Session open // 17:40 UTC Open to everyone · No sign-up

Open with no sign-up

Free tools

28 tools work fully in your browser · the calculators do not send your numbers to a server and do not keep them. Only the ticker goes to the server, to get its price. One thing is paid: the daily market map before the open.

Calculate
position size and breakeven before you hit buy.
Read
Where the options walls and the Gamma Flip sit relative to your price.
Learn
Whatever you didn't understand about a number, you'll find explained in the glossary and the Academy.

Calculate before you enter

The trade's numbers before you place it: fair price, position size and breakeven.

Options calculator

Options Calculator No sign-up

Prices the contract and gives the Greeks (Delta · Gamma · Theta · Vega) for any strike and expiry.

When to use it?

Before entering: how much does the contract price change if the stock moves 1% or one day passes?

Open the tool

Position size calculator

Position Size Calculator No sign-up

Works out the number of contracts or shares from your capital, risk percentage and stop-loss distance.

When to use it?

Before every trade: how much do I buy so my possible loss stays within my limit?

Open the tool

Breakeven calculator

Breakeven Calculator No sign-up

Finds the price where the position breaks even after premium and costs.

When to use it?

When sizing up a contract: where does the stock need to get so I don't lose?

Open the tool

Earnings IV Crush Calculator

Earnings IV Crush Calculator no sign-up

Calculates how far the stock must move after an earnings report so your contract doesn't lose when implied volatility collapses.

When to use it?

Before buying an option ahead of earnings: is the move needed bigger than what the market is pricing?

Open the tool

The Greeks

Option Greeks No sign-up

An interactive guide to each Greek: what it measures and how it changes with time and volatility.

When to use it?

When a number shows up in the calculator and you don't know what it means.

Open the tool

Read the market now

What the engine publishes for free: options walls, the Gamma Flip and today's read.

Scenario lab

Scenario Lab No sign-up · 3 tries a day

Enter a ticker to see the Call Wall, the Put Wall and the Gamma Flip, and how the trade's success rate changes at each level.

When to use it?

Before setting a target and stop loss: where are the walls relative to your price?

Open the tool

Price Structure Tools

Price Structure No sign-up

Sixteen tools on a live chart: Fair Value Gaps, Order Blocks, Liquidity Sweeps and Market Structure Shifts, each with one line saying what it found.

When to use it?

Before you buy a breakout: are stop orders waiting above the high? Did price leave a gap below?

Open the tool

Crypto market

Crypto Market No sign-up

The crypto market right now: Bitcoin, dominance, market breadth and sectors, then scanning tools and a report for every liquid coin.

When to use it?

When you trade crypto or mining stocks: is the rally broad, or led by a few coins?

Open the tool

Gamma levels

Gamma Levels No sign-up

Gamma Exposure (GEX) for the major indexes: the current regime and the nearest walls.

When to use it?

Morning: are dealers hedging against the move or with it, and where are the nearest walls?

Open the tool

US Macro Today

US Macro Today Without sign-up

Net liquidity, the SOFR rate, the 10-year yield, the next Treasury auction and oil on one page.

When to use it?

Before the session: do the economy and liquidity support stocks today, or weigh on them?

Open the tool

Bonds Today

Bonds Today No sign-up

Treasury auction results: bid-to-cover, tail and indirect bidders, with the Treasury account and reverse repo.

When to use it?

When yields jump: did demand for US debt weaken?

Open the tool

Oil Today

Oil Today No sign-up

Brent and WTI prices, oil volatility, the CRB commodity index and roll cost.

When to use it?

When oil moves hard: is the Hormuz risk priced into stocks?

Open the tool

Earnings Today

Earnings Today No sign-up

This week's earnings dates and the move options price, against the actual move in past reports.

When to use it?

Before you hold a stock into its earnings report.

Open the tool

Unusual Options Activity

Unusual Options Today No sign-up

The five most active stocks in options today: premium, contract count and call share.

When to use it?

When you want to see where large options bets cluster today.

Open the tool

Does price respect options walls?

Gamma Walls Study No sign-up

24,628 tests on US stocks: does price stop at an options wall more often than at a random level?

When to use it?

Before you build a trade on a wall: what happened in the past?

Open the tool

Crypto Volatility

Crypto Volatility No sign-up

The DVOL index for Bitcoin and Ethereum: volatility priced by options and the expected range for a day and a week, against realized volatility.

When to use it?

Before you trade crypto: is the market calm or tense?

Open the tool

Reports No sign-up

The latest report, published in full without signup: the call, the index levels and what happened after · new ones are for members.

When to use it?

Fifteen minutes pre-market: what does positioning say about the session?

Daily card

Daily Card No sign-up

A one-page summary you can share: the key numbers for today's session.

When to use it?

When you want the summary, not the detail.

Open the tool

Market Hours No sign-up

US session hours in your local time, with daylight saving · pre-market, the session and after-hours.

When to use it?

To know when liquidity is real and when thin volume misleads.

Market News No sign-up

A roundup of the top US market news, updated throughout the day.

When to use it?

When the market moves and you don't know why.

Learn and practice

A glossary, an Academy and exercises that lock in what you read before you risk a dollar.

Glossary

Glossary No sign-up

Every financial term on the platform, with one clear definition and its English name.

When to use it?

When you read a word you don't know in a report or a tool.

Open the tool

Academy

Academy No sign-up

Learning tracks, lessons, candlestick patterns and indicators, from scratch.

When to use it?

Before you pay: understand what the platform's tools show.

Open the tool

Options Strategy Explorer

Options Strategy Explorer No sign-up

Fifteen options strategies: when to use each one and its maximum profit and loss.

When to use it?

When you know your direction but not which contract fits it.

Open the tool

Pattern scan

Pattern Scan No sign-up

Scans the chart and names the candlestick patterns and technical patterns it finds.

When to use it?

When you see a shape on the chart and don't know its name or meaning.

Open the tool

Reading practice

Practice No sign-up

Short exercises on reading patterns and levels, with instant answers.

When to use it?

Ten minutes a day to lock in what you learned.

Open the tool

FAQ

FAQ No sign-up

What traders ask before subscribing: recommendations, data, broker and payment.

When to use it?

Before you ask support.

Open the tool

On your phone and in your inbox

The platform where you are, with no app store and no download.

Mobile app

Mobile App No sign-up

The platform on your phone screen with no app store and no download: install it from your browser in seconds.

When to use it?

To read today's market read before the bell, on the go.

Open the tool

Newsletter No sign-up

A market read in your inbox when it is worth sending, not every day.

When to use it?

If you don't open the platform every day and don't want to miss what matters.

Open the tool

Finviro tools FAQ

What are the free tools on Finviro?

An options calculator, a breakeven calculator, a position size calculator, an Options Greeks library and US market hours in your time zone. All open with no sign-up.

What is the Call Wall and why does it matter to me?

The Call Wall is the price where the most open call contracts cluster. Dealers hedge there. Knowing it before a trade tells you where that hedging concentrates above price, and it is a map, not a line that stops the stock.

How does the scenario lab work?

Pick a test stock price. The lab shows the gamma regime at that price and where it sits against the two walls and the Gamma Flip. It also shows what happens to your contract's value. It is for members because it reads the symbol's options book, computed on the platform.

Are my numbers sent to the server when I use the calculators?

No. The calculators run in your browser, so your capital and entry price never leave your device.

Are these tools buy or sell recommendations?

No. The tools explain and simplify the data; the decision and its responsibility are yours. We show our methodology and a record of what we published and what happened next on the Methodology and Track record pages.