Support - 17,538, 17,400, 17,327

Resistance - 17,770, 17,800, 17,980

The index could suffer another day end closing today below 17,538 (23.6% of Feb low - Apr high), which would open doors for a slide to daily 100-MA support around 17,344 levels.

A break below 23.6% Fibo usually translates into a drop to 38.2% Fibo as well.

On the higher side, a clear break above 18K is needed to signal bearish invalidation.
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