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Owl MasteryAbout Owl Mastery
Updated
Owl Mastery is a gamma exposure and key levels dashboard for US stocks and indexes. After each US market close, it publishes each covered stock's gamma levels, its 1-day range, four price signals and its key stats.
What it shows
Options dealers commonly hedge the options they hold by trading the underlying stock. Gamma exposure estimates how much of that hedging a $1 move could set off, strike by strike. Owl Mastery turns it into a short list of prices to watch: call resistance, put support, the HVL (high volatility level) and the gamma wall. Next to them it shows a 1-day range from IV30, the implied volatility of the expiry closest to 30 trading days out, and four signals from the daily price history: RSI, the distance from the 50-day average, 20-day volatility and the distance from the 52-week high.
The SPX page is a complete example, and the stocks list covers every ticker with data.
What is free and what needs a free account
Every stock page is free to read without an account. It shows:
- the price, change, performance and key stats
- the four signals
- for stocks with options data, the daily HVL, call resistance, put support, gamma wall and 1-day range, with each one's distance from the close
A free account adds the dashboard, with gamma exposure by strike, the levels for the nearest expiry alone, the top strikes, the price chart from one day to five years, ticker lists and a portfolio. Create a free account to use them.
Who it is for
Owl Mastery is for traders in US stocks and index options who want to know where options hedging may lean against a move or add to it. The learn section explains each level and signal in plain terms. Its articles on RSI, moving averages, volatility and the 52-week high also apply to crypto charts, though Owl Mastery itself covers US stocks and indexes only.
How often it updates
Once a day. Owl Mastery computes each stock's figures after the US market close, and they stay the same through the next session. The site keeps the latest snapshot only, with no history of past levels and no live prices during the day.
How the numbers are computed
The methodology lists every formula, the update schedule, and the assumptions behind the levels, such as how dealers are assumed to be positioned.
What Owl Mastery is not
Owl Mastery publishes market information for education. It does not give investment advice, does not know your finances or goals, and does not place trades. The levels are model outputs that can be wrong or out of date. Read the disclaimer before you use them.