Free MCO GEX - Live Moody's Gamma Exposure
Free MCO GEX helps you examine modeled Moody's gamma exposure by strike. Select one or more expirations to compare net GEX, the call wall, the put wall, and the gamma flip around trading activity, market volatility, listings, and transaction volumes.
How to use the MCO GEX tool
Search MCO
MCO 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
MCO GEX levels in detail
Data as of
Spot
$464.26
Call wall
$480
3.4% above spot
Put wall
$450
3.1% below spot
Gamma flip
$465.02
0.2% above spot
Net GEX
-$284
negative gamma
Largest gamma by strike
- $450 -$2K
- $480 $2K
- $440 -$989
- $490 $915
- $460 -$142
Since the previous session (Oct 8)
- Spot up 1.2% ($458.69 to $464.26)
- Call wall unchanged at $480
- Put wall unchanged at $450
- Net GEX -$2K to -$284
Reviewed by the QuantWheel research team. Modeled from listed MCO options data; not observed dealer inventory and not a forecast. Read how we compute MCO GEX levels.
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Understanding MCO gamma exposure
The MCO options chain represents Moody's and its exposure to trading activity, market volatility, listings, and transaction volumes. Its GICS classification is Financial Exchanges and Data. Use the chart to identify where modeled exposure is concentrated and whether that concentration is consistent across expiration choices.
New to the concept? Start with our guides to gamma in options and the options Greeks.
MCO GEX methodology and limitations
QuantWheel calculates MCO 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.
MCO GEX FAQ
What is MCO GEX?
MCO GEX estimates gamma exposure across listed MCO options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. MCO GEX does not reveal actual dealer positions or predict where MCO will trade.
How do I read the MCO call wall and put wall?
QuantWheel labels the MCO call wall as the strike with the largest positive modeled GEX and the MCO put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the MCO price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the MCO gamma flip?
The MCO gamma flip is the price where modeled net gamma crosses zero for the selected MCO options data. Compare it with the current price and the shape of the strike chart. The MCO gamma flip is a model output, not a trading signal.
Which expirations should I use for MCO GEX?
Start with the nearest MCO expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which MCO contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the MCO GEX calculator free?
Yes. You can run up to three free MCO 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.