WLK

Westlake Corporation
NYSEUSDEQUITY Basic Materials DELAYED
Last price
63.39
▼ 1.22 (1.89%)
MARKET · —

Price

1D — H — L — Range — Vol —
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
—
Prev close
64.61
Day high
64.80
Day low
63.11
Volume
916.74K
Market cap
$8.10B
P/E (TTM)
—
52W range
56.33 – 124.23

Trailing performance

Price return · vs SPY
Returnvs SPY
1W
0.00% -1.9%
1M
-15.24% -16.4%
3M
-16.37% -20.9%
6M
-48.63% -66.8%
YTD
-14.27% -28.5%
1Y
-22.99% -39.4%
3Y
-49.15% -131.4%
5Y
— —

Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.

Unusual options activity

Account required
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
Free account required

Contracts trading at or above their open interest, ranked by notional and where the print landed.

Free account

5 more panels on WLK open with an account.

Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.

Insider net activity

6m · Form 4 rollup
Net shares
+32.68K
Net buying
Buy transactions
11
71.55K shares
Sell transactions
1
38.87K shares
Net transactions
+12
Buys less sells
Sell : buy shares
0.5 : 1
Mixed
Insider-held shares
95.22M
Total on file
Bought 71.55KSold 38.87K

Insider transactions

Account required
DateInsiderAction SharesValueHeld
Aug 11, 26
CHAO ALBERT Y
Officer and Director
SELL 38.87K $3.12M Direct
Aug 11, 26
CHAO ALBERT Y
Officer and Director
CONVERSION 38.87K $2.40M Direct
Aug 7, 26
CHAO DAVID TSUNG-HUNG
Director
— 2.17K — Direct
Aug 7, 26
SABAT CAROLYN CHAO
Director
— 2.17K — Direct
Aug 7, 26
CHAO CATHERINE T
Director
— 2.17K — Direct
Aug 7, 26
NORTHCUTT RONALD BRUCE
Director
— 2.17K — Direct
Aug 7, 26
MCCOLLUM MARK A
Director
— 2.17K — Direct
Aug 7, 26
CREGG ROGER A
Director
— 2.17K — Direct
Aug 7, 26
SHEETS JEFFREY WAYNE
Director
— 2.17K — Direct
Aug 7, 26
LUBEL KIMBERLY S
Director
— 2.17K — Direct
Aug 7, 26
GRAFF MICHAEL J
Director
— 2.17K — Direct
May 12, 26
BENDER MARK STEVEN
Chief Financial Officer
— 13.16K — Direct
Mar 27, 26
BENDER MARK STEVEN
Chief Financial Officer
SELL 16.41K $1.85M Direct
Mar 27, 26
BUESINGER ROBERT F
Officer
SELL 4.00K $461.00K Direct
What this is, and what it is not

These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.

A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.

This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.

Free account required

Officer and director trades in their own stock, straight from Form 4 filings.

Insider holders

10 reporting
NameRelationShares heldLatest
BENDER MARK STEVEN
Chief Financial Officer 35.90K Conversion of Exercise of derivative security
BUESINGER ROBERT F
Officer 34.48K Sale
CHAO ALBERT Y
Officer and Director 642.88K Sale
CHAO CATHERINE T
Director 27.17K Conversion of Exercise of derivative security
CHAO DAVID TSUNG-HUNG
Director 30.50K Conversion of Exercise of derivative security
CHAO JAMES Y
Chairman of the Board 49.77K Stock Award(Grant)
EDERINGTON LOUIS BENJAMIN
Officer 80.16K Stock Award(Grant)
GRAFF MICHAEL J
Director 23.31K Conversion of Exercise of derivative security
JANSSENS THOMAS J
Officer 17.13K Stock Award(Grant)
NORTHCUTT RONALD BRUCE
Director 23.35K Conversion of Exercise of derivative security

Fundamentals

TTM · reported
Market cap$8.10B
Enterprise value$12.63B
Revenue (TTM)$11.29B
Gross profit$1.15B
EBITDA$1.12B
Net income$-1.23B
EPS (TTM)$-9.58
Free cash flow$23.13M
Total cash$1.85B
Total debt$5.88B
Book value / share$68.12
Shares outstanding127.80M
Float33.21M
Short % of float16.31%
Dividend yield3.36%
Beta (5Y)0.69

Valuation & profitability ratios

Account required
Trailing P/E—
Forward P/E21.40
PEG ratio1.70
Price / sales—
Price / book0.93
EV / revenue1.12
EV / EBITDA11.23
Gross margin10.22%
Operating margin11.22%
Profit margin-10.94%
Return on equity-11.91%
Return on assets0.37%
Debt / equity63.81
Current ratio2.45
Free account required

Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.

Financial statements

As reported · 5 years · 5 quarters
Blank means not reported, not zero
Line item2025202420232022YoY
Total revenue $11.17B$12.14B$12.55B$15.79B -8.0%
Operating revenue $11.17B$12.14B$12.55B$15.79B -8.0%
Cost of revenue $10.36B$10.19B$10.33B$11.72B +1.7%
Gross profit $813.00M$1.96B$2.22B$4.07B -58.5%
Selling, general & admin $900.00M$874.00M$865.00M$809.00M +3.0%
Total operating expense $1.02B$991.00M$987.00M$964.00M +3.3%
Operating income -$211.00M$966.00M$1.23B$3.11B -121.8%
Net interest income -$71.00M-$6.00M-$61.00M-$153.00M -1,083.3%
Pre-tax income -$1.60B$938.00M$700.00M$2.95B -270.3%
Tax provision -$126.00M$291.00M$178.00M$649.00M -143.3%
Net income -$1.51B$602.00M$479.00M$2.25B -350.5%
Net income to common -$1.50B$599.00M$476.00M$2.23B -350.6%
Basic EPS -11.704.663.7317.46 -351.1%
Diluted EPS -11.704.643.7017.34 -352.2%
EBIT -$1.43B$1.10B$865.00M$3.12B -230.0%
EBITDA -$248.00M$2.21B$1.96B$4.18B -111.2%
Basic shares 128.26M128.54M127.81M127.97M -0.2%
Diluted shares 128.26M129.21M128.60M128.85M -0.7%

Options analytics

Account required
Put / call volume
0.73
Call-heavy session
Put / call open interest
0.15
Positioning, not flow
Max pain
110.00
+73.5% from spot
ATM implied vol
3.1%
Nearest strike to spot
Skew (10% OTM)
+12.5%
Puts bid over calls
Call volume
63
Contracts, this expiry
Put volume
46
Contracts, this expiry
Heaviest call OI
180.00
42 contracts
Heaviest put OI
130.00
5 contracts

Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.

Free account required

Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.

Earnings

History & consensus estimates
Reported vs expected · EPS
QuarterEst.ActualSurprise
Jun 2026 1.892.01 +6.6%
Mar 2026 -0.24-0.77 -225.0%
Dec 2025 -1.47-0.25 +83.1%
Sep 2025 0.23-0.29 -227.5%
Forward consensus
PeriodEPSAnalystsRevenueGrowth
Current quarter 0.95 13 $2.98B +5.1%
Next quarter 0.38 13 $2.74B +8.0%
Current year 2.69 14 $11.70B +4.7%
Next year 2.96 14 $11.97B +2.4%

Analyst targets & ownership

Account required
Mean target$85.63
High target$114.00
Low target$67.00
Implied upside35.08%
Analyst count16
ConsensusBUY
Strong buy / Buy2 / 4
Hold10
Sell / Strong sell0 / 0
Held by insiders74.51%
Held by institutions31.62%
Institutions holding471
Free account required

Price targets, consensus spread, insider and institutional ownership.

Moving averages & technicals

Computed from 2Y daily closes
SMA 10
64.94
-2.39% from price
SMA 20
67.47
-6.05% from price
SMA 50
72.75
-12.86% from price
SMA 100
77.05
-17.73% from price
SMA 200
88.17
-28.10% from price
EMA 12
65.47
-3.18% from price
EMA 26
68.38
-7.29% from price
EMA 50
71.87
-11.80% from price
RSI (14)
32.8
Neutral
MACD (12,26,9)
-2.91
Hist -0.23
ATR (14)
2.27
3.57% of price
Realised vol 30D
29.4%
Annualised
Bollinger upper
73.65
20, 2σ
Bollinger lower
61.30
20, 2σ
50 / 200 cross
Death
72.75 vs 88.17
Trend bias
Below 200
-28.10%

Options chain

Account required
Expiry
Spot 63.39
Calls
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Puts
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Free account required

Every listed expiry, both sides of the book, with volume, open interest and implied volatility.

Risk profile

Daily returns · 1Y window
Beta vs SPY
0.65
Less volatile than market
Correlation to SPY
0.19
Largely independent
Realised vol 30D
29.4%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-49.5%
Peak to trough
Max drawdown 5Y
-65.2%
Peak to trough
ATR 14
2.27
3.57% of price
Beta (reported)
0.69
5Y monthly, from filing

Short interest

Semi-monthly exchange report · lags by ~2 weeks
Shares short
5.31M
Prior 4.94M
Change vs prior
+7.6%
Shorts adding
% of float
16.31%
Elevated
% of shares out
4.15%
Against total outstanding
Days to cover
7.4
Crowded exit
Float
33.21M
Freely tradeable shares

Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.

Rating changes

343 on file
DateFirm ActionFromTo
Oct 5, 26 UBS MAINTAINED Buy Buy
Oct 1, 26 Truist Securities MAINTAINED Buy Buy
Oct 1, 26 Wells Fargo MAINTAINED Equal-Weight Equal-Weight
Sep 30, 26 Citigroup MAINTAINED Neutral Neutral
Sep 25, 26 UBS MAINTAINED Buy Buy
Sep 11, 26 Keybanc INITIATED — Overweight
Sep 9, 26 BMO Capital DOWNGRADE Outperform Market Perform
Aug 6, 26 RBC Capital MAINTAINED Outperform Outperform
Aug 5, 26 Wells Fargo MAINTAINED Equal-Weight Equal-Weight
Jul 20, 26 Truist Securities MAINTAINED Buy Buy
Jul 2, 26 Morgan Stanley MAINTAINED Equal-Weight Equal-Weight
Jul 1, 26 Mizuho MAINTAINED Neutral Neutral

Dividends & splits

Declared · from the issuer
Forward rate$2.13 / yr
Forward yield3.36%
5-year avg yield1.47%
Payout ratio69.63%
Ex-dividend dateAug 25, 2026
Next pay dateSep 10, 2026
Last split2:1
Split dateMar 19, 2014

PRIVATE STRATEGY · BY QUALIFICATION

The same data. A different seat.

The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.