When do the main US markets operate? Complete guide to hours

If you are an investor and need to coordinate your operations with the North American markets, it is essential to understand the US premarket hours and regular trading periods. Below, we present a detailed breakdown of the three main trading centers.

Operating Hours in Eastern Time (ET)

General Trading Session Schedule

All markets maintain uniform hours from Monday to Friday:

On Saturdays and Sundays, all markets are closed.

NYSE: The Most Influential Market in the World

The New York Stock Exchange represents the largest securities trading center globally. Its operations begin with the premarket session at 4:00 am, and the official opening occurs at 9:30 am local time, remaining active until 4:00 pm. After the regular close, there is an extended trading window from 4:00 pm to 8:00 pm.

This market hosts the most prestigious corporations worldwide and is considered the epicenter of global institutional investment decisions.

Nasdaq: Specializing in Technology

Nasdaq operates on the same hours as the NYSE. The premarket hours in this market start at 4:00 am and end at 9:30 am. The regular session runs from 9:30 am to 4:00 pm, followed by the after-market from 4:00 pm to 8:00 pm.

Unlike the NYSE, Nasdaq is characterized by concentrating high-growth technology and biotech companies. Its most representative index, the Nasdaq 100, groups the hundred largest companies in the market.

NYSE American: Opportunities in Small Capitalizations

NYSE American (AMEX) has slightly different premarket hours. The pre-trading begins at 7:00 am (one hour later than its competitors) and extends until 9:30 am. The regular hours are from 9:30 am to 4:00 pm, with an extended session from 4:00 pm to 8:00 pm.

This market is ideal for investors interested in small and mid-cap companies with potential for accelerated revaluation, although they carry higher volatility.

2025 Holiday Calendar

The three markets close on the following dates:

Note: Nasdaq does not observe Juneteenth (June 19), unlike NYSE and NYSE American.

Time Conversion for Major Spanish-Speaking Cities

( Hours for NYSE and Nasdaq

) Hours for NYSE American

The hours for NYSE American coincide with those of NYSE and Nasdaq in these locations, facilitating operational coordination for investors across the entire Spanish-speaking region.

Tips to Optimize Your Participation

Keep in mind that US premarket hours have lower liquidity than the regular session, which can result in wider bid-ask spreads. The regular session ###9:30 am - 4:00 pm ET### concentrates the highest trading volume and offers the most favorable conditions for order execution.

Plan your operations considering not only the opening and closing times but also your local time zone to execute trading strategies effectively.