How to track bulk and block deals (2026)
To learn how to track bulk and block deals, you follow the same-day disclosures the NSE and BSE publish. A bulk deal is any trade above 0.5% of a company's listed shares in the normal market; a block deal is a single trade of at least 25 crore rupees in a separate window. Both are reported to the exchange the same trading day, which makes them one of the most current large-trade signals in the public record.
Definition
Tracking bulk and block deals
means monitoring the same-day disclosures the NSE and BSE publish for large trades: bulk deals above 0.5% of a company's shares in the open market, and block deals of at least 25 crore rupees in a separate window. Each names the client, quantity, and price. Source: NSE, BSE, SEBI.
Where to find bulk and block deals
Both the NSE and BSE publish these on their own websites, on the same trading day. Bulk deals are flagged by brokers and posted after market hours. Block deals are recorded during two dedicated windows, a morning window from 8:45 to 9:00 AM and an afternoon window from 2:05 to 2:20 PM. If you want the mechanics behind the two, read bulk deals vs block deals.
Same day
When the NSE and BSE disclose bulk and block deals
Source: NSE, BSE
A workflow to track them daily
- Check after market close. Bulk deal data lands after hours, so an end-of-day pass captures the full day.
- Read the fields. A disclosure names the client, the stock, buy or sell, the quantity, and the average price.
- Note the date on every entry. These are single-day records, so the date is the anchor.
- Watch for repeats. The same client accumulating a name across several days is a pattern you can verify from the public record, unlike a one-off trade.
What the data can and cannot tell you
- The trade is a fact; the motive is not. A large sale can be portfolio rebalancing, a fund redemption, or a promoter raising cash. The disclosure does not say which.
- Thresholds and windows can change. SEBI has revised the block deal minimum and timings before, so confirm the current norm and read the date on the data.
- Cross-reference other filings. A bulk buyer who also appears in a company's shareholding pattern or across independent investors' holdings is more informative than a single day's trade in isolation.
That is how to track bulk and block deals: read the exchange disclosures daily, note the date, and treat each as one day's record. Flock surfaces the day's deals from the NSE and BSE, each stamped with its date and linked back to the exchange. What it means for you is your call to make.
Frequently asked questions
Where are bulk and block deals published?
The NSE and BSE publish bulk and block deals on their own websites on the same trading day. Bulk deals are reported by brokers after market hours; block deals are recorded during their dedicated windows. Source: NSE, BSE.
What details does a bulk deal disclosure show?
A bulk deal disclosure names the client behind the trade, the stock, whether it was a buy or sell, the quantity, and the average price. It is a same-day public record of a large trade. Source: NSE, BSE.
How often should I check for bulk and block deals?
Daily, since both are disclosed on the same trading day. Bulk deal data lands after market hours and block deals during their morning and afternoon windows, so a once-a-day check after close captures the day. Source: NSE, BSE.
Do bulk and block deals show why someone traded?
No. The disclosure records the trade, the client, the quantity, and the price, but not the reason. A large sale can be rebalancing, a redemption, or a promoter raising cash. The record shows the what, not the why. Source: SEBI.
Flock tracks these filings, sourced, dated, and linked back to the original. See what smart-money entities disclosed, without the guesswork about what it means.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.