How traders allegedly gamed CAS
Aug 21, 2026 · 9m
Summary
Host Shashank signs off after two years, introducing Saad as the new anchor for Finshots Daily. The episode examines alleged Sensex manipulation by Koptal and Mancy during the new Closing Auction Session (CAS). It explains how traders exploited CAS loopholes to influence index prices for option profits. The discussion evaluates potential regulatory fixes, such as restricting order cancellations, while weighing impacts on market participation and price discovery.
Topics discussed
Host transition: Shashank steps down, Saad takes over
Intro: CAS downsides and insurance masterclass promo
SEBI action against Koptal and Mancy for manipulation
How the Closing Auction Session (CAS) works
Koptal's aggressive buying to spike Sensex
Mancy's sell orders to suppress Sensex price
Why CAS is vulnerable to spoof and pull tactics
Global safeguards: NYSE, Thailand, and Hong Kong
India's current rules and the limit order dilemma
Participation drop and potential regulatory solutions
Listen ad-free on Castria