Bulk Deal

A bulk deal is a transaction where a single client's total buying or selling in one stock crosses 0.5% of the company's listed equity shares within a trading day; exchanges disclose these deals — with the client's name, quantity and price — the same evening.

Bulk deals happen in the normal market during regular trading hours; what makes them special is only the mandatory disclosure. Because the counterparties are named, the daily bulk-deal list is one of the few windows into what large, identifiable investors — funds, promoters' vehicles, well-known individual investors — are actually doing.

Reading the list needs care. A famous investor appearing as a buyer can spark follow-on buying, but many bulk deals are mechanical: fund rebalancing, inter-scheme transfers between a fund house's own schemes, or one leg of a pre-arranged transaction. The price at which the deal happened, relative to the market price, often hints at how motivated the buyer or seller was.

Bulk deals differ from block deals: a bulk deal is defined by size crossing the 0.5% threshold in the normal market, while a block deal is a separate, pre-negotiated trade executed in a dedicated exchange window.

How stocks tend to react

Stocks often move when a respected investor's name appears on the buy side of a bulk deal, and can fall when a large holder is seen exiting. The signal is stronger in smaller companies, where a 0.5% stake change is harder to absorb.

MarketPing measures this instead of guessing: every analysed announcement carries the stock's actual price reaction across 14 horizons, and the Reaction Lab aggregates how each category of announcement has historically moved stocks.

Related terms

Educational content, not investment advice. Regulations and tax rules change — verify current rules before acting.