Bulk Block Deal Analyzer

This bulk block deal analyzer calculates quantity multiplied by deal price and compares that price with the current price you type. It does not retrieve exchange deals, identify an investor or verify unusual volume. Its buyer, sentiment and impact cards rely on assumptions, so use the arithmetic separately from those labels. Verify a reported transaction against the exchange disclosure before interpreting it.

Bulk and block describe different rules

As checked on 15 October 2026, the bulk criterion applies when purchases or sales under a single client or proprietary account exceed 0.5% of a company’s equity shares listed on the exchange. Count purchases and sales separately for that exchange and day; do not add unrelated clients or net purchases against sales. The threshold can be reached through multiple normal-market transactions. A large rupee amount alone cannot establish it.

SEBI/MRD/SE/Cir-7/2004, dated 14 January 2004 and reproduced in SEBI’s consolidated trading rules, is the cited basis for that bulk disclosure requirement. The rules specify broker disclosure of the security, client, quantity and traded price, with public dissemination by the exchange on the same day after market hours.

For the separate block window, SEBI/HO/MRD/POD-III/CIR/P/2025/134, dated 8 October 2025, sets the minimum order size at ₹25 crore. The circular makes its provisions applicable from the 60th day of issuance. Trades executed in that window must result in delivery and shall not be squared off or reversed.

NSE’s current market-segments page agrees with the ₹25 crore amount. Its older inter-institutional page still states ₹10 crore, which conflicts with the later circular. Use the later SEBI text and current exchange guidance rather than that older figure. For background, read bulk and block deals explained.

How to Check Bulk and Block Deals on NSE and BSE

This analyzer does not fetch deals, so the first step is to read the official list. Both exchanges publish bulk and block deal data on their websites, in the market data area for equities. Look for the pages named Bulk Deals and Block Deals, and use the archive to pick a past date. If the menu changes, search the exchange site for the page name.

1. Open the exchange's bulk deals or block deals page.
2. Pick the date or date range you want. Bulk deals are published the same day after market hours.
3. Find your company by symbol.
4. Note the client name, whether it was a buy or a sell, the quantity and the price.
5. Copy that row into your notes, with the date and the exchange, before you calculate anything.

Then type the quantity and deal price into the analyzer to get the deal value. Check the same stock on both exchanges, since a deal is reported by the exchange where it traded.

Reading a Deal: Buyer, Seller, Price and Size

Lists commonly show the date, symbol, security name, client name, buy or sell, quantity traded, price and sometimes remarks. Read them one column at a time:

• Client name: the entity on the exchange record. It can be a fund, an institution, a company or an individual. The name alone does not say why it traded.
• Buy or sell: one row shows one side. A buy row from one client usually has a sell on the other side from another.
• Quantity and price: multiply them for the deal value. A quantity is in shares, not rupees.
• Weighted average price: if a client traded in several lots the same day, the listed price may be an average. Made-up example: 1,00,000 shares at 100 and 1,00,000 shares at 104 give an average of (1,00,000 x 100 + 1,00,000 x 104) / 2,00,000 = 102.
• Size against the company: compare the quantity with total shares and with the free float. The same Rs 2 crore means little in a very large company and a lot in a small one.

To check a holder's overall position, look at the company's shareholding pattern filed with the exchange. A single row does not show it. Terms such as promoter holding and FII and DII are explained in our glossary.

What the form asks you to enter

The form has no trade date, client name, buy/sell side, listed-equity total or historical daily-volume field. It cannot determine the participant’s category, reconstruct net buying or test whether the entered quantity passes the bulk threshold. Selecting Block Deal does not prove the trade occurred in a block window.

Use one clearly identified disclosure row and record its date outside the form. If you combine several transactions, explain whether the quantity and price represent a single trade or an aggregate with a weighted price. Otherwise, the calculated value may not correspond to the item you intended to study.

Worked example: deal value and price comparison

Assume a fictional disclosure reports 2,00,000 shares at ₹100 each. Enter ₹125 as an illustrative later Current Market Price. Use a made-up symbol such as EXAMPLE; no real company, investor or trade is represented.

• Deal Value = 2,00,000 × ₹100 = ₹2,00,00,000, or ₹2 crore.
• Price vs Current = (₹100 − ₹125) / ₹125 × 100 = −20%.
• The negative comparison means the deal price is below your entered current comparison price. It does not identify a bearish investor.

That percentage uses the current price as its base. The different question, how much has price risen from the deal price, uses the deal price as the base for the percentage: (₹125 − ₹100) / ₹100 × 100 = 25%. Both calculations describe the same assumed prices, with different reference points.

For a separate bulk-threshold illustration, assume the company has 2,00,00,000 listed equity shares. Assume the fictional quantity is one client’s purchases on the same exchange and day. It represents 2,00,000 / 2,00,00,000 × 100 = 1%. That exceeds the stated bulk threshold, but the form has no field for the company’s total listed shares. The form cannot carry out that classification check itself.

Why Volume Multiple and Buyer Signal need caution

Market Sentiment is assigned from the deal-price/current-price difference. When the comparison price comes from a later time, this label confuses a price change since the trade with evidence about the participant’s motive. Even a same-time price comparison does not reveal the research or intention behind a transaction.

Short-term Impact and Actionable are similarly rule-based messages. The form does not observe later buying and selling activity or test a price forecast. Do not treat these labels as instructions to follow a buyer. Every completed transaction has both a buying and selling side; their disclosed identities and remaining holdings require evidence outside this calculator.

Check the original disclosure before drawing a conclusion

Use the NSE bulk and block archives for the reported security, participant, side, quantity, date and price. Compare like-for-like dates and distinguish a disclosed buy from the participant’s overall position. A purchase entry alone does not describe their full portfolio.

If you need a volume comparison, obtain actual volume history for the same security and a clearly defined period. Do not reuse a multiple calculated from the deal quantity itself. The volume profile analyzer also has its own input limits, so read those before expecting historical market data.

Keep facts and interpretations separate in your notes. Save what the exchange reported, what you calculated and what remains unknown about the motive. The FII/DII activity analyzer concerns combined foreign and domestic institutional activity; a company deal cannot by itself establish market-wide institutional flow.

Block Deal Window Rules

Block deals take place in two short windows, outside the normal order book. Under the framework SEBI set in its circular SEBI/HO/MRD/POD-III/CIR/P/2025/134 dated 8 October 2025, the minimum order size is Rs 25 crore. Press coverage of the circular reports these features: a morning window from 8:45 to 9:00, with the previous day's close as the reference price; an afternoon window from 2:05 to 2:20 pm, using the volume-weighted average price of trades from 1:45 to 2:00 pm as the reference; and orders within 3% either side of the reference price. The same circular says block trades must result in delivery and cannot be squared off or reversed. Confirm the timings and band on the exchange or SEBI page before relying on them.

Made-up arithmetic: at a price of Rs 500, a Rs 25 crore minimum is 25,00,00,000 / 500 = 5,00,000 shares. If the reference price were 100, a 3% band would allow prices from 97 to 103.

Does a Bulk Deal Move the Price?

Sometimes the price moves around a reported deal, and sometimes it does not. A bulk deal is reported after it has traded, so the move you see may already have happened. A block deal in the window is struck at a price within the band, which limits how far its own price can sit from the reference. Beyond that, no study here shows that a given deal predicts the next day's move, and this tool does not test one.

Many factors can explain a price change on the same day, such as results, news, index changes and the wider market. A deal is context. It is not a signal, and the buyer's motive is unknown. A seller can be a fund taking profit, a promoter placing shares, or an investor rebalancing.

Following Up in a Journal

If you want to see whether bulk deals mean anything for your own trading, record it rather than guess. In OneTradeJournal, log each trade by hand and write the deal details in the notes: date, side, quantity, price and the exchange. Tag the strategy (for example, 'bulk deal watch') and note your emotion and plan deviation. After a number of trades, the strategy report shows whether those trades did better or worse than your others. The app does not track deals or give market data, so the deal itself comes from the exchange list.

Bulk and block deal questions

Sources

• SEBI: Consolidated trading rules: bulk disclosure (checked 15 October 2026).
• SEBI: Review of Block Deal Framework (checked 15 October 2026).
• NSE: Market segments: current block window (checked 15 October 2026).
• NSE: Older inter-institutional and block-deal page (checked 15 October 2026).
• NSE: Bulk and block deal archives (checked 15 October 2026).
• NSE: Bulk-deal disclosure account and side rules (checked 15 October 2026).