By traders, for traders · SPX gamma · 9:20 New York
We mark
the zones.
You, the method.
Three S&P 500 prices every market day: Call Wall, Put Wall and the daily flip, computed from that same morning's option chain. No data to buy, nothing to process. In your inbox at 9:20 New York, before the open. What you do when price gets there is your system's call, not ours.
Three S&P 500 gamma zones in your inbox before the open.
Free every day. No card. One-click unsubscribe.
General information for educational purposes. Not investment advice or a recommendation.
Want Gamma Max, the month, NDX or the zones on your screen? See the plans in the works.
How they are computed
Dealer hedging, in three zones
Market makers hedge their option book by buying and selling the underlying. That hedging is mechanical, not an opinion. Knowing where it concentrates describes the zones where price tends to change behaviour. Every morning we give you those three zones.
Dealer hedging marks the zones where price tends to change behaviour.
The regime switch
The price where dealer gamma changes sign. Above it their hedging dampens moves and the range compresses. Below it, it amplifies them.
Above it the range compresses. Below it, moves amplify.
The largest call gamma
The strike with the most call gamma above price. It is where dealer hedging concentrates the most above price.
The strike with the most call gamma above price.
The largest put gamma
The strike with the most put gamma below price. It marks where hedging flow stops cushioning a decline and starts accelerating it.
The strike with the most put gamma below price.
Before the open you know which price concentrates gamma above, which one below and from which one the market changes character. The rest is your method.
Before the open you know where gamma concentrates above, below and where the market changes character.
Closing recap · Friday 25 Sep 2026
What price did with the zones
Every afternoon we post on X what the S&P 500 did with the three levels we sent that morning. This is a real day, not a sample: the levels are the ones from the 9:20 New York edition and the candles are that session's, five minutes each.
A strong support to look for rejection
Both levels at the same price: the hedging that slows a drop and the regime change coincide. That morning it read as the zone to wait for the rejection, not to front-run it. The low was 7,693, and it came back.
Far from price: a zone for exits
46 points above the open, the upper wall marked how far an upside run could stretch before meeting hedging against it: a reference for getting out, not for getting in. It touched it seven times and closed right underneath.
Not every day looks like this
Of the 21 sessions since 4 September, price reached a wall and turned in 9, broke one the same day in 8 and never reached either in 4. That is why we post the close every day, not just the good ones.
These are readings of that session, not a recommendation: entry, exit and risk are your system's call. Candles are the S&P 500 cash index, the same one the option chain is written on. Daily recaps on @OpenGEX.
No hype
Data, not opinions
What you get comes from the option chain, not from anyone's head. That is why it can be checked, and why it does not change with the mood of the day.
It comes from the option chain, not from anyone's head. It can be checked.
Every strike, not a sample
Open interest and greeks for the entire SPX option chain, strike by strike. The profile you see is the one there is.
Computed the same day
Computed from the session's own chain at 9:20 New York. What you read is today's, not yesterday's close.
Nobody tells you buy or sell
We give you the prices where hedging changes behaviour. What to do with them is up to you and your system.
We give you the prices where hedging changes behaviour. What to do with them is up to you.
Plans in the works
Three ways to get the zones
None of them can be bought yet. Joining a list commits you to nothing: one email the day it launches, and access before anyone else. The free newsletter, below, already works.
None can be bought yet. Joining commits you to nothing. Swipe to compare.
Newsletter In the works
By email. For those who prepare the session by reading.
- Included: Everything in the free newsletter
- Included: Gamma Max of the day
- Included: Zones up to the monthly and quarterly expiries
- Included: The whole of NDX, with its own headline and reading
- Included: The day's regime explained, not just the number
Pro Most complete
Founder price · waitlistFor the first to join. Afterwards, 39 € a month
On screen. For those who want the zones where they trade.
- Included: Everything in the Newsletter plan
- Included: Web platform with the day and the month on one screen
- Included: NinjaTrader indicator
- Included: Chrome extension: the zones on your TradingView chart
- Included: SPX and NDX, with the data from before the open
Advance In the works
For those who want live data and in their own code. Personal use.
- Included: Everything in the Pro plan
- Included: API with your own key
- Included: Refresh every 15 minutes during the session
- Included: The full strike chain, in browsable charts
We are getting everything ready for launch. Join the list for the plan you want and you will be among the first in. Nobody pays anything until it launches.
Waitlist
Tell us which plan you want
A single email the day that plan launches, with priority access and, for Pro, the founder price. In the meantime you get the free newsletter every morning; if you already do, we just make a note.
One email the day the plan launches. Meanwhile, the free newsletter.
No commitment and no card. One-click unsubscribe from any email.
Available today
The free newsletter
The only thing that already works, and it stands on its own: Call Wall, Put Wall and the daily flip of the S&P 500 every morning at 9:20 New York, with the previous session's candles over the levels and the gamma profile by strike. No card.
The three S&P 500 zones every morning at 9:20 New York. No card.
One email per market day. One-click unsubscribe.
Before you ask
What people usually ask
Is this a buy or sell signal?
No. These are the prices where dealer hedging changes behaviour. What to do when price gets there is your method's call, not ours. We give no recommendations of any kind.
Do I need to know options?
No. You get three prices and a chart with one line that says how to read them. If you want the why, it is explained above.
When do the paid plans launch?
No date. We build them in the order the waitlist says people want them, which is why we show the prices now. Joining commits you to nothing and nothing is charged.
What happens when I join a list?
You get an email to confirm your address. From then on you receive the free newsletter every morning. The day your plan launches, a single email with the link; for Pro, at the founder price if you are among the first.
What if it is not for me?
Unsubscribe with one click from any email. No card, no trial that expires and no small print.
We mark the zones.
You bring the method.
Three S&P 500 prices before the open. Free, every market day, no card. By traders, for traders.
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