What Should I Look for When Choosing a Stock to Day Trade?

Ask ten day traders what they look for in a stock and you will get ten lists. Ask them which of their trades made money last month and the lists shrink to the same five things. A stock that can be day traded profitably is not a stock you like, or a company you believe in. It is a stock that is doing something today that it does not normally do, in a way that gives you a clean entry and a clear exit.

This checklist is the one we use to build the live scanner. Run any candidate through it before you press buy.

1. Relative volume — is anyone actually here?

The first filter is not price and not the chart. It is relative volume (RVOL): today's volume compared with the stock's own average over the same window on a normal day.

A stock trading at 1.0× its usual volume is a normal day. A stock at 3× is being noticed. A stock at 10× or more has a crowd in it, and crowds are what create the sustained moves a day trader needs. Without unusual participation, a stock that looks like it is breaking out will drift back into its range the moment the handful of buyers who started the move are done.

Relative volume matters more than raw volume. Ten million shares in a stock that normally trades two hundred million is a quiet day. Two million shares in a stock that normally trades one hundred thousand is an event. We wrote a full explainer on how the number is calculated and how to read it: Relative volume (RVOL) explained.

Rule of thumb: below 2× RVOL, skip it unless there is a very specific setup. Above 5×, it earns a place on your watchlist regardless of anything else.

2. A catalyst — why is it moving?

Volume tells you that people are here. The catalyst tells you why, and the why decides how long they stay.

Strong catalysts that tend to produce full-day moves:

• Earnings beats or misses with a change in guidance
• FDA decisions, trial results, contract wins or losses
• Mergers, buyouts and takeover rumours from credible sources
• Analyst upgrades or downgrades from a bank the market listens to
• Sector-wide news that drags every name in a group

Weak catalysts that usually produce a spike and a fade:

• A vague press release with no numbers
• A social-media post from a promoter
• Sympathy moves in a stock with no news of its own

You do not need to be an analyst. You need to spend thirty seconds finding out whether the reason for the move is real, and whether it is the kind of reason that keeps traders interested past 10:00 AM. The news tape exists for exactly this; scan the headline for the ticker and decide.

3. A clean range — can you define your risk?

A stock can have volume and a catalyst and still be untradeable, because it is moving in a way that does not let you put a stop anywhere sensible.

What you want to see on the intraday chart:

• Higher lows after the initial move, not a series of full retracements
• Obvious levels — the pre-market high, the opening range, yesterday's close — that price is respecting
• A spread that is small relative to the range you are trading for. If the bid-ask spread is 2% and you are hoping for a 4% move, you are giving away half your edge before you start.

What you want to avoid:

• Candles with long wicks in both directions, which means nobody agrees on value and your stop will be hit by noise
• A stock that gapped up 40% and has done nothing but chop since 4:00 AM
• Halts. If a stock has been halted twice already this morning, the risk of being stuck in a halt with size is real.

If you cannot say out loud "I am buying here, I am wrong below there, and I am looking for this level" in one sentence, the setup is not clean enough.

4. Liquidity — can you get out?

Getting in is never the problem. The question is whether you can get out with your full size at the price you see on the screen, in the moment you decide to leave.

A useful minimum is a stock that is trading at least a few hundred thousand shares per hour during the session, and whose level-2 shows real size on both sides rather than a single bid a long way below the last print. If your intended position is more than a small fraction of what trades in a typical minute, you are the liquidity, and you will pay for that on the way out.

Liquidity also changes through the day. A stock that was easy to trade at 9:45 can be a ghost town at 1:30. Plan your exit for the market you will have then, not the one you have now.

5. The right price band — does the math work?

Every trader has a price range where the numbers work for their account size and their tolerance for spread and volatility.

• Under $1: moves are large in percentage terms but the spread and the tick size eat you alive, and halts are common. Only for the very experienced.
• $1 to $10: the classic day-trading band. Enough volatility to make a move worth trading, enough liquidity in the good names to get out. Most of the runners you will see on a scanner live here.
• $10 to $50: smoother, better spreads, moves are smaller in percentage but larger in dollars. Suits traders with bigger accounts and a preference for cleaner charts.
• Over $50: usually the domain of swing traders and institutions. Day-tradeable on big news, but the percentage moves are rarely worth the capital tied up.

Pick a band that matches your account, then stop looking at everything outside it. Half the value of a scanner is what it hides from you.

Putting the five together

A stock earns a trade when it passes all five. Not three, not four. The most common losing pattern we see is a trader who finds a stock with enormous relative volume and a great story, ignores that the chart is a mess and the spread is wide, and gets chopped up for an hour.

Here is how it looks in practice at 9:15 AM:

1. Open the scanner sorted by volume. Ignore anything under 2× RVOL.
2. For each of the top ten, find the headline. Cross off anything with no real catalyst.
3. Pull up the chart for what is left. Cross off anything without a level you can trade against.
4. Check the spread and the level-2. Cross off anything you could not exit in one click.
5. Cross off anything outside your price band.

Most mornings that leaves two or three names. Those are the ones worth your attention for the first hour. Everything else is noise, however exciting it looks.

What not to look for

A few things that feel like signals but are not:

• "I know this company." Familiarity is not a catalyst. Your favourite stock going up 1% on no news is not a day trade.
• The biggest percentage gainer. The top of the gainers list is often a sub-$1 stock with no float and a 5% spread. Sort by relative volume, not by percent change.
• A chart pattern on its own. A flag or a wedge with no volume behind it is a shape, not a setup.
• Someone else's alert. By the time an alert reaches a chat room, the people who sent it are looking for the exit.

Stock selection is a filter, not a search. The job is not to find a reason to trade. It is to find a reason not to, quickly, on everything that does not qualify, so that the two or three names that do get all of your attention.

Educational content only, not investment advice. Every trade involves risk.