India’s securities regulator plans to boost its surveillance systems to better detect complex trading strategies after taking action against high-speed trading giant Jane Street Group for alleged market manipulation.

Sebi imposed a temporary trading ban on the US-based firm and ordered the seizure of Rs 4,840 crore, citing 'an intentional, well-planned and sinister scheme'

India has temporarily barred Jane Street Group LLC from accessing the local securities market for alleged index manipulation, dealing a severe hit to the US firm that made $4.3 billion in trading gains there in more than two years.