Facts that change
Core about 5 min
| Fact | Value | As of | Source |
|---|---|---|---|
| Nifty lot size | 65 | 5 Nov 2026 bhavcopy | https://nsearchives.nseindia.com/content/fo/BhavCopy_NSE_FO_0_0_0_20261105_F_0000.csv.zip |
| Bank Nifty lot size; weeklies | 30; no weekly expiry | 5 Nov 2026 | same bhavcopy |
| Nifty weekly expiry day | Tuesday (previous trading day if holiday) | since 1 Sep 2025 | NSE circular NSE/FAOP/68589: https://nsearchives.nseindia.com/content/circulars/FAOP68589.pdf |
| Extra ELM on short index options, expiry day | 2% | since 20 Nov 2024 | SEBI circular SEBI/HO/MRD/TPD-1/P/CIR/2024/132, https://www.sebi.gov.in/legal/circulars/oct-2024/measures-to-strengthen-equity-index-derivatives-framework-for-increased-investor-protection-and-market-stability_87208.html |
| Upfront premium from option buyers | required | since 1 Feb 2025 | same |
| Calendar-spread margin benefit on expiry day | removed | since 1 Feb 2025 | same |
| Minimum index-derivative contract value | ₹15 lakh (₹15–20 lakh band) | since 20 Nov 2024 | same |
| STT, options sale | 0.15% of premium | since 1 Apr 2026 | https://nsearchives.nseindia.com/content/circulars/FATAX73524.pdf |
| STT, options exercise | 0.15% of intrinsic value | since 1 Apr 2026 | same |
| NSE transaction charge, options | 0.03553% of premium | since 1 Mar 2026 | https://nsearchives.nseindia.com/content/circulars/FA73061.pdf |
| Expiry settlement of index derivatives | Index value from the constituents' VWAPs over the last 30 min of continuous trading | from 7 Dec 2026 | SEBI circular of 15 Oct 2026, para 4.9: https://www.sebi.gov.in/legal/circulars/oct-2026/review-of-certain-aspects-of-the-closing-auction-session-market-timings-and-settlement-methodology-for-derivatives-contracts_105293.html |
| Intraday index-option limits | net ₹5,000 cr, gross ₹10,000 cr FutEq per entity (gross equal to the end-of-day limit), monitored by at least four random snapshots a day | from 1 Oct 2025 | SEBI circular SEBI/HO/MRD/TPD/CIR/P/2025/122 (1 Sep 2025), paras 4.1–4.3 and 6; NSE circular https://nsearchives.nseindia.com/content/circulars/SURV70553.pdf |
| India VIX methodology | CBOE-style, near and next month Nifty options, 30 calendar days | check current NSE document | https://www.nseindia.com/products-services/indices-india-vix |
| SEBI FY26 F&O study | 87.7% lost; options ~92% of losses; 59% of index-option turnover 0DTE | released 20 Aug 2026 | https://www.sebi.gov.in/sebi_data/attachdocs/aug-2026/1787233506209.pdf (figures via summaries; M01 · 1.11 Case 1) |
| Jane Street v SEBI | interim order 3 Jul 2025; SAT order on disclosure plea reserved 21 Oct 2026; no final SEBI order reported (timeline and conflicts: M08 · 8.12 Case B) | 6 Nov 2026 | https://www.sebi.gov.in/enforcement/orders/jul-2025/interim-order-in-the-matter-of-index-manipulation-by-jane-street-group_95040.html |
| Weekly-expiry abolition | no SEBI circular abolishing weekly expiries; one weekly benchmark index option per exchange allowed | 6 Nov 2026 | SEBI circulars list (searched 6 Nov 2026); SEBI circular of 26 May 2025, para 3.2 |