Insider buying last 90 days
No open-market insider purchases were filed for WLK in the last 90 days.
From Form 4 filings, dated to when each was filed.
Every WLK insider filing, plotted on the chart in Gekko.Open WLK in Gekko
NYSE: WLK
Westlake (WLK) Stock Analysis & Forecast
Sep 28 close
$66.84−0.87 (−1.3%)
Gekko Brief
Westlake closed at $66.84 on 28 September 2026, -1.3% on the day. The price sits below both the 50-day ($74.18) and 200-day ($88.48) moving averages, inside a 52-week range of $56.33 to $124.23. The GekkoIndex reads 69.1, in the Accumulation zone, down 0.7 points over five sessions. Gekko Fair Value is $89.98, so the price is 25.7% below it.
The next earnings report is due on 29 October 2026, 30 days away (before open). Over the last 8 reports the company beat the earnings estimate 2 times, with an average move of 8.9% across the report. Seasonally, the next 20 trading days from this point averaged +0.6% over the last 5 years, rising in 3 of them.
11 firms rate the stock: 5 buy, 6 hold and 0 sell, with a consensus target of $92.81. A typical daily move is about 3.3%, and a typical 20-day move about 6.6%. On the swing-trade checklist, 4 items read supportive and 1 reads as a headwind (trend).
Generated Sep 29, 2026 from the data above.
Westlake price vs fair value
Close $66.84200-day averageGekko Fair Value $89.98
Westlake quick facts
- Market cap
- $8.56B
- P/E ratio
- —
- Forward P/E
- 15
- EPS, TTM
- −$9.35
- Revenue, TTM
- $11.29B
- Profit margin
- -10.9%
- Dividend yield
- 3.10%
- Beta
- 0.63
- Volume
- 444,140 avg 638,866
- 1-year return
- −12.1%
- Typical daily move
- ±3.3%
- Typical 20-day move
- ±6.6%
- 50-day average
- $74.18
- 200-day average
- $88.48
- Next earnings
- Oct 29 before open
- Shares outstanding
- 127.8M
Westlake swing-trade checklist
Westlake scores 4 supportive, 0 mixed and 1 headwind across the 5 checklist items with data.
Six things swing traders check before a 20-day hold, read from the latest data.
4 supportive0 mixed1 headwind
- Trendheadwind
Below 50 and 200-day
Close $66.84 is below the 50-day ($74.18) and 200-day ($88.48) averages, and the 50-day is below the 200-day.
See the chart - GekkoIndexsupportive
69.1, Accumulation
Reading 69.1 is in the Accumulation zone.
See the GekkoIndex - Fair valuesupportive
25.7% below
Price is 25.7% below Gekko Fair Value (more than 5% below).
See fair value - Smart moneyno data
No data
No insider, Congress or unusual options activity in the window.
See smart money - Earnings risksupportive
Reports in 30 days
Next report Oct 29, 2026, 30 days away — outside a typical 20-trading-day hold.
See earnings - Seasonalitysupportive
+0.6% on average
From this point in the calendar, the next 20 trading days averaged +0.6% over 5 years, rising in 3 of them.
See seasonality
A description of current data, not a recommendation. How this page works
Westlake stock chart and price history
Westlake closed at $66.84 on Sep 28, 2026, −12.1% over the past year, inside a 52-week range of $56.33 to $124.23.
Close50-day average200-day averageVolume
Use the left and right arrow keys to read daily values.
Performance Breakdown
- 1 month
- −9.6%
- 3 months
- −10.5%
- 6 months
- −41.0%
- 1 year
- −12.1%
The full WLK chart adds GekkoIndex, insider, options, Congress and hedge fund markers, plus TrendCandles™.Open WLK in Gekko
Follow Westlake through every session
Put WLK on a Gekko watchlist and see its GekkoIndex, Gekko Fair Value and smart money signals update on the chart as they change.
Track WLK in GekkoFree for 7 days. No credit card required.
About Westlake
Westlake makes and supplies petrochemicals, polymers, and building materials on a global scale. It is recognized for producing chemical building blocks like polyethylene, PVC, and styrene monomer, alongside construction products such as siding, roofing, windows, decking, and pipe. These outputs feed into markets ranging from home construction to packaging, automotive, healthcare, and water treatment.
The company runs through two divisions. One, Performance and Essential Materials, handles the chemical side, turning out polyethylene, VCM, ethylene dichloride chlor-alkali, and chlorinated derivatives among other compounds. The other, Housing and Infrastructure Products, covers building and consumer goods, including PVC films, composite roof tiles, landscape edging, matting, and masonry joint controls. Customers include chemical processors, plastics fabricators, construction contractors, municipal buyers, and supply warehouses. Westlake operates as a subsidiary of TTWF LP.
The company traces back to 1986 and is based in Houston, Texas. It carried the name Westlake Chemical Corporation before switching to Westlake Corporation in February 2022. Its shares trade on the NYSE under the ticker WLK.
- Listed
- NYSE
- Sector
- Process industries
- Industry
- Chemicals: specialty
- Website
- westlake.com
Westlake GekkoIndex: the smart money zone
Westlake’s GekkoIndex — Gekko’s 0 to 100 smart money score — reads 69.1, in the Accumulation zone, down 0.7 points over five sessions.
69.1Accumulation
Down 0.7 points over five sessions.
Reading for Sep 28, 2026
What followed past readings in each zone
| Zone | Readings | 5 days | 20 days | ||
|---|---|---|---|---|---|
| Buying | 85 | −0.2% | −0.2% | ||
| Accumulation (current zone) | 245 | −0.7% | −3.4% | ||
| Neutral | 327 | −0.1% | −0.7% | ||
| Distribution | 14 | −1.8% | +4.5% | ||
| Selling | 1 | Too few readings yet | |||
Average WLK share-price change over the trading days after each daily reading in its GekkoIndex history. Across every stock Gekko tracks, Accumulation readings averaged +2.3% over 20 days. Past behaviour doesn’t guarantee future results.
Accumulation zone: Institutional interest building. About the five zones →
See every daily GekkoIndex reading plotted over the WLK price, zone by zone.Track WLK in Gekko
Is Westlake stock overvalued? Gekko Fair Value
Westlake trades 25.7% below Gekko Fair Value of $89.98, so the shares are undervalued on Gekko’s estimate.
Gekko’s own estimate of what Westlake shares are worth, recalculated every trading day.
$89.98
Gekko Fair Value, Sep 26, 2026
25.7% Undervalued
Gekko Fair Value on every chart, with the gap to price updating daily.Open WLK in Gekko
Westlake insider and Congress trading
No open-market insider purchases were filed for Westlake, and no Congress trades were disclosed, in the last 90 days.
Plus buybacks, unusual options and fund positions, each dated to when it became public.
Congress trades last 90 days
No trades in WLK were disclosed by members of Congress in the last 90 days.
From congressional disclosures, which report amounts as ranges.
Congress disclosures for WLK, plotted on the chart in Gekko.Open WLK in Gekko
Buybacks
Westlake has been buying back its own shares.
- Bought back, quarter ended Jun 30, 2026
- $30.00M
- As a share of market cap
- 0.35%
From company filings.
Hedge funds and billionaires quarter ended Jun 30
0of the funds Gekko tracks hold WLK.
0added0opened0trimmed1sold out
Which funds are on each side, name by name.Unlock in Gekko
Westlake earnings: next date and track record
Westlake reports on Oct 29, 2026, before the open (30 days away), and beat the EPS estimate in 2 of its last 8 reports.
Next earnings report
Oct 29, 2026
Expected before the open, 30 days away
- EPS estimate
- $1.40
- Revenue estimate
- $3.05B
2 of 8reports beat the EPS estimate
±8.9%average move across the report
5 of 8reports followed by a gain
Share-price move across each report
Last earnings call, Aug 4, 2026 AI summary
- What they said
- Westlake Corporation reported Q2 2026 net sales of $3.3 billion and EBITDA of $679 million, representing substantial improvement year-over-year and sequentially. PEM segment benefited from a 21% sequential average sales price increase driven by higher global oil prices, while North American feedstock costs (natural gas/ethane) actually declined. HIP segment delivered 6% year-over-year organic sales volume growth. The 3-pillar profitability improvement plan contributed approximately $150 million to year-over-year EBITDA improvement.
- Guidance
- Management views HIP as a key growth driver supported by residential construction activity in North and South America. The 3-pillar profitability improvement plan continues generating significant cost savings, though specific forward-looking financial targets were not yet disclosed in this excerpt.
| Reported | EPS | Revenue | Move |
|---|---|---|---|
| Aug 4, 2026 | $2.01 est $1.83 | $3.27B est $3.24B | +12.7% |
| May 5, 2026 | −$0.77 est −$0.22 | $2.65B est $2.79B | −13.2% |
| Feb 24, 2026 | −$0.25 est −$1.47 | $2.53B est $2.61B | +10.8% |
| Oct 30, 2025 | −$0.29 est $0.18 | $2.84B est $2.61B | −6.3% |
| Aug 5, 2025 | −$0.09 est $0.06 | $2.95B est $2.94B | +6.4% |
| May 2, 2025 | −$0.31 est $0.70 | $2.85B est $3.13B | −15.2% |
| Feb 24, 2025 | $0.06 est $1.05 | $2.84B est $2.96B | +2.2% |
| Nov 5, 2024 | $1.41 est $2.21 | $3.12B est $3.31B | +4.3% |
“Move” is the close of the first session after the report compared with the close of the last session before it, so it reads the same whether the company reported before the open or after the close.
Westlake stock forecast and analyst price targets
Analysts’ average 12-month price target for Westlake is $92.81, +38.9% from the last close, from 11 firms rating the stock in the last 90 days.
$92.81consensus 12-month target, +38.9% from the last close
Now $66.84Avg $92.81
Low $82High $104
Each firm’s latest rating in the last 90 days: 11 firms.
Latest analyst actions
| Date | Firm | Target | vs price |
|---|---|---|---|
| Sep 25 | UBS | $98 | +46.6% |
| Sep 14 | Bank of America Securities | $90 | +34.6% |
| Sep 11 | KeyBanc | $92 | +37.6% |
| Sep 11 | Alembic Global | $100 | +49.6% |
| Sep 9 | BMO Capital | $82 | +22.7% |
−3.4%average 20-day move after past Accumulation readings
+0.6%average move over the next 20 trading days in the last 5 years
±3.3%typical daily move, from the 14-day average range
Gekko doesn’t publish price predictions. These are analyst targets and historical base rates, which don’t guarantee future results.
Westlake seasonality: the next 20 trading days
Over the next 20 trading days from Sep 29, Westlake averaged +0.6% across the last 5 years, rising in 3 of them.
Next 20 trading days, by year
Average move and hit rate
| Window | Average | Years higher |
|---|---|---|
| Next 5 trading days | +3.1% | 3 of 5 |
| Next 10 trading days | +1.5% | 3 of 5 |
| Next 15 trading days | −0.2% | 2 of 5 |
| Next 20 trading days | +0.6% | 3 of 5 |
| Next 30 trading days | +0.5% | 2 of 5 |
For scale, WLK’s typical 20-trading-day move in either direction is about 6.6%.
Westlake market cap and key statistics
Westlake’s market cap is $8.56B and revenue of $11.29B over the last twelve months.
Valuation
- Market cap
- $8.56B
- Forward P/E
- 15
- EPS, TTM
- −$9.35
- Gekko Fair Value
- $89.98
Trading
- Volume
- 444,140
- Avg volume, 20 days
- 638,866
- 52-week high
- $124.23
- 52-week low
- $56.33
- Shares outstanding
- 127.8M
Financials
- Revenue, TTM
- $11.29B
- Profit margin
- -10.9%
- Return on equity
- -11.9%
- Quarterly earnings growth, YoY
- −62.3%
Risk and income
- Beta
- 0.63
- Typical daily move
- ±3.3%
- Typical 20-day move
- ±6.6%
- Dividend yield
- 3.10%
Westlake stock news this week
Coverage of Westlake this week reads positive: 6 positive, 3 neutral and 1 negative headlines.
- Westlake Royal Expands Distribution Partnership With BlueLinxTradingView, Sep 28
- New Mid-America® Gable Vents From Westlake Royal BuildingGlobeNewswire, Sep 28
- WLK Maintained by UBS -- Price Target Lowered to $98.00GuruFocus, Sep 25
- Bank of America Corp DE Purchases New Stake in Westlake Corporation $WLKMarketBeat, Sep 25
- Westlake plastic trim will be distributed exclusively by BlueLinx in key markets.Stock Titan, Sep 25
- Bluelinx Holdings Inc. and Westlake Royal Building Products USA Inc. Expand Relationship Through Exclusive Kleer® Pvc Trim Distribution Agreement and Market Expansion of Truexterior® Siding and Trim Productswww.marketscreener.com, Sep 24
Westlake peers
Westlake’s 6 largest industry peers by market value, with today’s move, GekkoIndex zone and gap to Gekko Fair Value.
| Stock | GekkoIndex zone | vs Fair Value |
|---|---|---|
| LINLinde | Accumulation | 2.8% below |
| ECLEcolab | Neutral | 8.2% above |
| APDAir Products and Chemicals | Accumulation | 11.9% below |
| DOWDow | Accumulation | 34.3% below |
| LYBLyondellBasell Industries | Accumulation | 12.3% below |
| ALBAlbemarle | Accumulation | 24.7% below |
A peer links to its own page where one exists.
Westlake stock FAQ
What is Westlake’s market cap?
Westlake’s market cap is $8.56B at the Sep 28, 2026 close of $66.84, with 127.8M shares outstanding.
What is the Westlake stock forecast?
The consensus analyst 12-month price target for Westlake is $92.81, +38.9% from the last close. Of the 11 firms that rated the stock in the last 90 days, 5 rate it a buy, 6 a hold and 0 a sell. Gekko doesn’t publish price predictions of its own.
Is Westlake stock overvalued or undervalued?
On Gekko’s estimate Westlake is undervalued: the Sep 28, 2026 close of $66.84 is 25.7% below Gekko Fair Value of $89.98. Gekko Fair Value is recalculated every trading day, and a gap inside 5% either way counts as about fair value.
When does Westlake report earnings next?
Westlake is expected to report on Oct 29, 2026, before the market opens (30 days away). Analysts expect earnings of $1.40 per share on revenue of $3.05B. Westlake beat the earnings estimate in 2 of its last 8 reports, moving 8.9% on average across the report.
What is Westlake’s 52-week high and low?
Westlake’s 52-week high is $124.23 and its 52-week low is $56.33; it closed at $66.84 on Sep 28, 2026, −12.1% over the past year. Over the last five years the shares peaked at $162.64 on Apr 9, 2024.
Is Westlake stock a buy right now?
Gekko describes the data; it does not make buy or sell recommendations. On the swing-trade checklist, 4 of the 5 items with data read as supportive (gekkoindex, fair value, earnings risk and seasonality) and 1 as a headwind (trend). The checklist is a description of current data, not a recommendation.
How this page works
During US trading hours the price at the top of the page is a delayed quote, refreshed every 15 minutes; everything else is rebuilt after each US market close. The GekkoIndex, Gekko Fair Value and the checklist are Gekko’s own, and the Gekko Brief is written by AI from this page’s data and checked against it before it is published. How Gekko’s data works →
See Westlake the way Gekko members do
Every GekkoIndex reading, insider trade, options bet and Congress disclosure plotted on the chart, plus the 5,800-name screener and trade planning tools.
Join 1,380 other traders using Gekko
Start Your FREE 7 Day Trial → Every feature unlocked. No credit card required.