Indices are not Assets so you cannot apply the same price action concept against any Price weighted or Capitalized weighted Indices.
When you apply an Indicator like Stochastics, , , or etc, to an Indice trading, you miss the formulation principle of the Indice and how the underlying stocks are behaving.
But Breadth tools on the other side helps us to understand the movement of the underlying stocks on which an Indice is formed.
TICK, TRIN and TICK or any capitalized weighted tools can beat these AGE OLD price action indicators easily.
Be a Wise trader.