Free PSA GEX - Live Public Storage Gamma Exposure
Free PSA GEX shows where modeled gamma exposure is concentrated in Public Storage options. Change expirations to compare the call wall, put wall, gamma flip, and strike profile around occupancy, property demand, financing costs, and interest rates.
How to use the PSA GEX tool
Search PSA
PSA 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
PSA GEX levels in detail
Data as of
Spot
$287.97
Call wall
$300
4.2% above spot
Put wall
$280
2.8% below spot
Gamma flip
$300.14
4.2% above spot
Net GEX
-$1K
negative gamma
Largest gamma by strike
- $280 -$920
- $270 -$351
- $290 -$247
- $310 $224
- $300 $112
Since the previous session (Sep 24)
- Spot up 1.3% ($284.30 to $287.97)
- Call wall unchanged at $300
- Put wall unchanged at $280
- Net GEX -$1K to -$1K
Reviewed by the QuantWheel research team. Modeled from listed PSA options data; not observed dealer inventory and not a forecast. Read how we compute PSA GEX levels.
Build your PSA GEX workspace
Add PSA Heatmap, Max Pain and other GEX views to a custom multi-ticker workspace.
Understanding PSA gamma exposure
Public Storage is classified in Self-Storage REITs within Real Estate. PSA options can respond to company earnings and changes in occupancy, property demand, financing costs, and interest rates. 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.
PSA GEX methodology and limitations
QuantWheel calculates PSA 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.
PSA GEX FAQ
What is PSA GEX?
PSA GEX estimates gamma exposure across listed PSA options using option gamma and open interest. It helps you compare how modeled exposure is distributed by strike and expiration. PSA GEX does not reveal actual dealer positions or predict where PSA will trade.
How do I read the PSA call wall and put wall?
QuantWheel labels the PSA call wall as the strike with the largest positive modeled GEX and the PSA put wall as the strike with the largest negative modeled GEX in your selected data. Compare both with the PSA price and expiration choices. They are reference levels, not guaranteed support or resistance.
What is the PSA gamma flip?
The PSA gamma flip is the price where modeled net gamma crosses zero for the selected PSA options data. Compare it with the current price and the shape of the strike chart. The PSA gamma flip is a model output, not a trading signal.
Which expirations should I use for PSA GEX?
Start with the nearest PSA expiration to study short-dated positioning, then add later expirations to compare a broader part of the options chain. Each selection changes which PSA contracts are included, so compare one expiration with a combined view before drawing conclusions.
Is the PSA GEX calculator free?
Yes. You can run up to three free PSA 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.