Who owns Westlake Corp (WLK)?
149 US mutual funds and ETFs from 78 fund families reported a position in WLK for the quarter ending 2026-06-30. Against their own report a quarter earlier, 45 raised shares, 16 opened a new position, 51 cut and 21 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 4 | 33.2% |
| Ishares Trust | 12 | 22.1% |
| T. Rowe Price Mid-Cap Value Fund, Inc. | 1 | 14.6% |
| Spdr Series Trust | 7 | 7.3% |
| New Perspective Fund | 1 | 3.1% |
| Janus Investment Fund | 1 | 2.9% |
Tracked managers holding WLK
None of the managers Prior Moves tracks on 13F reports WLK in its latest filing.
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about WLK. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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