23 July 2026
5 Minutes Read

Block Deal vs Bulk Deal: Everything You Need to Know

bulk deal occurs when a single client buys or sells shares amounting to 0.5% or more of the total equity shares of a listed company during a trading day. Bulk deals are executed through the normal trading window of the stock exchange and are subject to the applicable disclosure requirements prescribed by the exchanges. 

block deal is a trade involving a minimum quantity or value prescribed by the stock exchange, executed between two parties through a dedicated block deal trading window in accordance with the applicable exchange framework. The trade is negotiated between the parties before execution and must be carried out within the price range permitted by the exchange. Block deals are reported by the exchange in accordance with the applicable disclosure requirements. 

Timing is one of the key differences. Bulk deals can be executed during the normal trading hours of the stock exchange. Block deals, however, are executed only during the dedicated block deal trading windows prescribed by the stock exchange, in accordance with the applicable exchange framework. 

Eligibility is another important difference. A bulk deal occurs when a single client buys or sells shares amounting to 0.5% or more of the total equity shares of a listed company during a trading day. A block deal must satisfy the minimum quantity or value criteria prescribed by the stock exchange for execution through the block deal window. 

Execution also differs. Bulk deals are executed through the regular trading window of the stock exchange, while block deals are negotiated between the parties before execution and carried out through a dedicated block deal trading window within the price range permitted by the exchange. 

Disclosure is another distinction. Both bulk deals and block deals are disclosed by the stock exchanges in accordance with the applicable disclosure requirements. The timing and manner of disclosure are governed by the relevant exchange regulations. 

Feature Bulk DealBlock Deal
Where it is executed Placed and executed in the regular market session Through a dedicated block deal trading window prescribed by the stock exchange 
Timing During the normal trading hours of the stock exchange During the dedicated block deal trading windows prescribed by the stock exchange 
Eligibility Buy or sell transactions amounting to 0.5% or more of the total equity shares of a listed company during a trading day Must meet the eligibility criteria specified by the stock exchange. 
Execution Executed through the regular market Negotiated between the parties before execution and carried out through the dedicated block deal window 
Disclosure Disclosed by the stock exchange in accordance with the applicable disclosure requirements Disclosed by the stock exchange in accordance with the applicable disclosure requirements 
Typical participants Institutional investors, mutual funds, foreign portfolio investors (FPIs), high net-worth individuals (HNIs), and other eligible market participants Institutional investors, mutual funds, foreign portfolio investors (FPIs), high net-worth individuals (HNIs), and other eligible market participants 

Bulk deals and block deals can provide insight into significant market transactions involving listed companies. Since these trades involve relatively large quantities of shares, they are often monitored by market participants as part of their overall market analysis. 

However, a bulk deal or block deal should not be interpreted as an indicator to buy or sell a security. Such transactions may take place for a variety of reasons, including portfolio rebalancing, changes in investment strategy, regulatory requirements, or other investment objectives. Investors should evaluate multiple factors, including a company’s fundamentals, financial performance, risk profile, and their own investment objectives, before making any investment decisions.

Both NSE and BSE publish daily bulk deal and block deal reports on their official websites in accordance with the applicable disclosure requirements. These reports generally include details such as the security name, client or participant name (where applicable), quantity, and trade price. Investors may also use their broker’s platform, including the Navia All-in-One App, to monitor market data and track securities following such disclosures. 

Block deals and bulk deals both involve significant share transactions, but they differ in how they are executed and the eligibility criteria that apply to them. Bulk deals are executed through the normal trading window once they meet the prescribed threshold, while block deals are negotiated between parties and executed through a dedicated block deal trading window in accordance with the applicable exchange framework. Understanding these differences can help you better interpret market disclosures and large market transactions with greater context. 

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Frequently Asked Questions 

What is the main difference between a block deal and a bulk deal?

What is the minimum size for a block deal in India? 

What is the minimum size for a bulk deal? 

Can retail investors participate in block deals? 

Can retail investors participate in block deals? 

Do block deals affect a stock’s live market price? 

Where can I check bulk and block deal data? 

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