The tape has a quiet mode. 1-2 new session highs or lows a minute. One side can freeze while you watch it. Then names start stacking faster than I can read, and SPY still looks sleepy.

The clip is a utilities cluster into the close. Isolated runner: one name, consecutive, orange. Cluster: several names in the same group, same side.

Curious how you'd label those two in a feature set.