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Market Structure
Updated 2025-06-04·Editorial policy·Trading system

What is SEBI?

Securities and Exchange Board of India regulates brokers, exchanges, and market participants.

Indian market context (NSE)

Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how SEBI shows up on Indian index, equity, and futures books — update to live quotes in your journal.

Nifty 50 perspective

SEBI position limits cap Nifty index F&O open interest by client category — breaching limits forces square-off; relevant if you scale beyond retail norms.

Bank Nifty futures perspective

Bank Nifty F&O margin and exposure limits are SEBI-regulated via exchanges; spike in span margin at 55,000 reduces effective leverage.

How to validate

  • Validate SEBI readings by session tag — open hour stats differ from midday.
  • Check behaviour on gap-up/gap-down days separately on Nifty tags.
  • Correlate with India VIX buckets (calm vs elevated) before changing rules.
  • Confirm liquidity notes were filled on fast-market days.

How to track in TradeLyser

  • Tag session phase and liquidity state on each trade influenced by SEBI.
  • Daily journal: one line on market structure context (gap, range, trend).
  • Filter analytics by session tag during monthly review.
  • Note India VIX at session open when structure rules depend on volatility.

Best practices

  • Pre-define how SEBI maps to session tags each quarter.
  • Reduce size on expiry and event sessions when structure breaks.
  • Journal gap days explicitly — averages hide gap risk.
  • Align structure tags with India cash session hours (9:15–15:30).

Common pitfalls

  • Applying midday rules to the opening 15 minutes without adjustment.
  • Trading illiquid names with the same SEBI assumptions as Nifty.
  • Forgetting overnight gap risk on “intraday” tags.
  • Over-tagging — so many structure labels that review becomes noise.

How to use this in TradeLyser

Link major SEBI circulars in notebook when they affect your product (F&O, margin).

Related terms

FAQ

SEBI and prop trading rules?

Stay current if using eval accounts abroad.

SEBI impacts position limits?

Sector/index caps affect size — check before large positions.

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