Free WST GEX - Live West Pharmaceutical Gamma Exposure
Free WST GEX shows where modeled gamma exposure is concentrated in West Pharmaceutical options. Change expirations to compare the call wall, put wall, gamma flip, and strike profile around product demand, regulatory decisions, clinical developments, and reimbursement trends.
How to use the WST GEX tool
Search WST
WST is already entered. Keep it or enter another ticker, then select Search.
Select expirations
Choose one or more expiration dates to include.
Generate GEX
Select Generate GEX to view the chart and key levels.
Run up to 3 free GEX calculations per day. Need more?
Continue for free in the GEX demoWhat is Gamma Exposure (GEX)?
Gamma Exposure represents the sensitivity of an option's delta to changes in the underlying price. Market makers hedge their gamma exposure, creating support/resistance at high GEX strikes.
Key Levels:
- Call Wall: Strike with highest positive GEX (resistance)
- Put Wall: Strike with the largest put GEX, shown as the deepest negative bar (support)
- Gamma Flip: Where total GEX changes from negative to positive
Positive GEX: Market makers sell into rallies, buy into dips (stabilizing).
Negative GEX: Market makers buy into rallies, sell into dips (amplifying moves).
Select a ticker and expiration date, then click Generate GEX to see the analysis
Key levels
WST GEX levels in detail
Data as of
Spot
$361.78
Call wall
$360
0.5% below spot
Put wall
$340
6.0% below spot
Gamma flip
$320.31
11.5% below spot
Net GEX
$498
positive gamma
Largest gamma by strike
- $360 $502
- $340 -$46
- $380 $35
- $400 $22
- $330 -$19
Since the previous session (Sep 18)
- Spot down 0.1% ($362.31 to $361.78)
- Call wall unchanged at $360
- Put wall unchanged at $340
- Net GEX $43 to $498
Reviewed by the QuantWheel research team. Modeled from listed WST options data; not observed dealer inventory and not a forecast. Read how we compute WST GEX levels.
Build your WST GEX workspace
Add WST Heatmap, Max Pain and other GEX views to a custom multi-ticker workspace.
Want to compare strikes across expirations? View the WST GEX heatmap.
Understanding WST gamma exposure
WST provides options exposure to West Pharmaceutical, which operates in health care supplies. Earnings and shifts in product demand, regulatory decisions, clinical developments, and reimbursement trends can change option pricing and open interest. The GEX chart shows how modeled exposure is distributed for the contracts and expirations you include.
The WST call wall, put wall, and gamma flip depend on the contracts included in the calculation. Recompute the chart after changing expirations and compare the distribution around the current price. The output is positioning context rather than a forecast.
New to the concept? Start with our guides to gamma in options and the options Greeks.
WST GEX methodology and limitations
QuantWheel calculates WST GEX from the selected expirations, available options data and the formula displayed in the calculator. The result summarizes modeled gamma exposure by strike.
GEX is a model output, not observed dealer inventory or a price forecast. Open interest does not identify who owns an option, and the displayed call wall, put wall and gamma flip can change when the inputs or selected expirations change.
WST GEX FAQ
What is WST GEX?
WST GEX estimates gamma exposure across listed WST options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. WST GEX does not reveal actual dealer positions or predict where WST will trade.
How do I read the WST call wall and put wall?
QuantWheel labels the WST call wall as the strike with the largest positive modeled GEX and the WST put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the WST price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the WST gamma flip?
The WST gamma flip is the price where modeled net gamma crosses zero for the selected WST options data. Compare it with the current price and the shape of the strike chart. The WST gamma flip is a model output, not a trading signal.
Which expirations should I use for WST GEX?
Start with the nearest WST expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which WST contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the WST GEX calculator free?
Yes. You can run up to three free WST GEX calculations per day on the public tool. After using those calculations, continue for free in the GEX demo. Check the current QuantWheel pricing page for plan access details.