🧪 Practice first: paper trading and starting small

🎯 In 30 seconds: Paper trading means placing pretend trades with fake money at real market prices. It is the cheapest way to learn the buttons, test a set of rules and find your mistakes. But paper results flatter you: fills are too easy, costs are often missing, and losing fake money does not hurt. Make practice honest by trading the size you would really trade, logging every trade, subtracting realistic costs and never resetting the account. Then move to real money in stages, starting with positions so small that losses are cheap lessons.

What paper trading is, and what it is for

A paper trading account, also called a simulator or demo account, works like a real brokerage account with fake money. You see real (sometimes slightly delayed) prices, place orders, and track a portfolio. Nothing you do reaches the real market.

It is good for three things:

• Learning the mechanics. Order tickets, order types, time in force, what a partial fill looks like. Mistakes here cost nothing. See Order types in depth.
• Testing a set of rules forward in time. A backtest runs rules over past data. Paper trading runs them on days you have not seen yet, which is a fairer test.
• Building habits. Writing a plan before each trade, keeping a journal, reviewing every week.

It is not good at one thing: telling you how you will behave when real money is at stake.

Kinds of practice tools

• Broker paper accounts. Many brokers offer a simulated version of their real platform. You learn the exact screens you will use later.
• Stand-alone simulators. Websites and apps with fake portfolios, like the site's paper portfolio. Simple, and fine for testing rules and building habits.
• Chart replay. Some charting tools replay past days bar by bar, so you can practice decisions without knowing what comes next. Faster than waiting for live markets, but easy to cheat by peeking ahead.
• Backtesters. These apply fixed rules to years of history in seconds. They test rules, not you. Use one alongside paper trading, not instead of it.

Why paper results flatter you

Expect your real results to be worse than your paper results. Here is why.

• Fills are too easy. Many simulators fill your limit order as soon as the price touches it. In the real market, other orders at that price may be ahead of yours, and you may not fill at all. Some simulators also fill market orders at the last price instead of the ask or bid.
• No market impact. A simulated order for 5,000 shares of a thin stock fills at the quote. A real one would push the price against you. See Bid, ask and liquidity.
• Missing costs. Spreads, slippage on stops, fees, margin interest and taxes are often left out. See What trading really costs.
• No fear. Holding a losing position is easy when the money is fake. With real money, people move stops, sell winners too early and hold losers too long. See Trading psychology.
• Too much fake money. Many simulators start you with $100,000. If your real account will be $2,000, trading $20,000 positions teaches you nothing useful.
• The reset button. Wiping out an account and starting again removes the one lesson that matters most: what a big loss does to you.

Worked example: making a paper result honest

All numbers are hypothetical. Over three months you made 60 paper trades of 100 shares each in a $10,000 simulated account. The simulator shows a profit of $900. Now adjust it for what the real market would have done.

More than half of the paper profit came from conditions the real market would not have given you. And this still says nothing about how you would have behaved with real money on the line.

Rules for honest practice

1. Set the paper account to your real starting amount. If you will start with $2,000, practice with $2,000.
2. Use the position sizes you would really use. Follow Position sizing.
3. Write the plan before each trade: entry, stop, target, size and reason.
4. Log every trade, including the embarrassing ones, in a trading journal.
5. Assume worse fills. Count a buy at the ask and a sale at the bid. Only count a limit order as filled if the price traded through it, not just touched it.
6. Subtract costs every week: spread, fees, and margin interest if you would use margin.
7. Never reset. If the account is down 30%, that is the most useful data you have.
8. Trade only during hours you could really trade. If you are in class at 10 a.m., do not paper trade at 10 a.m.

What the research says about the next step

Practice matters because the record of real short-term traders is poor. A study of people who began day trading in Brazil's equity futures market between 2013 and 2015 found that among those who kept at it for more than 300 days, 97% lost money. Only about 1.1% earned more than the Brazilian minimum wage. The authors found no sign that traders got better with experience.

That does not prove no one can succeed. It does mean the default outcome for an untested beginner is losing money, and that good practice should be designed to find out cheaply whether you are an exception. See Investing vs trading and Day trading.

A staged plan from paper to real money

Stage 1: paper, honestly. Follow the rules above for at least 50 trades with one written set of rules. Compute the stats in Keeping a trading journal. Move on only if the honest, cost-adjusted expectancy is positive and you followed your rules on nearly every trade.

Stage 2: small real money. Trade the same rules with real money at a small fraction of your planned size, for example 1 share or $50 positions. The goal is to feel real gains and losses while keeping them cheap. Compare these results with your paper results. A big gap usually means paper fills were too generous or your behavior changed.

Stage 3: increase size slowly. Raise position size in steps, and only after each step shows results consistent with the last one. If you break your rules, or hit a drawdown larger than your plan allowed, drop back a stage. See Drawdowns and losing streaks.

Try it

Set up the site's paper portfolio with the amount you would really start with. Write one page of rules: which stocks, what setup, where the stop goes, how big each position is. Make your first five trades from stocks on your watchlist, log each one, and at the end of the week apply the worked example adjustments to your results. If you want to check your rules on past data first, run them through the backtester, then see Does technical analysis work? for how to read the results honestly.

Sources

• Chague, De-Losso and Giovannetti: Day trading for a living? (SSRN)
• Barber and Odean (2000), Trading is hazardous to your wealth, Journal of Finance
• FINRA: Order types