Free CRL GEX - Live Charles River Gamma Exposure
Use free CRL GEX to compare modeled gamma exposure by strike for Charles River. Choose one or more expirations, then review the call wall, put wall, gamma flip, and exposure in the context of product demand, regulatory decisions, clinical developments, and reimbursement trends.
How to use the CRL GEX tool
Search CRL
CRL 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
CRL GEX levels in detail
Data as of
Spot
$292.61
Call wall
$290
0.9% below spot
Put wall
$270
7.7% below spot
Gamma flip
$259.08
11.5% below spot
Net GEX
$1K
positive gamma
Largest gamma by strike
- $320 $587
- $270 -$357
- $290 $332
- $280 $256
- $310 $192
Since the previous session (Sep 28)
- Spot down 0.7% ($294.59 to $292.61)
- Call wall unchanged at $290
- Put wall unchanged at $270
- Net GEX $1K to $1K
Reviewed by the QuantWheel research team. Modeled from listed CRL options data; not observed dealer inventory and not a forecast. Read how we compute CRL GEX levels.
Build your CRL GEX workspace
Add CRL Heatmap, Max Pain and other GEX views to a custom multi-ticker workspace.
Understanding CRL gamma exposure
Charles River is classified in Life Sciences Tools and Services within Health Care. CRL options can respond to company earnings and changes in product demand, regulatory decisions, clinical developments, and reimbursement trends. Use the GEX chart to see whether modeled positive and negative exposure is concentrated at a few strikes or spread across the selected chain.
The CRL 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.
CRL GEX methodology and limitations
QuantWheel calculates CRL 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.
CRL GEX FAQ
What is CRL GEX?
CRL GEX estimates gamma exposure across listed CRL options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. CRL GEX does not reveal actual dealer positions or predict where CRL will trade.
How do I read the CRL call wall and put wall?
QuantWheel labels the CRL call wall as the strike with the largest positive modeled GEX and the CRL put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the CRL price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the CRL gamma flip?
The CRL gamma flip is the price where modeled net gamma crosses zero for the selected CRL options data. Compare it with the current price and the shape of the strike chart. The CRL gamma flip is a model output, not a trading signal.
Which expirations should I use for CRL GEX?
Start with the nearest CRL expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which CRL contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the CRL GEX calculator free?
Yes. You can run up to three free CRL 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.