Free CB GEX - Live Chubb Gamma Exposure
Use free CB GEX to compare modeled gamma exposure by strike for Chubb. Choose one or more expirations, then review the call wall, put wall, gamma flip, and exposure in the context of underwriting, claims, pricing, and investment income.
How to use the CB GEX tool
Search CB
CB 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.
What 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
CB GEX levels in detail
Data as of
Spot
$341.20
Call wall
$345
1.1% above spot
Put wall
$335
1.8% below spot
Gamma flip
$338.39
0.8% below spot
Net GEX
$5K
positive gamma
Largest gamma by strike
- $345 $7K
- $335 -$5K
- $355 $3K
- $325 -$2K
- $350 $1K
Since the previous session (Oct 8)
- Spot down 0.6% ($343.43 to $341.20)
- Call wall unchanged at $345
- Put wall unchanged at $335
- Net GEX $8K to $5K
Reviewed by the QuantWheel research team. Modeled from listed CB options data; not observed dealer inventory and not a forecast. Read how we compute CB GEX levels.
Continue with CB options analysis
Try the GEX tools on sample tickers. No account needed.
$1 for 7 days • Cancel anytime • 14-day money-back guarantee
Understanding CB gamma exposure
The business exposure behind CB includes property and casualty insurance. That connects the options chain with underwriting, claims, pricing, and investment income. Compare the positive and negative GEX bars by strike instead of reading one wall without the rest of the selected profile.
New to the concept? Start with our guides to gamma in options and the options Greeks.
CB GEX methodology and limitations
QuantWheel calculates CB 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.
CB GEX FAQ
What is CB GEX?
CB GEX estimates gamma exposure across listed CB options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. CB GEX does not reveal actual dealer positions or predict where CB will trade.
How do I read the CB call wall and put wall?
QuantWheel labels the CB call wall as the strike with the largest positive modeled GEX and the CB put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the CB price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the CB gamma flip?
The CB gamma flip is the price where modeled net gamma crosses zero for the selected CB options data. Compare it with the current price and the shape of the strike chart. The CB gamma flip is a model output, not a trading signal.
Which expirations should I use for CB GEX?
Start with the nearest CB expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which CB contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the CB GEX calculator free?
Yes. You can run up to three free CB 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.