Market structure Block deal Bulk deal

Block deal vs bulk deal on Zerodha

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Block deals and bulk deals are large-volume trades on Indian exchanges. They differ in mechanism and disclosure:

Block deal

AspectBlock deal
DefinitionNegotiated trade between two counter-parties
WindowSpecific block deal session (08:45 to 09:00; 15:05 to 15:20 IST)
PriceWithin +/-1% of previous close
SizeMinimum Rs 10 crore or 50,000 shares (subject to revision)
DisclosureSame day end-of-day

Bulk deal

AspectBulk deal
DefinitionLarge trade in the open market exceeding 0.5% of listed shares of company
WindowAny time during regular session
PriceAt market price (normal matching)
SizeDetermined by share count vs listed share count
DisclosureSame day end-of-day

Key differences

  • Block deal: Pre-negotiated; specific session.
  • Bulk deal: Open-market; happens during regular session.
  • Both disclosed end-of-day per exchange rules.

Retail relevance

  • Block deal session is for institutional / HNI flow; retail rarely participates.
  • Bulk deal disclosure affects retail interpretation of large institutional moves.

See also

External references

References

  1. SEBI, Block deal framework, sebi.gov.in.
  2. NSE / BSE, Block / bulk deal operational guidelines, exchange websites.

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