How bulk and block deals are tracked
NSE's daily bulk and block deal files, stored from 18 September 2026, with what each stock did afterwards.
NSE publishes two lists of large trades every trading evening: bulk deals, where one client trades more than 0.5% of a company's shares in a day, and block deals, single large trades done in a separate trading window. Each list names the client, whether it bought or sold, the quantity and the price.
What we store
NSE offers only the latest session's files, with no history to download, so Flash Finance stores each day's deals as they are published. The record starts on 18 September 2026, the day collection began. A session that is missed cannot be recovered later, which is why the files are collected twice each evening.
What the page shows
- Recent deals, the last 60 days, largest first, with the deal value in ₹ crore.
- Since the deal: the latest close compared with the deal price.
- Net buying over 30 days: for each stock, the value bought minus the value sold in bulk and block deals.
- Who the client is: NSE publishes only the client's name, so its type is a guess from the name. A name containing "Mutual Fund" or "Asset Management" reads as a mutual fund; known foreign banks and brokers, or "FPI", as a foreign investor; "Insurance" or "Pension" as insurance or pension; words such as "Fund", "Capital" or "Securities" as another institution; anything else as other. It is shown as a hint, not as a fact.
The performance tracker
For every stored deal worth at least ₹1 crore and at least 7 days old, the tracker measures the stock's return from the first close on or after the deal date to the first close at least 7, 30, 60, 90 and 180 calendar days later. The Nifty 50's return over the same window is shown beside it, so a market-wide move is not mistaken for the effect of the deal. Each cell is a median, and a group with fewer than 20 deals is not shown. Until enough deals have aged, the page says it is still collecting.
Limits
A deal shows who traded, not why: every share bought in a deal was sold by someone else. "Smart money" is a label for large, disclosed trades, not a claim that those traders are right. The tracker measures what followed past deals; it does not predict what will follow the next one.
