I personally find the morning session (9:30 AM–11:30 AM ET) tends to offer the best combination of volume, liquidity, and price movement for day trading. The market open brings in a lot of activity as traders and institutions react to overnight price action, economic news, pre-market levels, and the opening of the U.S. cash session. That increased participation can create some of the strongest and cleanest moves of the day. As we move into the afternoon, volume and volatility often begin to slow down, and price action can become more choppy or range-bound. Activity may then pick back up during Power Hour and heading into the market close as traders and institutions reposition before the end of the session. That's one of the reasons I personally prefer trading the morning session. I'd rather focus on a smaller window when the market is generally more active than feel like I need to sit in front of the charts all day waiting for another opportunity.