WLK

WESTLAKE CORP

NYSE · Industrial Organic Chemicals · Inc. DE · CIK 0001262823

$84.33 -3.57% $10.8B

Insider Selling Cluster (2 insiders)High Impact Filing (7/10)21 New Institutional Positions20 Institutional Exits

Vol

Market Cap$10.8B

Cap SizeLarge Cap

Analyst ConsensusHold (48%)

Inst. Holders50 funds

Inst. Value$3.3B

Inst. Activity21 buys / 20 sells

Insider Activity0B / 2S

Insider Net $-$2.3M

SEC Reports11

Exchange NYSE·Sector Industrial Organic Chemicals·Inc. DE·CIK 0001262823·Prev Close $87.45

Recent Activity

Jun 15, 2026 SEC

Westlake completed the previously-announced acquisition of a PVC and VCM production site in Wilhelmshaven, Germany, whic

8-K — Impact 4/10

Jun 15, 2026 Insider

Baksht Jonathan was granted 20,580 shares

SVP and CFO

Jun 14, 2026 SEC

An institutional cluster in Westlake Corp (WLK) for Q1 2026 reveals a mixed picture: 21 buyers with net inflows of ~$579

INST-CLUSTER — Impact 5/10

May 25, 2026 dark_pool

Dark Pool: WLK — 1.1M shares, 27,732 trades

Week starting 2026-05-25. Total ATS volume: 1,085,526 shares across 27,732 trades.

May 13, 2026 Insider

Bender Mark Steven surrendered for taxes 5,284 shares

EVP & CFO @ $97.34 ($514.3K)

May 12, 2026 Insider

Bender Mark Steven acquired via exercise 13,164 shares

EVP & CFO

May 5, 2026 SEC

Westlake reported a Q1 2026 GAAP net loss of $169M (-$1.31/share) on net sales of $2.65B, compared to a net loss of $40M

8-K — Impact 7/10

Inst.

Capital World Investors — ADD

4,211,006 shares ($491.9M)

Price Targets

$113.36 +34.4% upside Strong Buy

Current $84.33 Low $90.00 Median $112.50 High $133.00 14 analysts

$90.00 $133.00

Analyst Ratings

Hold48% buy · 21 analysts

2Strong Buy

8Buy

10Hold

1Sell

0Strong Sell

Recent Analyst Actions

Date	Firm	Action	Rating
Jun 5, 2026	UBS	MAINTAIN	Buy → Buy
May 27, 2026	Citigroup	DOWNGRADE	Buy → Neutral
May 18, 2026	JP Morgan	UPGRADE	Underweight → Neutral
May 11, 2026	RBC Capital	MAINTAIN	Outperform → Outperform
May 7, 2026	Citigroup	MAINTAIN	Buy → Buy

Earnings Estimates

Period	EPS Est.	Range	Growth	#
Current Q	$1.95 ▲ +14.9%	$1.35 — $2.51	2264% YoY	11
Next Q	$2.03 ▲ +16.4%	$1.41 — $2.83	799% YoY	11
Current FY	$3.76 ▲ +6.2%	$2.25 — $4.86	518% YoY	10
Next FY	$3.83 ▼ -12.6%	$2.16 — $5.20	2% YoY	11

Latest Reports

NEUTRAL 8-K 4/10

Westlake completed the previously-announced acquisition of a PVC and VCM production site in Wilhelmshaven, Germany, whic

Jun 15, 2026

MIXED INST-CLUSTER 5/10

An institutional cluster in Westlake Corp (WLK) for Q1 2026 reveals a mixed picture: 21 buyers with net inflows of ~$579

Jun 14, 2026

Top Institutional Holders

Fund	Value	Move
Capital World Investors	$491.9M	ADD
BlackRock, Inc.	$359.7M	—
BRANDES INVESTMENT PARTNERS, LP	$215.3M	—
WELLINGTON MANAGEMENT GROUP LLP	$209.5M	TRIM
VANGUARD PORTFOLIO MANAGEMENT LLC	$206.7M	—

Recent Insider Trades

Date	Insider	Type	Value
Jun 15, 2026	Baksht Jonathan	A	$0.00
May 13, 2026	Bender Mark	F	$514.3K
May 12, 2026	Bender Mark	M	$0.00
Apr 2, 2026	Powers Brian	A	$0.00
Mar 27, 2026	Buesinger Robert	SELL	$461.0K

50 institutional holders with $3.3B total value (28,080,502 shares) as of 2026-Q1. Top holders: Capital, BlackRock,, BRANDES. Net buying activity: 21 institutions added/increased vs 20 reduced.

Top Institutional Holders — 2026-Q1

#	Fund	Shares	Value	% of Tracked	Last Move
1	Capital World Investors	4,211,006	$491.9M	15.0%	ADD +93.9%
2	BlackRock, Inc.	3,079,087	$359.7M	11.0%	—
3	BRANDES INVESTMENT PARTNERS, LP	1,842,650	$215.3M	6.6%	—
4	WELLINGTON MANAGEMENT GROUP LLP	1,793,517	$209.5M	6.4%	TRIM -57.5%
5	VANGUARD PORTFOLIO MANAGEMENT LLC	1,769,808	$206.7M	6.3%	—
6	DIMENSIONAL FUND ADVISORS LP	1,466,020	$171.3M	5.2%	ADD +45.0%
7	VANGUARD CAPITAL MANAGEMENT LLC	1,455,594	$170.0M	5.2%	—
8	GOLDMAN SACHS GROUP INC	1,393,327	$162.8M	5.0%	—
9	STATE STREET CORP	1,380,493	$161.3M	4.9%	—
10	FMR LLC	1,312,473	$153.3M	4.7%	DOUBLED +473.5%
11	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	943,975	$110.3M	3.4%	—
12	Holocene Advisors, LP	730,035	$85.3M	2.6%	TRIM -40.2%
13	CITADEL ADVISORS LLC	715,586	$83.6M	2.6%	—
14	Nuveen, LLC	564,744	$66.0M	2.0%	—
15	MORGAN STANLEY	486,508	$56.8M	1.7%	TRIM -36.0%
16	Erste Asset Management GmbH	395,000	$45.8M	1.4%	ADD +61.5%
17	SCHRODER INVESTMENT MANAGEMENT GROUP	374,508	$43.4M	1.3%	NEW
18	BALYASNY ASSET MANAGEMENT L.P.	369,672	$43.2M	1.3%	NEW
19	Woodline Partners LP	337,075	$39.4M	1.2%	TRIM -46.3%
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	311,762	$36.4M	1.1%	—

Recent Position Changes

Fund	Action	Prev Shares	Curr Shares	Change %	Value	Quarter
Capital World Investors	ADD	2,171,324	4,211,006	+93.9%	$491.9M	2026-Q1
WELLINGTON MANAGEMENT GROUP LLP	TRIM	4,220,717	1,793,517	-57.5%	$209.5M	2026-Q1
FMR LLC	DOUBLED	228,843	1,312,473	+473.5%	$153.3M	2026-Q1
Holocene Advisors, LP	TRIM	1,220,622	730,035	-40.2%	$85.3M	2026-Q1
MORGAN STANLEY	TRIM	759,623	486,508	-36.0%	$56.8M	2026-Q1
SCHRODER INVESTMENT MANAGEMENT GROUP	NEW	—	374,508	—	$43.4M	2026-Q1
BALYASNY ASSET MANAGEMENT L.P.	NEW	—	369,672	—	$43.2M	2026-Q1
Woodline Partners LP	TRIM	628,159	337,075	-46.3%	$39.4M	2026-Q1
Allspring Global Investments Holdings, LLC	TRIM	506,756	285,434	-43.7%	$33.3M	2026-Q1
FEDERATED HERMES, INC.	DOUBLED	107,730	266,651	+147.5%	$31.2M	2026-Q1
BANK OF AMERICA CORP /DE/	ADD	184,435	236,986	+28.5%	$27.7M	2026-Q1
CAPSTONE INVESTMENT ADVISORS, LLC	DOUBLED	3,119	135,808	+4254.2%	$15.9M	2026-Q1
FIRST TRUST ADVISORS LP	TRIM	146,411	102,299	-30.1%	$12.0M	2026-Q1
Russell Investments Group, Ltd.	TRIM	158,321	89,362	-43.6%	$10.4M	2026-Q1
Cerity Partners LLC	TRIM	127,095	72,679	-42.8%	$8.5M	2026-Q1
MACKENZIE FINANCIAL CORP	DOUBLED	19,833	71,968	+262.9%	$8.4M	2026-Q1
VICTORY CAPITAL MANAGEMENT INC	NEAR_EXIT	1,113,819	45,578	-95.9%	$5.3M	2026-Q1
BANK OF MONTREAL /CAN/	ADD	26,923	39,038	+45.0%	$4.6M	2026-Q1
Gotham Asset Management, LLC	DOUBLED	9,199	34,564	+275.7%	$4.0M	2026-Q1
AMERIPRISE FINANCIAL INC	TRIM	49,117	28,487	-42.0%	$3.3M	2026-Q1
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	TRIM	46,760	25,000	-46.5%	$2.9M	2026-Q1
STIFEL FINANCIAL CORP	ADD	18,921	24,925	+31.7%	$2.9M	2026-Q1
FIFTH THIRD BANCORP	DOUBLED	562	16,045	+2755.0%	$1.9M	2026-Q1
SEI INVESTMENTS CO	TRIM	28,442	12,769	-55.1%	$1.5M	2026-Q1
Universal- Beteiligungs- und Servicegesellschaft mbH	ADD	9,182	12,479	+35.9%	$1.5M	2026-Q1

12 unique insiders with 43 transactions. Net insider value: -$2.3M ($0.00 bought, $2.3M sold).

Insider Transactions

Date	Insider	Title	Type	Shares	Price	Value
Jun 15, 2026	Baksht Jonathan	SVP and CFO	AWARD	20,580	—	—
May 13, 2026	Bender Mark Steven	EVP & CFO	TAX W/H	5,284	$97.34	$514.3K
May 12, 2026	Bender Mark Steven	EVP & CFO	EXERCISE	13,164	—	—
Apr 2, 2026	Powers Brian John	SVP, PEM Segment Head	AWARD	1,961	—	—
Mar 27, 2026	Buesinger Robert F.	EVP, PEM Segment Head	SELL	4,000	$115.25	$461.0K
Mar 27, 2026	Bender Mark Steven	EVP & CFO	SELL	16,413	$112.54	$1.8M
Feb 27, 2026	Bender Mark Steven	EVP & CFO	EXERCISE	6,199	$65.81	$408.0K
Feb 20, 2026	Chao James	Senior Chairman	AWARD	7,472	—	—
Feb 20, 2026	Chao James	Senior Chairman	AWARD	27,382	—	—
Feb 20, 2026	Chao James	Senior Chairman	TAX W/H	1,569	$94.10	$147.6K
Feb 20, 2026	Chao Albert	Executive Chairman	AWARD	14,945	—	—
Feb 20, 2026	Chao Albert	Executive Chairman	AWARD	54,763	—	—
Feb 20, 2026	Chao Albert	Executive Chairman	TAX W/H	2,501	$94.10	$235.3K
Feb 20, 2026	Chao John Tsung-chen	Director	AWARD	1,104	—	—
Feb 20, 2026	Chao John Tsung-chen	Director	AWARD	4,044	—	—
Feb 20, 2026	Chao John Tsung-chen	Director	TAX W/H	91	$94.10	$8.6K
Feb 20, 2026	Buesinger Robert F.	EVP, PEM Segment Head	AWARD	5,281	—	—
Feb 20, 2026	Buesinger Robert F.	EVP, PEM Segment Head	AWARD	19,351	—	—
Feb 20, 2026	Buesinger Robert F.	EVP, PEM Segment Head	TAX W/H	326	$94.10	$30.7K
Feb 20, 2026	Holy Jeffrey Adam	VP and CAO	AWARD	1,199	—	—
Feb 20, 2026	Holy Jeffrey Adam	VP and CAO	AWARD	4,394	—	—
Feb 20, 2026	Holy Jeffrey Adam	VP and CAO	TAX W/H	81	$94.10	$7.6K
Feb 20, 2026	Szwejbka Scott Thomas	SVP, HIP Segment Head	AWARD	3,983	—	—
Feb 20, 2026	Szwejbka Scott Thomas	SVP, HIP Segment Head	AWARD	14,595	—	—
Feb 20, 2026	Szwejbka Scott Thomas	SVP, HIP Segment Head	TAX W/H	91	$94.10	$8.6K
Feb 20, 2026	Patel Bhavesh V.	Director	AWARD	1,852	—	—
Feb 20, 2026	Bender Mark Steven	EVP & CFO	AWARD	7,747	—	—
Feb 20, 2026	Bender Mark Steven	EVP & CFO	AWARD	28,389	—	—
Feb 20, 2026	Bender Mark Steven	EVP & CFO	TAX W/H	445	$94.10	$41.9K
Feb 20, 2026	Gilson Jean-Marc	President and CEO	AWARD	29,784	—	—
Feb 20, 2026	Gilson Jean-Marc	President and CEO	AWARD	109,139	—	—
Feb 20, 2026	Ederington L. Benjamin	EVP, Legal & External Affairs	AWARD	7,002	—	—
Feb 20, 2026	Ederington L. Benjamin	EVP, Legal & External Affairs	AWARD	25,656	—	—
Feb 20, 2026	Ederington L. Benjamin	EVP, Legal & External Affairs	TAX W/H	357	$94.10	$33.6K
Feb 19, 2026	Chao James	Senior Chairman	AWARD	3,884	—	—
Feb 19, 2026	Chao Albert	Executive Chairman	AWARD	6,193	—	—
Feb 19, 2026	Chao John Tsung-chen	Director	AWARD	213	—	—
Feb 19, 2026	Buesinger Robert F.	EVP, PEM Segment Head	AWARD	1,301	—	—
Feb 19, 2026	Holy Jeffrey Adam	VP and CAO	AWARD	264	—	—
Feb 19, 2026	Szwejbka Scott Thomas	SVP, HIP Segment Head	AWARD	365	—	—
Feb 19, 2026	Bender Mark Steven	EVP & CFO	AWARD	1,777	—	—
Feb 19, 2026	Ederington L. Benjamin	EVP, Legal & External Affairs	AWARD	1,425	—	—
Feb 16, 2022	Bender Mark Steven	EVP & CFO	TAX W/H	1,171	$104.96	$122.9K

11 SEC filing reports analyzed. Sentiment: 0 bullish, 3 bearish, 1 mixed, 7 neutral. Avg impact: 4.4/10.

NEUTRAL 8-K 4/10

Westlake completed the previously-announced acquisition of a PVC and VCM production site in Wilhelms

Jun 15, 2026

MIXED INST-CLUSTER 5/10

An institutional cluster in Westlake Corp (WLK) for Q1 2026 reveals a mixed picture: 21 buyers with

Jun 14, 2026

BEARISH 8-K 7/10

Westlake reported a Q1 2026 GAAP net loss of $169M (-$1.31/share) on net sales of $2.65B, compared t

May 5, 2026

NEUTRAL 8-K 4/10

Westlake Corporation appointed Jonathan H. Baksht as Senior Vice President and Chief Financial Offic

Apr 20, 2026

BEARISH 8-K 7/10

Westlake Corp agreed to pay $67 million to settle antitrust litigation with direct purchasers relate

Apr 14, 2026

BEARISH CLUSTER 6/10

Two Westlake Corp executives — the CFO and a senior segment head — sold shares worth $2.31M in late

Apr 6, 2026

NEUTRAL 8-K 4/10

Westlake Corp entered into a new $1.5 billion unsecured revolving credit facility, replacing its pre

Apr 6, 2026

NEUTRAL 8-K 3/10

Westlake Corp announced the retirement of Executive Vice President Robert F. Buesinger, who transiti

Apr 2, 2026

NEUTRAL DEFA14A 3/10

Analysis based on filing metadata only — document content was unavailable

Apr 2, 2026

NEUTRAL 144 2/10

Robert Buesinger, an officer of Westlake Corp, filed a Form 144 to notify intent to sell up to 4,000

Mar 30, 2026

NEUTRAL 144 3/10

Mark Bender, an officer of Westlake Corp, filed a Form 144 to notify the SEC of his intent to sell u

Mar 27, 2026

∅

No press releases analyzed yet. Press releases are collected from GlobeNewsWire and analyzed by the LLM pipeline.

Current analyst consensus: Hold (48% buy). Based on 21 analysts: 2 strong buy, 8 buy, 10 hold, 1 sell, 0 strong sell.

Analyst Price Targets

$113.36 mean target +34.4% upside Strong Buy (2.36)

$90.00 Low $133.00 High

Metric	Value
Current Price	$84.33
Target Low	$90.00
Target Mean	$113.36
Target Median	$112.50
Target High	$133.00
# Analysts	14
Recommendation	Strong Buy (2.36)

Earnings Estimates & Revisions

Period	EPS Avg	EPS Low	EPS High	EPS Growth	30d Rev.	Up/Down	Rev. Avg	Rev. Growth	Analysts
Current Q 2026-06-30	$1.95	$1.35	$2.51	2264.2%	+14.9%	2↑ 2↓	$3.3B	10.2%	11
Next Q 2026-09-30	$2.03	$1.41	$2.83	799.2%	+16.4%	3↑ 0↓	$3.2B	13.8%	11
Current FY 2026-12-31	$3.76	$2.25	$4.86	517.9%	+6.2%	1↑ 2↓	$12.0B	7.7%	10
Next FY 2027-12-31	$3.83	$2.16	$5.20	1.9%	-12.6%	3↑ 5↓	$12.2B	1.5%	11

Current Quarter EPS Revision History

Timepoint	EPS Estimate	Change
Current	$1.948
7d ago	$1.955	-0.007
30d ago	$1.695	+0.252
60d ago	$0.938	+1.009
90d ago	$0.747	+1.200

10 analyst firms have rated this stock: 2 upgrades, 4 downgrades, 0 initiations.

Individual Analyst Actions

Date	Analyst Firm	Action	Previous Rating	New Rating
Jun 5, 2026	UBS	MAINTAIN	Buy	Buy
May 27, 2026	Citigroup	DOWNGRADE	Buy	Neutral
May 18, 2026	JP Morgan	UPGRADE	Underweight	Neutral
May 11, 2026	RBC Capital	MAINTAIN	Outperform	Outperform
May 7, 2026	Citigroup	MAINTAIN	Buy	Buy
May 6, 2026	UBS	MAINTAIN	Buy	Buy
May 6, 2026	JP Morgan	DOWNGRADE	Neutral	Underweight
May 6, 2026	Wells Fargo	MAINTAIN	Equal-Weight	Equal-Weight
May 5, 2026	Morgan Stanley	MAINTAIN	Equal-Weight	Equal-Weight
Apr 8, 2026	Citigroup	MAINTAIN	Buy	Buy
Apr 6, 2026	Wells Fargo	MAINTAIN	Equal-Weight	Equal-Weight
Apr 6, 2026	B of A Securities	DOWNGRADE	Buy	Neutral
Mar 26, 2026	Truist Securities	MAINTAIN	Buy	Buy
Mar 23, 2026	Mizuho	MAINTAIN	Neutral	Neutral
Mar 18, 2026	UBS	MAINTAIN	Buy	Buy
Mar 13, 2026	Wells Fargo	MAINTAIN	Equal-Weight	Equal-Weight
Mar 12, 2026	Citigroup	MAINTAIN	Buy	Buy
Mar 5, 2026	BMO Capital	UPGRADE	Market Perform	Outperform
Feb 26, 2026	Citigroup	MAINTAIN	Buy	Buy
Feb 26, 2026	Wells Fargo	MAINTAIN	Equal-Weight	Equal-Weight
Feb 25, 2026	UBS	MAINTAIN	Buy	Buy
Feb 25, 2026	Mizuho	MAINTAIN	Neutral	Neutral
Feb 9, 2026	Mizuho	DOWNGRADE	Outperform	Neutral
Jan 21, 2026	Truist Securities	MAINTAIN	Buy	Buy
Jan 13, 2026	Citigroup	MAINTAIN	Buy	Buy
Jan 8, 2026	Mizuho	MAINTAIN	Outperform	Outperform
Dec 23, 2025	UBS	MAINTAIN	Buy	Buy

Monthly Consensus History

Period	Strong Buy	Buy	Hold	Sell	Buy %
Jun 1, 2026	2	8	10	1	48%
May 1, 2026	3	8	9	1	52%
Apr 1, 2026	4	8	8	1	57%
Mar 1, 2026	4	7	10	1	50%
Feb 1, 2026	4	8	9	1	55%
Jan 1, 2026	4	8	9	1	55%

Strong BuyBuyHoldSellStrong Sell

∅

No congressional trading data available for this ticker. Data is sourced from Senate and House financial disclosure filings.

∅

No Reddit sentiment data available yet. Sentiment is analyzed from Reddit investment communities on a rolling basis.

May 25, 2026

dark_pool

Dark Pool: WLK — 1.1M shares, 27,732 trades

Week starting 2026-05-25. Total ATS volume: 1,085,526 shares across 27,732 trades.

May 18, 2026

dark_pool

Dark Pool: WLK — 1.6M shares, 33,508 trades

Week starting 2026-05-18. Total ATS volume: 1,611,113 shares across 33,508 trades.

May 11, 2026

dark_pool

Dark Pool: WLK — 1.8M shares, 37,714 trades

Week starting 2026-05-11. Total ATS volume: 1,832,457 shares across 37,714 trades.

May 7, 2026

short_interest

FTD: WLK — 9,837 shares ($1.0M) failed to deliver

Settlement: 20260507, Price: $99.92, FTD Value: $982,913.04, WESTLAKE CORPORATION

May 5, 2026

earnings_calendar

WLK Q1 2026 Earnings Before Market Open — 2026-05-05

May 4, 2026

dark_pool

Dark Pool: WLK — 2.7M shares, 47,771 trades

Week starting 2026-05-04. Total ATS volume: 2,650,024 shares across 47,771 trades.

Apr 27, 2026

dark_pool

Dark Pool: WLK — 1.5M shares, 39,015 trades

Week starting 2026-04-27. Total ATS volume: 1,483,050 shares across 39,015 trades.

Apr 20, 2026

dark_pool

Dark Pool: WLK — 1.5M shares, 33,597 trades

Week starting 2026-04-20. Total ATS volume: 1,486,120 shares across 33,597 trades.

Apr 13, 2026

dark_pool

Dark Pool: WLK — 1.7M shares, 38,280 trades

Week starting 2026-04-13. Total ATS volume: 1,684,541 shares across 38,280 trades.

Apr 8, 2026

short_volume

Short Volume: WLK — 60.5% short (0.3M / 0.6M)

Short: 347,417 | Exempt: 0 | TRF Vol: 574,525 | Short Ratio: 60.5% | Off-exchange volume (dark pool + OTC)

Apr 8, 2026

short_interest

FTD: WLK — 36,020 shares ($4.4M) failed to deliver

Settlement: 20260408, Price: $123.39, FTD Value: $4,444,507.8, WESTLAKE CORPORATION

Apr 6, 2026

dark_pool

Dark Pool: WLK — 1.7M shares, 40,012 trades

Week starting 2026-04-06. Total ATS volume: 1,687,974 shares across 40,012 trades.

Apr 1, 2026

short_interest

FTD: WLK — 4,675 shares ($0.5M) failed to deliver

Settlement: 20260401, Price: $116.82, FTD Value: $546,133.5, WESTLAKE CORPORATION

Mar 31, 2026

short_interest

FTD: WLK — 33,998 shares ($3.9M) failed to deliver

Settlement: 20260331, Price: $116.00, FTD Value: $3,943,768, WESTLAKE CORPORATION

Mar 30, 2026

short_volume

Short Volume: WLK — 70.2% short (0.7M / 0.9M)

Short: 665,420 | Exempt: 0 | TRF Vol: 947,851 | Short Ratio: 70.2% | Off-exchange volume (dark pool + OTC)