Since the current bull run began on 03/23/20 to 09/02/20 the RUT has been weaker than the SPX. The decline from 09/02/20 to 09/11/20 - SPX fell 7.57% RUT fell 6.78 If the decline from 09/02/20 was the start of a larger bear move you would expect the weaker Index - RUT to lead the way down. That RUT is now relatively stronger than the SPX, is a clue the 09/02/20 to 09/11/20 drop is probably a completed correction.
Also note how today 09/14/20 the RUT outperformed the SPX for most of the day.
Typically late stage stock bull markets have a surge in small cap stocks. We could be witnessing the beginning of the small cap surge.