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WLKP · Westlake Chemical Partners LP

$21.86 -0.04 (-0.18%) At close · Jul 30
Market Cap
$765.89M
Shares
35.25M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 57
Total Value: $227,973,526
Total Shares: 10,318,396

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 58 13F filers
Top Holder
48.2%
Jun 2023 → Mar 2026 · range 42.2% – 51.0%
of institutional value
Top 5
80.8%
Jun 2023 → Mar 2026 · range 80.5% – 85.7%
of institutional value
Top 10
90.2%
Jun 2023 → Mar 2026 · range 89.9% – 92.7%
of institutional value
HHI
2,685
Jun 2023 → Mar 2026 · range 2,372 – 3,098
Highly concentrated
Showing 59 of 59
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1604665 CUSIP 960417103 13F (30d) 7 filings 7 filers Visit website Investor relations