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For official Indian exchange records, use the NSE Bulk Deals/Block Deals/Short Selling Archives or NSE’s daily reports, and use BSE’s route Home → Markets → Equity → Historical Data → Bulk Deals / Block Deals. Check both exchanges when you need complete venue coverage. The exchange that published the trade is the authoritative place to verify it; a broker article or market-data aggregator is not a substitute for the underlying exchange file.

What these disclosures are—and why the distinction matters

Bulk and block deals are exchange-published disclosures of trades that meet particular reporting or execution conditions. They are not interchangeable labels, and the page where a trade appears depends on the exchange that published it. A company trading on both NSE and BSE can therefore have separate records on the two venues, even on the same date.

The practical implication is simple: first identify the venue, then identify the deal category, and only then search the date or symbol. Searching a single website or combining bulk and block files can produce an incomplete or misleading answer.

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Bulk-deal disclosure threshold

The rule reproduced in an NSE circular quoting Securities and Exchange Board of India (SEBI) requires disclosure when the total quantity bought or sold in a scrip is more than 0.5% of the company’s equity shares listed on that stock exchange. Brokers report the scrip, client name, quantity and traded price. The exchange disseminates the information to the public after market hours on the same day.

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The threshold is based on the aggregate quantity in the scrip under the disclosure rule, not simply on the rupee value of one order. It is not a statement that every large-looking order will appear as a bulk deal, nor is it the minimum value for a block-window transaction. When checking a row, compare its quantity with the company’s listed equity shares only if you are testing the disclosure criterion; do not replace the percentage test with a value estimate.

Block deals

Block deals are reported in a separate category. A block-window transaction follows the exchange’s block-session rules, while the resulting public record is found in the exchange’s block-deal report or archive. Keep the execution rules and the disclosure location separate: an order-size rule tells you how trading in the block window is conducted; it does not tell you where to download the public file.

Because the two categories are separate in the exchange interfaces, run two searches when the question is “all bulk and block activity.” A blank bulk-deal file does not prove that no block deal occurred, and a block-deal result does not automatically satisfy the bulk-deal threshold.

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NSE: the official places to look

Current and historical bulk/block records

Start with NSE’s Bulk Deals/ Block Deals/ Short Selling Archives. The page provides controls for the symbol and a date or date range, and it offers a CSV download. Select the deal category before searching so that a bulk-deal query does not get mistaken for a block-deal query.

For a focused investigation, enter the company’s NSE exchange symbol and the relevant trade date. Check the symbol spelling used by NSE rather than relying on a company’s full legal name. For a market-wide review, leave the symbol unrestricted where the page allows it and set the date range. A narrow date range is easier to audit; a longer range is useful for building a history of repeat disclosures.

Downloading the CSV is useful when you need to sort by client, quantity or price, compare several dates, or retain an auditable copy of the exchange output. Keep the original file unchanged and perform any filtering on a working copy. Record the selected category and date range because two files downloaded on different days can otherwise look identical.

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Daily report files

NSE’s All Reports page lists separate daily files labelled Bulk Deals (csv) and Block Deals (csv). These files are the practical choice when you are checking the latest trading session or processing several dates consistently. Confirm the report date shown by NSE rather than assuming that the newest file corresponds to the date on which you began your search.

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Use the daily files when you want a repeatable market-wide process: retrieve the bulk file, retrieve the block file, label each with its date, and then combine them only for your own analysis while preserving the original category. If a daily link is unavailable, the archive page remains the official historical lookup route.

Historical entry point

NSE’s Daily Market Reports – Capital Market page links to the same family of “Bulk Deals/ Block Deals/ Short Selling Archives.” If a bookmarked archive URL changes, this capital-market reports page is a useful official starting point. It also helps distinguish capital-market reports from unrelated NSE datasets.

Public archive versus member reporting

NSE circulars also describe Extranet reporting and correction workflows for exchange members. Those operational instructions are for brokers or other members submitting or correcting data; they are not an alternative investor-facing archive. For publicly viewable records, use the archive or daily report pages above. A member-facing submission screen should not be treated as evidence that a trade has already been disseminated publicly.

BSE: the official historical-data route

Menu path

BSE’s official FAQ gives this route for historical records:

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  1. Open the BSE website.
  2. Choose Markets.
  3. Choose Equity.
  4. Open Historical Data.
  5. Select Bulk Deals or Block Deals.

The route is documented in BSE’s FAQ: Block deal. BSE’s Equity Segment Master Circular dated 29 April 2025 also points readers to a Bulk Deal page and sets out the disclosure framework.

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Use the BSE menu when the trade was executed or reported there, even if the same issuer is more familiar as an NSE listing. The BSE route is a historical-data path, so select the relevant date and category instead of assuming that a current quote page contains the disclosure record.

If the BSE labels have moved

Exchange menus can be redesigned. If the wording differs from the FAQ, use BSE’s current Markets or site-search controls and look specifically for “Bulk Deals,” “Block Deals” and “Historical Data.” Verify that the page is on the official bseindia.com domain and that the selected date and category are visible before relying on the result.

Direct links or PDF documents may occasionally be unavailable from a particular network or may redirect. In that situation, return to the BSE home page and navigate through Markets rather than switching to an unofficial mirror. The objective is to confirm the current exchange-hosted page and its date controls.

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A reliable workflow for finding a trade

  1. Identify every relevant venue. Determine whether the company is listed or traded on NSE, BSE or both. An NSE report does not include a BSE-only record, and vice versa.
  2. Define the deal type. Decide whether you need bulk deals, block deals or both. Treat each category as a separate search and file.
  3. Set the trade date. Use the date of trading, not the date you discovered an article about the transaction. For a time series, search a defined date range and retain the range in your notes.
  4. Use the official report page. On NSE, open the archive’s symbol/date controls or the corresponding daily file on All Reports. On BSE, follow the Historical Data menu route.
  5. Download and preserve the output. Save the NSE CSV when available. Record the exchange, report type, trade date and download date alongside the file so that a later review can distinguish two similarly named reports.
  6. Read the disclosed fields. Check the scrip, client, quantity and traded price. Confirm that the row belongs to the selected category and date before drawing any conclusion.
  7. Cross-check the other exchange when coverage matters. A market-wide answer requires both NSE and BSE checks; one venue’s archive is not a combined national database.
  8. Separate fact from interpretation. Quote the row as a transaction record, then label any discussion of ownership, strategy or performance as analysis requiring additional evidence.

NSE and BSE compared

Question NSE BSE
Primary public route Bulk Deals/ Block Deals/ Short Selling Archives Home → Markets → Equity → Historical Data → Bulk Deals / Block Deals
Official daily files All Reports lists separate Bulk Deals (csv) and Block Deals (csv) Not stated in the cited material; use BSE Historical Data
Historical lookup Archive page with symbol and date controls Historical Data section with Bulk Deals and Block Deals choices
Download format CSV download on the archive; daily CSV links on All Reports Format not stated in the cited material
Coverage NSE-published records BSE-published records

The table is a map of where each exchange publishes its own records, not a ranking of data quality. Use the venue that published the trade and consult both for cross-exchange coverage. The absence of a stated BSE CSV format here does not mean BSE lacks downloadable data; it means the cited official material does not specify that format.

Block-window rules updated by NSE in December 2025

NSE’s circular dated 20 November 2025 changed the parameters for its block trading session, effective 8 December 2025. The changes affect execution in the block window, not the location of the public disclosure.

Parameter Previous value Updated value Qualification
Minimum order size ₹10 crore ₹25 crore NSE block-window rule effective 8 December 2025
Permitted price range ±1% Up to ±3% of the applicable reference price Subject to surveillance and applicable normal-market price bands

See the full NSE Block Trading Session Update dated 20 November 2025 for the operative wording. Do not use ₹25 crore as a bulk-deal disclosure threshold: the bulk-deal rule is expressed as more than 0.5% of listed equity shares, while the ₹25 crore figure governs the block window.

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These parameters can change through later exchange circulars. Use the date of the transaction and the circular applicable at that time when explaining an historical block trade. Execution parameters are context for understanding the category; they are not a replacement for checking the actual block-deal report.

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How to interpret a row in an official report

What the row establishes

A disclosed row can establish the exchange, report category, trade date, scrip, named client, quantity and traded price to the extent those fields are supplied in the file. It provides a transaction data point that can be checked against the exchange’s own date and category controls. The after-market dissemination timing described in the rule means the public record is associated with the trading day, even when a reader sees it later.

What it does not establish

The disclosure alone does not establish why the client traded, whether the position was bought for investment or another purpose, whether the client still holds the shares, or what the stock will do next. Those are interpretations beyond the fields described in the official disclosure rule. Avoid presenting a disclosed buyer as a guaranteed “smart money” signal or treating a sale as proof of a negative outlook.

Quantity and price need context

For bulk deals, compare the reported quantity with the company’s listed equity shares if you are checking the 0.5% criterion. For either category, retain the trade date and exchange because the same company can have separate records on different venues or dates. A client name and traded price are reported fields, not a complete description of the client’s total position or average cost.

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Common mistakes and fixes

  • Searching only one exchange: Repeat the search on the other venue when you need complete Indian-market coverage.
  • Mixing bulk and block reports: Select the category explicitly and keep separate downloaded files.
  • Confusing the block minimum with the bulk threshold: The NSE ₹25 crore minimum is a block-window execution parameter effective from 8 December 2025; it is not the 0.5% bulk-deal rule.
  • Using a commentary site as the record: Treat broker pages and aggregators as navigation aids at most. Verify the row on NSE or BSE’s own report.
  • Assuming an old bookmark is complete: Start from NSE All Reports or its capital-market reports page if an archive link changes, and use BSE’s current Markets navigation if labels have been updated.
  • Ignoring the report date: A file opened today may describe an earlier trading session. Record the date printed by the exchange.
  • Overlooking the symbol: Search with the exchange’s symbol and confirm the issuer before exporting a result.
  • Inferring intent: Limit factual statements to the disclosed fields; motive and future performance require evidence beyond the report.
  • Calling a venue-specific result national coverage: State clearly whether your answer covers NSE, BSE or both.

Official links at a glance

Frequently Asked Questions

Which exchange should I check for a bulk or block deal?

Check the exchange that published the trade. If the company trades on both NSE and BSE and you need complete coverage, search both official archives separately.

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Are bulk deals and block deals the same thing?

No. They are separate report categories. Bulk-deal disclosure uses the rule of more than 0.5% of listed equity shares, while block deals follow block-window execution rules. Search and save each category separately.

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What is the NSE bulk-deal threshold?

The rule reproduced in the NSE circular requires disclosure when the total quantity bought or sold in a scrip is more than 0.5% of the company’s equity shares listed on that exchange.

Where are the latest NSE files?

NSE’s All Reports page lists separate daily links for Bulk Deals (csv) and Block Deals (csv). The archive page also provides symbol and date controls plus a CSV download.

Where does BSE place historical bulk and block records?

BSE’s FAQ gives the route Home → Markets → Equity → Historical Data → Bulk Deals / Block Deals. Check BSE’s current menu if labels or links have changed.

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Does a disclosed buyer signal that the stock will rise?

No. The report supplies transaction details such as client, quantity and traded price, but it does not establish the client’s motive, current holding or future performance expectation.

The Bottom Line

Use the exchange’s own archive: NSE’s Bulk Deals/Block Deals/Short Selling Archives or daily CSV reports, and BSE’s Markets → Equity → Historical Data → Bulk Deals / Block Deals route. Search by the correct venue, category and trade date, preserve the official output, and keep the 0.5% bulk-disclosure rule separate from NSE’s ₹25 crore block-window minimum and ±3% price range effective 8 December 2025.

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