I consider that move up a corrective bounce in wave X up:
You can compare two charts above and see how closely RTY has been following the corrective fractal.
Let’s zoom in to see details of the decline off the high made in August:
So far RTY-mini has retraced 30% of the decline off the mid August high.
Bulls can push RTY higher to tag 41.4% retracement or even 50 % retracement fibs (see red arrows on the chart above).
Upon completion of that (a) up, (b) down, (c) up structure a new leg down should start.