What are the standard trading hours for the US stock market?

The standard trading hours for the US stock market are typically from 9:30 am to 4:00 pm Eastern Time (ET), Monday through Friday. Here are the details:

1. **Pre-Market Session**: The pre-market session allows orders to be entered and queued from 6:30 am to 9:30 am ET. During this time, markets are not yet open, and traders can place orders ahead of the official opening.
2. **Core Trading Session**: The core trading session is from 9:30 am to 4:00 pm ET. This is the primary trading period when markets are open, and orders can be executed based on market prices.
3. **Late Trading Session**: Some exchanges, such as Nasdaq, offer a late trading session from 4:00 pm to 8:00 pm ET. During this time, traders can continue to buy and sell stocks, but the prices may be less liquid and more volatile.
4. **Options Trading**: Options trading has its own unique schedule. Equity options trade from 9:30 am to 4:00 pm ET, while ETF options trade from 9:30 am to 4:15 pm ET. Index options, such as those for the S&P 500, have slightly different trading hours.
5. **Bond Market**: The bond market has its own trading hours, with early trading from 4:00 am to 8:00 am ET and the main trading session from 9:00 am to 4:00 pm ET.

It's important to note that these are the general trading hours, and some exchanges or brokerage firms may have different rules or extended trading hours. Additionally, the US stock market is closed on weekends and major holidays.