In the gold chart below the red arrow is pointing out a sell stop that was hit. Gold futures had already sold off about $8 fairly quickly when this occurred. This will often signal short term exhaustion in the direction of trend and commonly set the market up for range bound trading or reversal from that level.
The 10yr note was moving lower all morning when we finally saw this buy volume imbalance footprint. This is a common sign of aggressive buyers stepping in at opportune prices. We look for at least some sort of move higher when this occurs, especially after a sizable move lower that had momentum (as shown here).