今天收盤前的下跌和昨天很不同

Yesterday，QQQ came back and penetrated the day low of 520 and closed below that, which was extremely bearish, and that lead to a big downturn at open today

Today, market tried to put a bottom at 509, and QQQ's retrace before the close still stayed above 0.618 level. 

If market can hold this level and establish some higher highs, we may get a short term rally in place --- I think market is waiting for NVDA earning to give a signal (up or down)