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Westlake (WLK)
NYSE
$76.46-$1.50 (-1.92%)
Price as of Jun 23, 2026 4:10 PM EDT- $10.0BMarket Cap
- 8.77%1-Year Change
- Specialty ChemicalsIndustry
Westlake (WLK)
$76.46-$1.50 (-1.92%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
ORBIS ALLAN GRAY LTD | 4.13% | 5.3M | +906,884 (+17.13%) | Mar 31, 2026 |
CAPITAL WORLD INVESTORS | 3.29% | 4.2M | +2.0M (+48.44%) | Mar 31, 2026 |
VANGUARD GROUP INC | 3.06% | 3.9M | +477,698 (+12.19%) | Dec 31, 2025 |
BLACKROCK FUNDING, INC. /DE | 2.85% | 3.7M | +160,039 (+4.38%) | Dec 31, 2024 |
BLACKROCK INC. | 2.66% | 3.4M | -71,816 (-2.11%) | Jun 30, 2024 |
BLACKROCK, INC. | 2.40% | 3.1M | -182,346 (-5.92%) | Mar 31, 2026 |
PRICE T ROWE ASSOCIATES INC /MD/ | 1.88% | 2.4M | +198,742 (+8.26%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 33.96% | 43.5M | 0 (0.00%) | Mar 31, 2026 |
DELAWARE GROUP INCOME FUNDS | 12.37% | 15.9M | 0 (0.00%) | Jan 30, 2026 |
DELAWARE GROUP ADVISER FUNDS | 11.77% | 15.1M | 0 (0.00%) | Jan 30, 2026 |
VANGUARD FIXED INCOME SECURITIES FUNDS | 11.71% | 15.0M | 0 (0.00%) | Jan 31, 2026 |
PUTNAM INCOME FUND | 6.14% | 7.9M | 0 (0.00%) | Jan 31, 2023 |
BAIRD FUNDS INC | 4.68% | 6.0M | 0 (0.00%) | Mar 31, 2026 |
MASTER BOND LLC | 3.94% | 5.0M | 0 (0.00%) | Jun 28, 2024 |
Current Ownership Distribution
- Mutual Funds1.5B (67.86%)
- Institutions673.8M (29.97%)
- Insiders48.7M (2.17%)
- Other0 (0.00%)
Insider Transactions
- 2.17% (48.7M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 1Number of InsiderSelling (last 12 months)
- $138.1MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Baksht Jonathan SVP and CFO | Award | Jun 15, 2026 | $0.00 | 20,580 | $0.00 | 20,580 |
Gilson Jean-Marc President and CEO | Award | Feb 20, 2026 | $0.00 | 109,139 | $0.00 | 109,139 |
Bender Mark Steven EVP & CFO | Award | Feb 20, 2026 | $0.00 | 28,389 | $0.00 | 28,389 |
Ederington L. Benjamin EVP, Legal & External Affairs | Award | Feb 20, 2026 | $0.00 | 25,656 | $0.00 | 25,656 |
Holy Jeffrey Adam VP and CAO | Award | Feb 20, 2026 | $0.00 | 4,394 | $0.00 | 4,394 |
Buesinger Robert F. EVP, PEM Segment Head | Award | Feb 20, 2026 | $0.00 | 19,351 | $0.00 | 19,351 |
Patel Bhavesh V. | Award | Feb 20, 2026 | $0.00 | 1,852 | $0.00 | 1,852 |
Chao John Tsung-chen | Award | Feb 20, 2026 | $0.00 | 4,044 | $0.00 | 4,044 |
Holy Jeffrey Adam VP and CAO | Award | Feb 20, 2026 | $0.00 | 1,199 | $0.00 | 1,199 |
Chao Albert Executive Chairman | Award | Feb 20, 2026 | $0.00 | 54,763 | $0.00 | 54,763 |
Bender Mark Steven EVP & CFO | Award | Feb 20, 2026 | $0.00 | 7,747 | $0.00 | 7,747 |
Ederington L. Benjamin EVP, Legal & External Affairs | Award | Feb 20, 2026 | $0.00 | 7,002 | $0.00 | 7,002 |
Holy Jeffrey Adam VP and CAO | Award | Feb 20, 2026 | $0.00 | 2,540 | $0.00 | 2,540 |
Buesinger Robert F. EVP, PEM Segment Head | Award | Feb 20, 2026 | $0.00 | 5,281 | $0.00 | 5,281 |
Szwejbka Scott Thomas SVP, HIP Segment Head | Award | Feb 20, 2026 | $0.00 | 14,595 | $0.00 | 14,595 |
Chao John Tsung-chen | Award | Feb 20, 2026 | $0.00 | 1,104 | $0.00 | 1,104 |
Holy Jeffrey Adam VP and CAO | In Kind | Feb 20, 2026 | $7,622.10 | 81 | $94.10 | 5,124 |
Gilson Jean-Marc President and CEO | Award | Feb 20, 2026 | $0.00 | 29,784 | $0.00 | 29,784 |
Bender Mark Steven EVP & CFO | In Kind | Feb 20, 2026 | $41,874.06 | 445 | $94.10 | 61,842 |
Ederington L. Benjamin EVP, Legal & External Affairs | In Kind | Feb 20, 2026 | $33,594.41 | 357 | $94.10 | 80,158 |
Szwejbka Scott Thomas SVP, HIP Segment Head | Award | Feb 20, 2026 | $0.00 | 3,983 | $0.00 | 3,983 |
Buesinger Robert F. EVP, PEM Segment Head | In Kind | Feb 20, 2026 | $30,676.93 | 326 | $94.10 | 38,482 |
Szwejbka Scott Thomas SVP, HIP Segment Head | In Kind | Feb 20, 2026 | $8,563.10 | 91 | $94.10 | 13,773 |
Chao John Tsung-chen | Award | Feb 20, 2026 | $0.00 | 2,434 | $0.00 | 2,434 |
Chao Albert Executive Chairman | Award | Feb 20, 2026 | $0.00 | 14,945 | $0.00 | 14,945 |
Chao John Tsung-chen | In Kind | Feb 20, 2026 | $8,563.10 | 91 | $94.10 | 7,888 |
Chao Albert Executive Chairman | In Kind | Feb 20, 2026 | $235,346.60 | 2,501 | $94.10 | 642,880 |
Holy Jeffrey Adam VP and CAO | Award | Feb 19, 2026 | $0.00 | 264 | $0.00 | 5,205 |
Ederington L. Benjamin EVP, Legal & External Affairs | Award | Feb 19, 2026 | $0.00 | 1,425 | $0.00 | 80,515 |
Bender Mark Steven EVP & CFO | Award | Feb 19, 2026 | $0.00 | 1,777 | $0.00 | 62,287 |