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Finshots Daily

Why SEBI wants to change stock closing price rules

Dec 12, 2024
A proposed change by SEBI aims to transform how stock closing prices are determined in India. The discussion focuses on moving from the current VWAP method to a Closing Auction Session model, enhancing price transparency. It also highlights the potential introduction of a Continuous Auction System, drawing insights from past regulatory experiences in other markets. The challenges investors may face during this transition are explored, inviting listener thoughts and feedback.
07:49

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Quick takeaways

  • SEBI's proposal to transition from VWAP to CAS aims to enhance the accuracy of closing prices for Indian stocks.
  • While CAS could improve price representation, its complexity and risks of market manipulation underscore significant implementation challenges.

Deep dives

Impact of SEBI's Proposal on Closing Prices

A new proposal by SEBI aims to change how closing prices for Indian stocks are determined, shifting from the volume-weighted average price (VWAP) to a Closing Auction Session (CAS). Currently, the VWAP considers price movements and trading volume in the last 30 minutes of trading, which can lead to inaccuracies, particularly affecting passive funds that rely on these closing prices. When significant trades occur at the end of the trading day, they can distort the closing price, resulting in tracking errors for funds that aim to replicate indices. By adopting CAS, where an auction mechanism determines closing prices based on actual buyer-seller agreement post-market close, these discrepancies could potentially be minimized, leading to a fairer and more representative closing price for stocks.

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