Read the whole exposure
Call walls, put walls and the gamma flip are drawn on price, so you see the level and the tape together.
by GEXfreakOptions levels for SPY · QQQ · IWM
Prism
Prism puts the whole options book on one chart: gamma exposure by strike, call and put walls, the gamma flip and volume profile for SPY, QQQ and IWM, with every data clock in view.
$19.50/mo billed annually · save 50% · Live books need membership
Why the name
A prism splits light.
Prism splits the book.
It reads every listed strike and expiry and turns the book into the levels on your chart: the call wall, the put wall and the gamma flip.
QQQ · Published session · Not live
One completed session, exactly as it was published.
How Prism works
From the options book
to your chart.
- 01
The book
Prism reads every listed strike and expiry, from the nearest session out to 90 days. Open interest and quotes come from the data feed; none are estimated.
- 02
The model
Gamma exposure is modeled per strike under a disclosed assumption: calls positive, puts negative. It is a model, not dealer inventory, and the chart says so.
- 03
The chart
Call walls, put walls and the gamma flip are drawn on price next to the volume profile, and each data clock stays visible.
Loading the latest published QQQ session
What you get
Build a plan around the levels.
Read positioning across expiries and keep an eye on the prices you trade.
Every strike, every expiry
Exposure across the listed chain out to 90 days, grouped into nearest, 14, 30 and 90-day windows.
Simple + Pro
Simple keeps to a focused level map. Pro adds strike-by-strike exposure, secondary walls and expiry comparisons.
From the Nasdaq to Tesla
QQQ, SPY and supported single names such as TSLA, with more equity symbols coming. Coverage varies by symbol.
Price alerts
Set your own price conditions. Phone push alerts, for when you step away from the screen, are in development.
Measured data speed
When a current stream is available, Prism measures and shows the delay from feed to collector. Old data is never shown as live.
Measurement unavailable
Two views, one membership
Your workflow,
your level of detail.
Get oriented in seconds.
Keep your attention on price with the essential layers.
- Major call walls, put walls and gamma flip
- Less to set up
- A focused view for marking your plan
Investigate the positioning behind each level.
Exposure at every strike and expiry window, secondary walls included.
- Exposure and secondary walls by strike
- Compare expiry windows and concentrations
- More layers for a detailed chart review
Hands on
Explore a published session, then check today.
The level explorer uses completed QQQ sessions. The same-day SPY tab shows price, volume, the call wall, put wall and gamma flip, five minutes delayed, when a current feed exists.
Explore the session
Choose a date and tap the levels to learn what they mean.
Explore controls
Learn
Levels in your plan.
QQQSep 9, 2026Historical
Price meets the flip
Flip ≤1 DTE 717.91
5m candles · XNAS · recorded model
3 min read
Gamma exposure, explained
Read modeled exposure beside price, with its limits in view.
SPYSep 10, 2026Historical
A wall approached from below
Put wall 760.00
5m candles · XNAS · recorded model
3 min read
Reading call and put walls
Find exposure concentrations and watch how price approaches them.
QQQSep 11, 2026Historical
Opened inside the band
GRC 715.00Call wall 710.00Put wall 700.00
5m candles · XNAS · recorded model
4 min read
Using the GRC band on a chart
See where gamma on the current book is concentrated, and how wide that zone is.
QQQSep 11, 2026Historical
Above, then back below
Flip ≤1 DTE 716.60
1m candles · XNAS · recorded model
3 min read
What changes at the gamma flip?
Inspect a model’s sign change without turning it into an entry signal.
QQQSep 11, 2026Historical
Where the session’s activity concentrated
717.48
717.12
716.76
716.40
716.04POC / VAH
715.68
715.32
714.96
714.60VAL
714.24
713.88
Value area Outside value area
Completed session · XNAS minute-close estimate
4 min read
Read the volume profile
Find where trading activity concentrated, then put today’s price in context.
Membership
Everything in Prism, one membership.
Simple, Pro and every available expiry window are included. Live books need membership; the public explorer stays free.
- SPY, QQQ, IWM
- Walls, flip, profile on price
- Nearest · 14 · 30 · 90-day windows
- Simple + Pro, one membership
- Watchlist + price alerts
- Honest clocks: stale data never shown as live
Annual · save 50%
$19.50 / month
$234.00 billed yearly
Save $234.00. 7-day first-payment refund.
Join Prism Monthly $39.00 Member? Sign in.Quick answers
Straight answers.
What is Prism?
Prism draws walls, flip and volume profile on SPY, QQQ and IWM price charts for entry and risk context. It is not a broker and does not send trade signals. Pricing.
What is GEX?
An estimate of where options sensitivity clusters by strike. It is a model, not dealer inventory, and it does not predict price. Guide.
Works with futures charts?
Yes, as ETF context beside your futures platform. ETF prices and ETF option exposures, not native ES, NQ or RTY gamma. You can keep it next to your futures chart. Methodology.
Simple vs Pro tiers?
They are not separate tiers. One membership includes both views, with the same access on monthly or annual billing.
Do I need to understand options first?
Start with the major levels in Simple mode. The guides explain gamma exposure, call and put walls, and the gamma flip with real sessions. Start with the basics.
Is the preview live?
The book above and the level explorer use completed, published QQQ sessions. The same-day SPY tab shows price and volume at least five minutes delayed when a current feed is available; it never substitutes an old session for today.
See how Prism fits your trading day.
Check the same-day SPY price preview with a five-minute delay.