What is pre-market trading, and what are the premarket hours?

Pre-market trading is the part of extended-hours trading that happens before the 9:30 a.m. ET opening bell. Buy and sell orders meet on electronic venues, not on a trading floor. Nasdaq runs its pre-market session from 4:00 to 9:30 a.m. ET, and NYSE Arca runs its early session over the same hours. Other venues start later: NYSE American and NYSE National open their early sessions at 7:00 a.m. ET.

Your broker decides which part of that window you can use. Some open at 4:00 a.m. ET, many later, and the order types they accept can differ from the regular session. The regular session itself starts with an opening auction at 9:30 a.m. ET; the US stock market hours page has the full schedule, the holidays and a live clock.

  • Pre-market: 4:00 to 9:30 a.m. ET on Nasdaq and NYSE Arca (check your broker's window).
  • Regular session: 9:30 a.m. to 4:00 p.m. ET.
  • After-hours: 4:00 to 8:00 p.m. ET.
  • Major US data such as the jobs report and CPI: 8:30 a.m. ET, in the middle of the pre-market.

Turn your phone sideways to read the drawing. Tap to close.

A hand-drawn 24-hour timeline in New York time: the pre-market from 4:00, the regular session from 9:30 to 16:00, and after-hours until 20:00.

Why the pre-market matters: earnings, news and gaps

News does not wait for 9:30. Companies often release earnings and other news outside regular hours, and major US data such as the monthly jobs report and CPI come out at 8:30 a.m. ET. The first reaction happens in the pre-market, so by the opening bell price can sit far from yesterday's close. That distance is the gap.

Hypothetical: a stock closes at $99.00. It reports earnings before the open, and the pre-market trades between $101.00 and $102.60, so it is up about 2% to 3.6% before the regular session starts. Watching the pre-market tells you which stocks are moving, on what news, and where the first levels of the day sit.

What happens next is decided after the open, not before it. In the drawing, the same kind of gap goes two ways: on the left it holds and keeps rising (gap and go); on the right it fades back to the prior close (gap fill). The gap trading strategy guide covers both setups.

Turn your phone sideways to read the drawing. Tap to close.

Two hand-drawn panels with a dashed prior close line: on the left, gap and go, where price opens above, holds and keeps rising; on the right, gap fill, where price opens above, then fades back down to the prior close, with the gap area shaded.

Pre-market risks: thin volume, wide spreads and prices that may not hold

The drawing at the top of this page shows the core problem: the pre-market volume bars are short and sparse next to the spike at the 9:30 open. Nasdaq notes that market makers take part in extended sessions voluntarily, so liquidity can be lower and prices worse.

The spread is the cost you feel first. In the drawing below, the liquid quote is $100.00 bid and $100.01 ask; the illiquid one is $24.80 bid and $25.20 ask. Hypothetical: buy 200 shares at market on the right-hand quote and sell them straight back, and you lose $0.40 a share, $80 in total, before price has moved. A stock quoted a penny wide at noon can look like the right-hand ladder at 7:00 a.m. ET. The bid-ask spread guide explains the mechanics.

FINRA requires brokers to give customers a risk disclosure before they allow extended-hours trading, and that disclosure covers six risks:

  • Lower liquidity: fewer buyers and sellers, so your order may fill only partly or not at all.
  • Higher volatility: prices can swing more than during the regular session.
  • Changing prices: a pre-market price may not match the price at the open.
  • Unlinked markets: the same stock can trade at different prices on different venues at the same time.
  • News: a headline in a thin market can have an exaggerated effect that does not last.
  • Wider spreads: the gap between the bid and the ask can be much wider than normal.

Turn your phone sideways to read the drawing. Tap to close.

Two hand-drawn quote ladders: on the left, liquid, with a bid of 100.00, an ask of 100.01 and a spread of 0.01; on the right, illiquid, with a bid of 24.80, an ask of 25.20 and a spread of 0.40. Arrows note that a market buy pays the ask and a market sell gets the bid.

How to place a pre-market order: limit orders and time in force

The SEC notes that many brokers accept only limit orders in extended hours, to protect investors from unexpectedly bad prices. A limit order fills only at your price or better. It shields you from a thin quote, but it can leave you with a partial fill, or none, if price moves away.

Your broker may also ask you to mark the order as eligible for extended hours through its time-in-force setting. Ask whether an unfilled pre-market order is canceled or carried into the regular session, because a forgotten order can fill later at a price you no longer want.

Hypothetical: the stock above is quoted $102.40 bid and $102.70 ask at 8:00 a.m. ET. A limit buy at $102.50 for 100 shares fills only if someone sells at $102.50 or lower. Maybe 40 shares fill and the rest never do. A limit order controls the price, not the fill, and a limit set far above the ask to chase the move defeats its purpose. The order types guide covers limit, stop and market orders.

How to use the pre-market high, low and prior close after the open

Many day traders do not trade the pre-market at all. They use it to mark levels, then trade the regular session, when volume is higher and spreads are tighter. Three prices matter most: the pre-market high (PM high), the pre-market low (PM low) and the prior close, yesterday's last regular-session price. Many traders watch them, so price can react there.

The drawing shows the classic long. Hypothetical, continuing the stock above: prior close $99.00, PM low $101.00, PM high $102.60. After the open, the first candles stall just under the PM high and dip to $101.60. Then a 5-minute candle closes at $103.00, above the PM high. The PM high is the location, and the close above it is the confirmation. Buy at $103.00 with a stop at $101.55, just under the post-open dip: a risk of $1.45 a share. A 2R target sits at $105.90, as long as no level blocks the way.

Size comes from the stop. A $20,000 account risking 0.5% accepts a $100 loss: $100 ÷ $1.45 = 68.97, rounded down to 68 shares, about a $7,004 position. At the stop the loss is 68 × $1.45 = $98.60, or −1R, plus costs; at the target the gain is 68 × $2.90 = $197.20, or +2R. The position size calculator does this math for you.

The same levels work in reverse. A 5-minute close below the PM low points to weakness, and the prior close becomes the gap-fill target. A stock that opens between the PM high and the PM low and churns there has not chosen a side, so many traders let the opening range breakout settle it.

Turn your phone sideways to read the drawing. Tap to close.

A hand-drawn chart: candles start in the pre-market, left of a dashed 9:30 line, then continue in the regular session; a dotted prior close line sits below, and dashed PM high and PM low lines extend to the right. After the open, a candle closes above the PM high with a buy triangle, and a dotted stop line sits below that candle.

When the pre-market move does not hold: failure cases

Pre-market moves fail often, and the failures look like the setups at first. Three are common, shown here on the same hypothetical stock:

  • The open erases the move. You buy at $102.60 at 8:45 a.m. ET after only a few thousand shares have traded. The opening auction prices the stock at $100.80, and you are down $1.80 a share before the regular session has started. A pre-market price is a thin preview, not the official open.
  • The breakout snaps back. A 5-minute candle closes at $102.80, just above the PM high, and you buy. The next candle closes at $102.20, back below it, and price slides toward the PM low. The stop at $101.55 caps the loss at 1R, $1.25 a share sized to your fixed risk, plus slippage.
  • The gap fills. Price breaks the PM low and keeps falling toward the $99.00 prior close, as in the right panel of the gap drawing. A long held "because the news is good" turns a planned −1R into a much larger loss.

How to see pre-market data on TradingView

TradingView shows pre-market and after-hours bars only when you switch them on, and only on intraday intervals such as 1, 5 or 15 minutes.

The last step in the list below matters because the session changes your numbers. With extended hours on, session-based tools such as VWAP can start their day in the pre-market, and moving averages pick up the thin early bars. If you trade the regular session, chart the regular session; the best TradingView settings guide explains why.

Once the regular session is underway, UpTickFlow, our invite-only TradingView indicator, can serve as a second check on a plan built from these levels. It is not a scanner: it waits for a closed candle at a level, draws the entry, stop and target before the trade, scores the setup from 0 to 100 and stays quiet in chop and in the first minutes after the open. See how it works.

  1. Open the stock on an intraday chart.
  2. Right-click the chart, choose Settings, open the Symbol tab and, under Session, select Extended trading hours. The session control at the bottom right of the chart does the same in one click.
  3. Draw horizontal lines at the PM high, the PM low and the prior close, and write the prices down.
  4. Switch back to Regular trading hours if that is the session you trade.

A pre-market routine before the bell

A short routine keeps the pre-market useful instead of tempting. Do it before 9:30 a.m. ET, while you are still flat. If any step fails, there is no trade.

  1. Check the calendar: earnings for your stocks and any 8:30 a.m. ET data.
  2. Find the catalyst. A big move on thin volume with no news is a warning, not an invitation.
  3. Mark the levels: prior close, PM high, PM low, and yesterday's high and low, with prices.
  4. Check volume and the spread. If the quote is wide now, ask whether the stock will be liquid enough for your stop after the open; relative volume helps.
  5. Write the plan: which close over which level triggers the trade, where the stop goes, the target, and the size at your fixed risk, such as 0.5% to 1% of the account.
  6. If you trade before the open anyway: limit orders only, a smaller size, and no forgotten order left working.