Learn how dealer positioning actually moves price.

Gamma exposure measures how much hedging dealers are forced to do as price moves. Here is what GEX is, why its sign matters more than its size, and how to read it without the jargon.

Dealer gamma decides whether the market absorbs moves or amplifies them. Knowing which regime you are in tells you what kind of session to expect before you place a trade.

The gamma flip is the price where aggregate dealer gamma changes sign. Here is what it tells you, and the bigger role most tools give it that did not survive testing.

Options expiring today carry enormous gamma and almost no time value. Here is why same-day expiry concentrates hedging pressure and what that does to intraday price.

Market makers hedge the options they sell, and that hedging is mechanical, continuous, and measurable. It is the reason options positioning shows up in price at all.

A plain comparison of the gamma exposure maps traders use in 2026: what Skylit Heatseeker, Voltick, SpotGamma and FlowMonkey each put on screen, how each signs a strike, and which ones publish graded results with the misses included.

What the lid, the shelf and the apex are on a gamma exposure map, how each is calculated from the options chain, what each has been measured to do, and why FlowMonkey stopped calling them caps and floors.

How FlowMonkey records every options alert it shows members, freezes the entry price at the moment it is shown, and publishes the full day on a public receipts page, including the alerts that went nowhere. Counts, not win rates.

Options flow explained: what a print is, bought vs sold at the bid and ask, opening vs closing volume, sweeps and blocks, and why most prints cannot be classified at all. Measured on a real session's tape.

Vanna measures how an option's delta changes when implied volatility moves. Here is the sign for calls and puts, and why it can turn into dealer stock flow.

Charm is how an option's delta changes as time passes, even if the stock does not move. Here is how delta decay works and why it creates dealer hedging flow.

Max pain is the expiration price at which open options would be worth the least in total. Here is exactly how it is calculated, with a worked example.

Max pain is often sold as a magnet. Here is the hedging mechanism that can pull price toward strikes at expiry, and why max pain usually sits near price anyway.

A gamma squeeze is a rally fed by dealers buying stock to hedge calls they sold. Here is the mechanism, what it needs to start, and why it reverses so sharply.

Monthly options expiration falls on the third Friday. Here is what settles, when, how hedges roll off, and why the week after OPEX can trade differently.

Pin risk is not knowing if a short option that closes near its strike will be assigned. Here is how it happens, why after-hours matters, and how to avoid it.

The zero gamma level is the price where estimated dealer gamma would net to zero. Here is how it is computed, why tools disagree on it, and how to read it.

Net gamma exposure nets dealer calls against puts; absolute or total gamma adds them up. Here is what each measures and when the difference changes the read.

Delta exposure, or DEX, estimates the net directional position dealers hold from options. Here is how it is calculated, how it relates to gamma, and its limits.

Why traders talk about vanna and charm in the days before options expiration, what assumptions the story rests on, and when the flows are likely to be small.

Open interest is the number of option contracts still open. Here is how it is counted, when it updates, how each trade changes it, and how to read it.

Volume counts contracts traded today; open interest counts contracts still open. Here is how to read them together, including when volume exceeds OI.

The put/call ratio divides put activity by call activity. Here are the main versions, why index and equity ratios differ, and why it is read as contrarian.

Implied volatility is the volatility an option's price implies. Here is how it is derived, how to turn it into a daily move, and what makes it rise or fall.

IV rank places today's implied volatility in its 52-week range; IV percentile counts the days it was lower. Here is how each works and why they disagree.

Volatility skew is how implied volatility differs across strikes. Here is why equity puts carry richer IV than calls, how skew is measured, and why it moves.

IV crush is the sharp drop in implied volatility after a known event passes. Here is why it happens, a worked earnings example, and why it can beat a right call.

The volatility smile is the curve of implied volatility across strikes. Here is why it exists, what it says about fat tails, and how it shifts as price moves.

Volatility term structure is implied volatility across expiries. Here is what contango and backwardation mean for IV and VIX futures, and what inversion signals.

Realized volatility measures how much a price actually moved. Here is the close-to-close method, range-based versions, picking a window, and comparing it to IV.

The options Greeks measure how an option's price responds to changes in price, time, volatility and rates. A plain guide to each one and how they interact.

Delta is how much an option's price moves for a one-dollar move in the stock. Here are its three readings, how time and volatility change it, and how it is used.

Theta is the daily loss in an option's value as time passes. Here is why decay speeds up near expiry, which options decay fastest, and how weekends are handled.

Vega is how much an option's price changes for a one-point move in implied volatility. Here is why long-dated, at-the-money options carry the most vega.

SPX and SPY options both track the S&P 500 but differ in size, exercise style, settlement and tax treatment. Here is how they compare and why each matters.

0DTE options are contracts on their final trading day. Here is which products list them daily, how they settle, why they move so fast, and the risks involved.

An options market maker quotes bids and offers all day and hedges the risk it takes on. Here is how they earn the spread, manage inventory and affect price.

Delta hedging offsets an option's directional risk with the underlying. Here is a step-by-step example, why the hedge drifts, and what rebalancing costs.

Gamma scalping means owning options and re-hedging delta as the stock moves to lock in gains from movement. Here is how it works and what it needs to pay.

Long gamma means gaining from movement; short gamma means gaining from calm. Here is how each P&L behaves and how dealer gamma shapes the kind of day you get.

Unusual options activity is trading far above a contract's normal volume or open interest. Here is how it is defined, what it can reveal, and its limits.

A sweep is one order split across exchanges to fill fast; a block is one large trade at a single price. Here is how each one prints and what it suggests.

Dark pool prints are stock trades executed off-exchange and reported after the fact. Here is how they are reported, what they can reveal, and their limits.

The earnings implied move is the stock move options price in for a report. Here is how to read it from the straddle, how to isolate the event, and its limits.

Triple witching is the quarterly third Friday when index futures, index options and stock options expire together. Here is what happens and why volume spikes.

VIX futures and options expire on a Wednesday and settle to a special opening quote from SPX options. Here is how the date is set and why settlement surprises.

An options chain lists every strike and expiry for an underlying with its prices and statistics. Here is what each column means and how to read a chain quickly.

ATM, ITM and OTM describe where an option's strike sits relative to price. Here is what each means for calls and puts, and how each one behaves differently.

Dealer positioning estimates the options exposure market makers hold and the hedging it implies. Here is how it is estimated, what it shows, and its limits.

When dealers are short gamma, falling prices force them to sell more. Here is the hedging loop, why rising volatility adds to it, and why it is lopsided.

Stocks sometimes close right at a round strike on expiration day. Here is why open interest piles up at round numbers, how hedging can pin, and when it fails.

The JPM collar is a large quarterly S&P 500 options hedge run by a JPMorgan fund. Here is how it is built, when it resets, and why traders watch its strikes.

Options flow tracks option trades; order flow tracks buying and selling pressure in the underlying. Here is what each measures, how they link, and blind spots.

At-the-money gamma grows sharply into expiry, so short-dated options often dominate a gamma map. Here is the math, what it means, and when monthlies matter.