Wave 4 (for the wave from Mar'20 low) was started from 16th feb and a flat correction (Wave A/W) was completed on 26th feb. As now wave B/X is in progress, it might be in range-bound between 14700 and 15400 levels.
Disclaimer: This is just my personal view. You are advised to rely on your own analysis while taking trading decisions.
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Wave count from Mar'20 low
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Today's fall is zigzag and it is wave (y). Pullback from day low looks like wxy, so there will be another fall wave (z).