Both the S&P 500 and 纳斯达克 indices have been highly reactive to their 200-日均线 over the last few days, a key technical level for market direction.

The S&P 500 tested support near its 200-日MA为5，728.26 yesterday, with buyers stepping in just above that level to prevent a deeper decline.

Meanwhile, the 纳斯达克 showed greater volatility, trading both above and below its 200-MA日（18，384.62） on Monday and Tuesday. However, in today’s session, the index has remained 下面 this level, reinforcing 卖家控制.

The 200-日均线 remains a crucial dividing line between bullish and bearish sentiment for each of the indices. Holding above keeps buyers in play, while staying below suggests further downside risk.

In the video above, I break down 关键技术水平 and 潜在转变点 that could determine the next directional move for both the S&P and NASDAQ indices.