WLK — WESTLAKE CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
28
all time
Members · 12m
0
0 buys · 0 sells · by trade date
Latest filing
07-13
2021-07-13
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
3
13F holders
309
all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 28Institutional 309

Congress · disclosure timeline

By trade date · 24 months · 0 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

No dated WLK rows fall inside the trailing 24 months by trade date.

Members active in WLK

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).

No member disclosed WLK in the trailing 12 months.

Congressional disclosures

Newest filed firstAll 28 rows ↗
Latest congressional filings mentioning WLK
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2021-07-13Susie Lee D–NV-3SELL JT (jointly owned)Traded 06-10 +33d$1K–$15K
2021-03-16Peter Meijer R–MI-3SELLTraded 02-16 +28d$1K–$15K
2021-01-11Susie Lee D–NV-3BUY JT (jointly owned)Traded 2020-12-16 +26d$1K–$15K
2021-01-11Susie Lee D–NV-3BUY JT (jointly owned)Traded 2020-12-10 +32d$1K–$15K
2020-08-24James Comer R–KY-1SELLTraded 08-06 +18d$1K–$15K
2018-05-04David Perdue R–GABUY JT (jointly owned)Traded 2016-01-29 LATE·826d$1K–$15Kamendment pending
2018-05-04David Perdue R–GABUY JT (jointly owned)Traded 2016-01-29 LATE·826d$1K–$15Kamendment pending
2018-05-04David Perdue R–GABUY JT (jointly owned)Traded 2016-01-15 LATE·840d$1K–$15Kamendment pending
2017-08-28David Perdue R–GASELL JT (jointly owned)Traded 08-14 +14d$1K–$15K
2017-08-28David Perdue R–GASELL partial · JT (partial sale, jointly owned)Traded 08-10 +18d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of WLK for quarter 2026-03-31, 1–25 of 309 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1Orbis Allan Gray Ltd$618M1
derived ·§ EDGAR ↗
2Capital World Investors$492M1
derived ·§ EDGAR ↗
3BlackRock, Inc.$360M1
derived ·§ EDGAR ↗
4BRANDES INVESTMENT PARTNERS, LP$215M1
derived ·§ EDGAR ↗
5WELLINGTON MANAGEMENT GROUP LLP$210M1
derived ·§ EDGAR ↗
6VANGUARD PORTFOLIO MANAGEMENT LLC$207M1
derived ·§ EDGAR ↗
7DIMENSIONAL FUND ADVISORS LP$171M1
derived ·§ EDGAR ↗
8VANGUARD CAPITAL MANAGEMENT LLC$170M1
derived ·§ EDGAR ↗
9STATE STREET CORP$161M1
derived ·§ EDGAR ↗
10FMR LLC$153M1
derived ·§ EDGAR ↗
11UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$115M1
derived ·§ EDGAR ↗
12MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$110M1
derived ·§ EDGAR ↗
13UBS Group AG$94.8M1
derived ·§ EDGAR ↗
14Holocene Advisors, LP$85.3M1
derived ·§ EDGAR ↗
15CITADEL ADVISORS LLC$83.6M1
derived ·§ EDGAR ↗
16GEODE CAPITAL MANAGEMENT, LLC$71.8M1
derived ·§ EDGAR ↗
17Nuveen, LLC$66.0M1
derived ·§ EDGAR ↗
18MORGAN STANLEY$56.8M1
derived ·§ EDGAR ↗
19SCHRODER INVESTMENT MANAGEMENT GROUP$43.4M1
derived ·§ EDGAR ↗
20BALYASNY ASSET MANAGEMENT L.P.$43.2M1
derived ·§ EDGAR ↗
21JACOBS LEVY EQUITY MANAGEMENT, INC$40.8M1
derived ·§ EDGAR ↗
22Woodline Partners LP$39.4M1
derived ·§ EDGAR ↗
23CHARLES SCHWAB INVESTMENT MANAGEMENT INC$36.4M1
derived ·§ EDGAR ↗
24NEW YORK STATE COMMON RETIREMENT FUND$36.2M1
derived ·§ EDGAR ↗
25ProShare Advisors LLC$34.6M1
derived ·§ EDGAR ↗
Show all 309 holders
Truncated by Public Filings. All 263 13F filers reporting this share class are listed. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · WLK

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Trimming
1 Caxton Associates $0 held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · WESTLAKE CORPORATION

Merged timeline of congressional filings and notable-manager moves on WLK
DateWhoChangeSize
2026-05-15Gotham Asset Management 13FADD+25,365 sh
2026-05-15Duquesne Family Office 13FNEW+21,194 sh
2026-05-14Caxton Associates 13FEXIT−4,615 sh

3 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)no rows
Congress net ($ bound)$0
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.