306 tracked 13F filers disclose a position in WLK as of the latest SEC 13F filings, a combined $3.7B 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 | BlackRock, Inc. | $359.7M | 3.1M | ▼−5.6% Reduced · −182K sh | Q1 2026 | |
| 2 | PRICE T ROWE ASSOCIATES INC /MD/ | $281.2M | 2.4M | ▲+9.0% Added · +199K sh | Q1 2026 | |
| 3 | Orbis Allan Gray Ltd | $152.2M | 2.1M | ▼−61% Reduced · −3.2M sh | Q2 2026 | |
| 4 | BRANDES INVESTMENT PARTNERS, LP | $215.3M | 1.8M | ▲+10% Added · +172K sh | Q1 2026 | |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $206.7M | 1.8M | →First observed position No prior filed position | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $171.3M | 1.5M | ▼−22% Reduced · −420K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $170.0M | 1.5M | →First observed position No prior filed position | Q1 2026 | |
| 8 | STATE STREET CORP | $106.1M | 1.5M | ▲+5.3% Added · +73K sh | Q2 2026 | |
| 9 | GOLDMAN SACHS GROUP INC | $162.8M | 1.4M | ▲+85% Added · +639K sh | Q1 2026 | |
| 10 | FMR LLC | $153.3M | 1.3M | ▲+474% Added · +1.1M sh | Q1 2026 | |
| 11 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $114.6M | 981K | ▲+6.1% Added · +57K sh | Q1 2026 | |
| 12 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $110.3M | 944K | ▲+7.7% Added · +67K sh | Q1 2026 | |
| 13 | UBS Group AG | $94.8M | 811K | ▲+25% Added · +163K sh | Q1 2026 | |
| 14 | Holocene Advisors, LP | $85.3M | 730K | ▼−40% Reduced · −491K sh | Q1 2026 | |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | $52.5M | 719K | ▲+17% Added · +104K sh | Q2 2026 | |
| 16 | CITADEL ADVISORS LLC | $83.6M | 716K | ▲+252% Added · +512K sh | Q1 2026 | |
| 17 | Nuveen, LLC | $66.0M | 565K | ▼−14% Reduced · −88K sh | Q1 2026 | |
| 18 | MORGAN STANLEY | $56.8M | 487K | ▼−36% Reduced · −273K sh | Q1 2026 | |
| 19 | SCHRODER INVESTMENT MANAGEMENT GROUP | $43.4M | 375K | ▲New +375K sh | Q1 2026 | |
| 20 | BALYASNY ASSET MANAGEMENT L.P. | $43.2M | 370K | ▲New +370K sh | Q1 2026 | |
| 21 | JACOBS LEVY EQUITY MANAGEMENT, INC | $40.8M | 349K | ▼−48% Reduced · −319K sh | Q1 2026 | |
| 22 | Woodline Partners LP | $39.4M | 337K | ▼−46% Reduced · −291K sh | Q1 2026 | |
| 23 | ExodusPoint Capital Management, LP | $23.9M | 327K | ▲Added Added · +327K sh | Q2 2026 | |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $36.4M | 312K | ▲+4.9% Added · +15K sh | Q1 2026 | |
| 25 | NEW YORK STATE COMMON RETIREMENT FUND | $36.2M | 310K | —Held | 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, 13 funds opened a new position in WLK and 23 added to an existing one, while 20 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 |
|---|---|---|
| META PLATFORMS INC-CLASS AMETA | 166 funds | $90.9B |
| AMAZON.COM INCAMZN | 164 funds | $152.7B |
| ELI LILLY & COLLY | 163 funds | $60.5B |
| NVIDIA CORPNVDA | 162 funds | $311.0B |
| MICROSOFT CORPMSFT | 162 funds | $209.0B |
| ALPHABET INC-CL AGOOGL | 160 funds | $121.1B |
| APPLE INCAAPL | 158 funds | $232.3B |
| CHEVRON CORPCVX | 158 funds | $20.2B |
| MICRON TECHNOLOGY INCMU | 157 funds | $32.5B |
| LAM RESEARCH CORPLRCX | 157 funds | $25.4B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 156 funds | $30.3B |
| NEWMONT CORPNEM | 156 funds | $9.9B |
Ranked by how many of WLK's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 11, 2026 | Chao Albert | Executive Chairman, Director | Sell (S) | 7K | $597K |
| Aug 11, 2026 | Chao Albert | Executive Chairman, Director | Sell (S) | 31K | $2.5M |
| Mar 27, 2026 | Bender Mark Steven | EVP & CFO | Sell (S) | 16K | $1.8M |
| Mar 27, 2026 | Buesinger Robert F. | EVP, PEM Segment Head | Sell (S) | 4K | $461K |
| Feb 27, 2026 | Bender Mark Steven | EVP & CFO | Sell (S) | 421 | $43K |
| Feb 27, 2026 | Bender Mark Steven | EVP & CFO | Sell (S) | 17K | $1.7M |
| Dec 22, 2025 | Chao Albert | Executive Chairman, Director | Sell (S) | 521 | $39K |
| Dec 22, 2025 | Chao Albert | Executive Chairman, Director | Sell (S) | 10K | $707K |
| Dec 22, 2025 | Chao Albert | Executive Chairman, Director | Sell (S) | 31K | $2.3M |
| May 27, 2025 | Buesinger Robert F. | EVP, PEM Segment Head | Sell (S) | 83 | $6K |
| Apr 22, 2025 | Buesinger Robert F. | EVP, PEM Segment Head | Buy (P) | 83 | $8K |
| Nov 29, 2024 | Chao David Tsung-Hung | Director | Sell (S) | 2K | $226K |
Connected entities for WLK
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/WLK/capital-change-brief"
Use Arkolith's capital_change_brief for WLK. 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 WLK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.