ATLASStock market simulator: practice with $10,000 of virtual money
The ATLAS stock market simulator gives you $10,000 of virtual cash to invest at real market prices, so you can learn how positions behave without risking real money.
What it does
You pick companies, buy and sell them with virtual money, and watch the result against real prices. Every trade is recorded, so you can look back at what you did and why. It suits students, first-time investors and anyone who wants to test an idea before using real savings.
The point is not to win a game. The point is to feel what a 4% bad week or a 12% bad month looks like in dollars on your own balance, which is the lesson a textbook cannot teach.
Worked example with live data
Real ATLAS numbers, prices as of Oct 26, 2026.
Example: $10,000 in AAPL at $346.86 buys about 28.8 shares. ATLAS puts the value of that position after 21 trading sessions between $9,692 and $10,403 in the middle half of cases, and between $9,102 and $11,076 in nine cases out of ten. The model gives a 53% chance of finishing the month higher.
| Measure | Value |
|---|---|
| Virtual cash | $10,000 |
| Shares bought | 28.8 |
| Middle outcome after 21 sessions | $10,041 |
| Likely range (middle 50%) | $9,692 – $10,403 |
| Wide range (90%) | $9,102 – $11,076 |
| Chance higher in 21 sessions | 53% |
How ATLAS calculates it
Orders run against real daily closing prices stored by ATLAS, not invented prices. In "today's market" mode your order fills at the latest close and pending orders are checked with each new close. In "time travel" mode you choose a past date and move forward day by day; the chart never shows you the future.
Next to each position ATLAS shows a 30-day range from the same calibrated model used across the app: it assumes the market's long-run return of about 7% a year for every stock and lets the stock's own volatility set how wide the range is. That keeps the simulator honest: it never pretends to know which stock will win.
Limits you should know
Orders fill at daily closes, so you cannot practice intraday timing, and there are no market impact, taxes or fees. Virtual money also feels different from real money: most people take more risk when nothing is at stake.
Where it sits in the plans
Practice is available on every plan. The Free plan keeps up to 10 positions; larger portfolios need Starter or above.
Run it on your own numbers
Create an account to use this tool with your stocks, your amounts and your horizon.
Get started →Plans from €3.99 a month.
Frequently asked questions
Is there a stock market simulator with real prices?
Yes. The ATLAS simulator uses real daily closing prices and starts you with $10,000 of virtual money. You can trade today's market or travel back to a past date and move forward without seeing the future.
How much virtual money do you start with?
$10,000. It is enough to build a small diversified portfolio and small enough that a single bad position visibly matters.
Can I use a stock market simulator for a class or a school project?
Yes. Students use it to learn position sizing, diversification and risk before investing real money. Teachers who want a shared leaderboard can look at the ATLAS university challenges.
Does a simulator predict how I would do with real money?
No. It teaches mechanics and risk, but real investing adds fees, taxes and emotions that a simulator cannot reproduce.
Related tools
- Paper tradingPaper trading means placing practice trades with pretend money. ATLAS does it at real closing prices and shows the dollar risk of each trade before and after you place it.
- Portfolio simulatorA portfolio simulator shows the range of values your holdings could reach, not a single forecast. In ATLAS you enter any stocks and quantities and simulate horizons from one day to 20 years.
- Daily lessonsATLAS lessons are short on purpose: around two minutes each, one idea, one question, and numbers taken from real stocks and, once you sign in, from your own portfolio.
Stocks used in this example
Open any of them to see the full public page, with fair value, odds and a one-year chart:
Not investment advice. ATLAS estimates come from statistical models and public data; they can be wrong and past results do not predict future ones. Disclaimer