BSE Gets Motilal Oswal's Downgrade, Says Shift In Expiry To Dent Market Share

The shift in the expiry of weekly contracts of Sensex from Tuesday to Thursday, will lead to a loss in market share for BSE in terms of premium turnover, which stood at 22.6% in May’25.

BSE has announced the shift in the expiry of weekly contracts of Sensex from Tuesday to Thursday starting 01 Sep’25.

(Source: Vijay Sartape / NDTV Profit)

BSE has announced the shift in the expiry of weekly contracts of Sensex from Tuesday to Thursday starting Sep, 01 2025. Motilal Oswal believes that this shift will lead to a loss in market share for BSE in terms of premium turnover, which stood at 22.6% in May’25. Currently, each of the days accounts for 18-22% share in the week’s total premium volume. BSE has a market share of 8% on Wed/Thu and 21%/24%/38% on Fri/Mon/Tue.

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Motilal Oswal Report

BSE Ltd., under the new regulations, has shifted the expiry of Sensex to Thursday from Tuesday. We note that after the implementation of new F&O regulations (effective March 2025), in weeks where markets were open on all five days, the share of each day was in the 18-22% range.

BSE had an average market share of 8% on Wednesday and Thursday (days influenced by Nifty’s expiry). On Friday/Monday/Tuesday, the premium turnover market share was 21%/24%/38%.

Assuming the recent trends and overlaying them on day-wise share in volumes for the industry, we believe that BSE’s market share can be in the range of 18-19% (from 22.6% in May’25).

The impact of these measures will be visible from Sep-25 when the new contracts kick in.

Click on the attachment to read the full report:

Motilal Oswal BSE Company Update.pdf
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Also Read: BSE F&O Expiry Shift: The Exchange's Stock May Take A Hit—Here's Why

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