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Of the 13 tracked institutions holding WLK, 5 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +5.3pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, WLK (WESTLAKE CORPORATION) is held with a combined value of $1.07B across 14,632,634 shares. The largest holder is VANGUARD GROUP INC with a position worth $289.65M. 2 funds opened new positions in the most recent quarter. 7 funds increased their holdings. 4 funds reduced their position.
Total Institutional Value
$1.07B
Total Shares Held
14,632,634
Institutional Holders
13
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $289.65M | 0.00% | +13.9% |
| 2 | BlackRock, Inc. | $240.47M | 0.00% | +7.0% |
| 3 | PRICE T ROWE ASSOCIATES INC /MD/ | $161.09M | 0.02% | -8.3% |
| 4 | AQR CAPITAL MANAGEMENT LLC | $114.64M | 0.04% | +503.9% |
| 5 | STATE STREET CORP | $106.10M | 0.00% | +5.3% |
| 6 | CITADEL ADVISORS LLC | $77.01M | 0.04% | +47.4% |
| 7 | MILLENNIUM MANAGEMENT LLC | $26.72M | 0.02% | +330.7% |
| 8 | FMR LLC | $26.37M | 0.00% | -72.5% |
| 9 | TWO SIGMA ADVISERS, LP | $10.70M | 0.02% | +96.3% |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | $10.35M | 0.00% | -92.1% |
| Member | Type | Date |
|---|---|---|
| David A Perdue , Jr | Sell | Aug 14, 2017 |
| David A Perdue , Jr | Sell | Aug 10, 2017 |
| David A Perdue , Jr | Sell | Aug 9, 2017 |
| David A Perdue , Jr | Sell |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of WLK with a position worth $289.65M, representing 0.00% of their portfolio. In total, 13 institutional investors hold WLK with a combined value of $1.07B.
In the most recent quarter, 2 funds opened a new position in WLK. Additionally, 7 increased their holdings and 4 reduced their positions.
Institutional investors hold $1.07B worth of WLK stock across 13 positions. The largest institutional holder is VANGUARD GROUP INC with $289.65M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For WLK, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their WLK positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Aug 8, 2017 |
| David A Perdue , Jr | Sell | Aug 4, 2017 |
| David A Perdue , Jr | Sell | Aug 3, 2017 |
| David A Perdue , Jr | Sell | Apr 27, 2017 |
| David A Perdue , Jr | Sell | Mar 23, 2017 |
Showing 8 of 22. STOCK Act disclosures lag up to 45 days.
Last Close
$78.93
2026-08-21
YTD
+6.4%
34% of 52-week range
