From a high of around 650, the price has pulled back and is currently fluctuating between 641 and 645. The price is closely hugging below the middle band of the Bollinger Bands at around 645. In the short term, the bears still have the advantage, but the downward momentum has significantly weakened.

The current strong resistance level is near the middle band at 645. The price is likely to encounter resistance and pull back when it rebounds to this level. The short-term key support level at the lower band is around 640, which closely coincides with the recent low of 641.69 and serves as a defensive line for the bulls. The upper band coincides with the previous high and marks the starting point of this round of decline, indicating heavy resistance above.
It is recommended to short near 645 with a target of 640 and a stop-loss at 650.