gex: what it is
What problem it solves
Options trading requires you to track many things at once: where dealers are positioned, where the market thinks volatility is going, where unusual activity is concentrated, what the underlying company looks like fundamentally, what insiders are doing. Most tools that aggregate this cost money. gex does it for free using publicly available delayed data.
What it covers
- The 100 most liquid US options tickers (SPY, QQQ, NVDA, TSLA, AAPL, MSFT, etc.)
- Options chains with greeks (delta, gamma, theta, vega)
- Dealer gamma exposure (GEX), flip strike, max pain
- Unusual options flow events
- Implied vs realized volatility comparison
- Sector-level positioning
- Insider transactions, fundamentals, earnings, dividends
- Daily summary briefings
What it is not
- Not real-time. Data refreshes every 15 minutes during US market hours. For 0DTE scalping you need a real-time tool that costs money.
- Not a broker. You cannot place trades through gex. It is analytics only.
- Not investment advice. It computes metrics. You decide what to do with them.
Where it sits in the market
Closest paid competitor: GamX, a French tool charging €169 per month. It covers similar analytics with real-time data. gex covers the same analytics with 15-minute delayed data and is free.
Other adjacent tools: Unusual Whales ($48/mo, focus on flow), OptionAlpha (education + automation), MarketChameleon ($60-200/mo, screeners), OptionStrat ($97/mo, strategy modeling). Each has overlap with gex on parts of the surface; gex covers a broad subset of all of them for free.
Why we built it free
Two reasons. First, the market for retail options analytics is much larger than the few hundred users any single paid competitor captures. By being free we reach users that would never pay €169/mo. Second, the cost of running gex on delayed data is low (the server costs a few tens per month total, no data subscription required), so we can afford to keep the basic tier free indefinitely.
What is planned (Pro tier)
A Pro tier is in the roadmap but not yet launched. Likely features:
- Coverage of the full US options universe (around 3,000 tickers) instead of just the top 100
- Larger watchlist and alert limits
- Optional real-time data via a bring-your-own-broker integration so users with brokerage accounts can use their own data feed
- Programmatic API access
Pricing target: well below GamX's €169/mo, with a 14-day cooling-off period and standard EU consumer rights.