASE & COJPM | 254 funds | $70.8B |
Ranked by how many of WST'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 WST. 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.