BSE Shares Jump 17% After SEBI Caps Derivatives Expiry Days
Why in the news
BSE’s stock surged after SEBI restricted expiry days for index derivatives, a move seen as helping BSE against NSE.
Key facts
- SEBI allows index derivatives expiries on only Tuesday or Thursday.
- NSE postponed moving its expiry to Monday, planned from 4 April.
- BSE’s share rose 17% to ₹5,438, its best single-day gain in six months.
- Analysts had earlier cut BSE earnings estimates because of NSE’s planned shift; the rule change reversed that mood.
BSE’s growing share
| Indicator | Change |
|---|---|
| Market share (two months) | 13% to 19% |
| Options premium volume | Up 30% QoQ |
| Broker and HFT preference | Shifting towards BSE |
Impact of the SEBI decision
- BSE and NSE must each pick Tuesday or Thursday, so expiry days cannot be changed repeatedly in a year.
- Aim: lower concentration risk and systemic stress from heavy expiry-day volumes.
- NCDEX and MSE, planning weekly index options, were advised to diversify beyond derivatives.
Eased intraday monitoring
- New rules due from 1 April met industry pushback.
- SEBI’s Friday circular said limit breaches will not draw penalties for now.
- Exchanges will take at least four random position snapshots daily.
- SEBI may move to delta-based or futures-equivalent limits, which could make current preparation obsolete.
Exam angle
- Allowed expiry days: Tuesday or Thursday.
- Minimum snapshots per day: four.