Up‐bar on a narrow spread, close middle or low, volume very high or low. Weakness always appears on an up‐bar because professional selling has to sell into a surge of buying. The narrow spread indicates supply. Something has capped the top end of the market. Selling, or lack of demand from professional money are the only two things that can do this. If the volume is high plus this will show supply. If the volume is low this will show lack of demand. Check for old resistance levels to the left.