Westlake Chemical Partners LP - Limited Partnership
US ˙ NYSE ˙ US9604171036

SecurityWLKP / Westlake Chemical Partners LP - Limited Partnership
InstitutionInvesco Ltd.
Latest Disclosed Ownership5,264,187 shares
Ownership 14.90%
Invesco Ltd. ownership in WLKP / Westlake Chemical Partners LP - Limited Partnership

2024-02-12 - Invesco Ltd. has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 5,264,187 shares of Westlake Chemical Partners LP - Limited Partnership (US:WLKP). This represents 14.9 percent ownership of the company. In their previous filing dated 2023-02-10 , Invesco Ltd. had reported owning 5,451,790 shares, indicating a decrease of -3.44 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2024-02-12 2024-02-12 13G/A 5,451,790 5,264,187 -3.44 14.90 -3.87
2023-02-10 2023-02-10 13G/A 5,834,104 5,451,790 -6.55 15.50 -6.63
2022-02-11 2022-02-11 13G/A 6,781,916 5,834,104 -13.98 16.60 -13.99
2021-02-12 2021-02-12 13G/A 6,927,699 6,781,916 -2.10 19.30 -2.03
2020-02-12 2020-02-12 13G/A 6,389,223 6,927,699 8.43 19.70 8.24
2019-06-10 2019-06-10 13G 6,389,223 18.20

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 4,972,812 0 0.00 109,849 16.26 0.0021
2026-02-19 2025-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 4,972,812 -55,912 -1.11 94,483 -10.49 0.0145
2025-11-13 2025-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,028,724 -169,788 -3.27 105,553 -8.08 0.0166
2025-08-13 2025-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,198,512 0 0.00 114,835 -4.33 0.0195
2025-05-12 2025-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,198,512 -80,000 -1.52 120,034 -1.73 0.0227
2025-02-13 2024-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,278,512 0 0.00 122,145 3.26 0.0226
2024-11-12 2024-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,278,512 0 0.00 118,291 -0.75 0.0228
2024-08-13 2024-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,278,512 6,488 0.12 119,189 1.84 0.0252
2024-05-14 2024-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,272,024 7,837 0.15 117,039 2.69 0.0251
2024-02-13 2023-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,264,187 8,173 0.16 113,970 -0.31 0.0271
2023-11-13 2023-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,256,014 -192,812 -3.54 114,318 -3.27 0.0308
2023-08-11 2023-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,448,826 -2,964 -0.05 118,185 -1.51 0.0310
2023-05-12 2023-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,451,790 0 0.00 119,994 -6.34 0.0335
2023-02-13 2022-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,451,790 135,642 2.55 128,117 12.09 0.0375
2022-11-14 2022-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,316,148 -143,752 -2.63 114,297 -15.96 0.0368
2022-08-15 2022-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,459,900 -244,723 -4.29 136,006 -11.96 0.0412
2022-05-16 2022-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,704,623 -129,481 -2.22 154,481 -1.42 0.0394
2022-02-14 2021-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,834,104 422,405 7.81 156,704 18.97 0.0378
2021-11-15 2021-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,411,699 -93,210 -1.69 131,721 -11.11 0.0334
2021-08-17 2021-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 5,504,909 -961,132 -14.86 148,192 -4.59 0.0364
2021-05-17 2021-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,466,041 -315,875 -4.66 155,314 -3.94 0.0414
2021-02-16 2020-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,781,916 347,995 5.41 161,681 34.02 0.0471
2020-11-16 2020-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,433,921 -300,815 -4.47 120,636 -5.43 0.0408
2020-08-14 2020-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,734,736 74,206 1.11 127,556 29.57 0.0456
2020-05-15 2020-03-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,660,530 -267,169 -3.86 98,443 -46.21 0.0414
2020-02-14 2019-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,927,699 650,224 10.36 183,030 25.46 0.0568
2019-11-14 2019-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,277,475 -95,637 -1.50 145,889 -6.91 0.0382
2019-08-14 2019-06-30 13F/A-1 WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,373,112 6,373,112 156,715 0.0403
2019-08-14 2019-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 6,373,112 6,373,112 156,715
2017-02-14 2016-12-31 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 0 -24,486 -100.00 0 -100.00
2016-11-14 2016-09-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 24,486 -2,624 -9.68 560 3.51 0.0002
2016-08-15 2016-06-30 13F WESTLAKE CHEM PARTNERS COM UNIT RP LP 960417103 27,110 27,110 0.00 541 0.0002
2015-05-15 2015-03-31 13F WESTLAKE CHEMICAL PARTNERS COMMON 960417103 0 -35,664 -100.00 0 -100.00
2015-02-13 2014-12-31 13F WESTLAKE CHEMICAL PARTNERS COMMON 960417103 35,664 1,375 4.01 1,034 4.02 0.0004
2014-11-14 2014-09-30 13F WESTLAKE CHEMICAL PARTNERS COMMON 960417103 34,289 34,289 994 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.