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Gamma Trading as a Market Maker
Get out of your own head as the market participant (for now). What is Gamma? Gamma = the rate of change of delta. Think of Delta as the engine of a car and Gamma as the gas pedal. The harder you press the pedal, the faster the engine revs. In options, that means the more gamma you have, the faster delta will change as the stock moves. This means, Delta never stays still. If you're long gamma, for example, you're buying options from me, the trader, your delta will swing a lot as the underlying stock moves. If you're short gamma (from selling options), you're delta exposure will flip against you when the stock moves. You, as the market maker, are always going end up long or short gamma. And this is going to force you always manage your risk with dynamic hedging with stock. ## Gamma Scalping If you're long gamma: - Your position gains delta when the stock rises, and loses deltas when it falls. - So you're buying low, selling high (scalping stock around your option). - You bleed theta (time decay), but can "earn it back" if the underlying moves around enough. I hope this is starting to click into your head on how market makers have a huge impact on the stock... If you're short gamma: - You're forced to sell low, buy high to keep hedged. - That's painful if the stock is volatile. - Your edge here has to come from the premium you collected up front (selling options at high volatility) ## Key Points 1) Gamma is where the real risk sits. Directional risk (delta) can be hedged away instantly with stock. Gamma risk means you'll have to hedge over and over again as delta keeps changing. 2) Time vs movement Long gamma bleed s theta → you must get enough stock movement to cover the decay. Short gamma earns theta → but you must pray the stock doesn't whip around too much. 3) Market Makers Live Off It Market makers don't guess direction. They let their gamma + hedging determine whether they profit. - IF they're long options (long gamma), they make their edge from scalping volatility. - IF they're short options (short gamma), they make their edge by collecting theta and quoting wide enough to survive the hedge pain.
1 like • 20d
This post really helps me understand why this works. If I'm understanding correctly, the reason the underlying prices are so affected by these greeks and option activity is because option market makers are constantly adjusting their hedges buy bying and selling underlying shares, and have to do more of this buying/selling around the "areas of interest," expected move levels, and Max Reward/Pain?
0 likes • 23d
@Charles Antonini what are the details that generate this scan?
1 like • 22d
@Charles Antonini Thank you
Gextron Analysis
Hey @Ruben Leija, As you mentioned, looks like some changes this morning from what we saw last night. N and PTrans is lower, and the spot price is higher, putting it above PTrans level. This indicates a potential buy situation, however the area of interest at 645 potentially limits the reward and the next lower aoi is at 635, so our reward to risk is currently inadequate. Am I interpreting things correctly?
Gextron Analysis
1 like • 30d
I forgot to update the DEM line so those lines will be incorrect on the attached chart.
0 likes • 30d
Is it more desirable to buy as price transitions the N- or P-trans level or that the price is simply on the correct side of the transition level for the direction of the trade? This question assumes there is proper reward to risk in both scenarios.
Gextron Demo Training ZOom link
Zoom: https://us06web.zoom.us/j/82547431994?pwd=QUPB9wWIfN4FQNvHv0KRGxXkSnReWj.1
Gextron Demo Training ZOom link
0 likes • Sep 4
Thanks for the walkthrough @Ruben Leija. Very informative and helpful.
Who wants a Free Gextron Plan?
Hey team, I'm opening up 10 invite codes for traders here who'd like to get early access to Gextron on a free plan. 👉 What you’ll get on the Free plan: - Scope: QQQ + SPY + IWM - Support & resistance levels - Price targets - Unusual option tracking - 100 lookups per month - Email support If you’re interested, drop a comment below ⬇️ and I’ll DM you an invite code. ⚡️ Only looking for 10 traders this round—first come, first served!
Who wants a Free Gextron Plan?
2 likes • Sep 1
I’d be interested in it
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Josh Martin
3
39points to level up
@josh-martin-1504
Investor of many flavors

Active 3d ago
Joined Jan 1, 2025
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