Battle of bourses: It’s Sensex vs Nifty Bank on Friday F&O expiry days

The National Stock Exchange (NSE) has made it harder for its only competitor, BSE, to challenge its monopoly-like dominance in the equity derivative market by delaying the expiry of futures and options contracts of Nifty Bank until Friday, instead of Thursday. Bengaluru-based options trader Rajesh Sriwastava highlighted that BSE Sensex would see liquidity decline, and more attention would flow towards Nifty Bank. Following the announcement, shares of BSE were trading over 2% lower. The shift in Nifty Bank expiry will boost NSE’s banking index’s standing and lead to more volume, ultimately limiting BSE’s opportunities in the equity derivative market.