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WLKP · Westlake Chemical Partners LP · Holdings

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$21.48 -0.04 (-0.19%)
Market Cap
$758.49M
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.

Holders: 57
Total Value: $229,629,148
Total Shares: 10,315,776

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 57 13F filers · Δ vs Mar 31, 2026
Top Holder
48.2%
Sep 2023 → Jun 2026 · range 48.2% – 51.6%
−0.0 pts
Top 5
81.0%
Sep 2023 → Jun 2026 · range 80.5% – 85.4%
+0.2 pts
Top 10
89.8%
Sep 2023 → Jun 2026 · range 89.8% – 92.7%
−0.3 pts
HHI
2,688
Sep 2023 → Jun 2026 · range 2,685 – 3,060
Highly concentrated+2

Quarterly Activity

vs Mar 31, 2026
New
5
Increased
23
Decreased
12
Sold Out
6
Unchanged
17
Holder count: -1
Institutional value: +0.8%
Shares held: +0.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 59 of 59
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1604665 CUSIP 960417103 13F (30d) 3 filings 3 filers Visit website Investor relations