Free MRSH GEX - Live Marsh McLennan Gamma Exposure
Free MRSH GEX shows where modeled gamma exposure is concentrated in Marsh McLennan options. Change expirations to compare the call wall, put wall, gamma flip, and strike profile around underwriting, claims, pricing, and investment income.
How to use the MRSH GEX tool
Search MRSH
MRSH 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
MRSH GEX levels in detail
Data as of
Spot
$199.31
Call wall
$200
0.3% above spot
Put wall
$185
7.2% below spot
Gamma flip
$204.19
2.5% above spot
Net GEX
-$407
negative gamma
Largest gamma by strike
- $185 -$2K
- $200 $746
- $190 $570
- $195 $143
- $180 $67
Since the previous session (Oct 16)
- Spot up 5.2% ($189.50 to $199.31)
- Call wall $190 to $200
- Put wall unchanged at $185
- Net GEX $6K to -$407
Reviewed by the QuantWheel research team. Modeled from listed MRSH options data; not observed dealer inventory and not a forecast. Read how we compute MRSH GEX levels.
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Understanding MRSH gamma exposure
Marsh McLennan is classified in Insurance Brokers within Financials. MRSH options can respond to company earnings and changes in underwriting, claims, pricing, and investment income. Use the GEX chart to see whether modeled positive and negative exposure is concentrated at a few strikes or spread across the selected chain.
New to the concept? Start with our guides to gamma in options and the options Greeks.
MRSH GEX methodology and limitations
QuantWheel calculates MRSH 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.
MRSH GEX FAQ
What is MRSH GEX?
MRSH GEX estimates gamma exposure across listed MRSH options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. MRSH GEX does not reveal actual dealer positions or predict where MRSH will trade.
How do I read the MRSH call wall and put wall?
QuantWheel labels the MRSH call wall as the strike with the largest positive modeled GEX and the MRSH put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the MRSH price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the MRSH gamma flip?
The MRSH gamma flip is the price where modeled net gamma crosses zero for the selected MRSH options data. Compare it with the current price and the shape of the strike chart. The MRSH gamma flip is a model output, not a trading signal.
Which expirations should I use for MRSH GEX?
Start with the nearest MRSH expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which MRSH contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the MRSH GEX calculator free?
Yes. You can run up to three free MRSH 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.