Buy-in What is it?

You should know the terminology involved in stock market trading if you wish to invest in it. When you purchase or buy stocks, they are transferred to your Demat account within the agreed settlement period. What happens if your purchase order is not fulfilled or the settlement is delayed? Buy-in stocks are a way to get around this problem. What are buy-in stocks? Buyers have the right to seek a remedy if the seller fails to deliver the stock within the agreed time frame or doesn't deliver it at all. The buy-in process in global stock exchanges, such as New York Stock Exchange (NYSE), allows the buyer to replace the original transaction by directing a third party or a buyin agent to manage the transaction, by buying and delivering the stocks. A buy-in notice can be issued by the stock exchange to allow a seller to repurchase stocks.

Stock exchanges in India, including the Bombay Stock Exchange and the National Stock Exchange (NSE), use a different process called buy-in stock auction. This involves the exchange selling the stock to third parties at the best rates.

Understanding the price difference settlement of buy-in stock definition: The price difference between original transaction price and buy-in purchase price (second transaction or repurchase) between buying and selling parties is settled in the following way:

Buy-in stocks definition when the price of the second transaction/repurchase is higher than the original transaction: There could well be a situation that the price of the particular stock increased between the original and second transaction. In such cases, the seller would pay the difference to the buyer.

Buy-in stocks definition when the price of the second transaction/repurchase is lower than the original transaction: There could also be a scenario when the market price of the specific stock plummeted from the date of original transaction. If the buy-in price is lower than that of the original transaction, cash payments will move in the opposite direction. The seller will pay the difference in cost to the buyer.

Definition In context of the NSE, both stock exchanges use the T+2 (Trading +2) rolling settlement method. This means that a trading day's transactions are settled within two business days. Stock exchanges offer buy-in stock auctions in the event of short deliveries or failure to deliver. Auctions are conducted on the T+2 working day, and auction settlement takes place on the T+3 working day.

Benefits of buy in stock auction vs. the buy-in agency framework: Buy-in stock is more efficient than using third-party agents. It allows the whole process to be transparent and also allows more liquidity to enter a market. The original buyer receives the best price. It is more tedious and takes longer to set up an agent. It can also be difficult to find an agent, as there is no legal obligation to do so.

Understanding how buy-in stock auction works: After the stock market informs of an auction, brokers and dealers participate by placing bids for the short position. If the auction is successful, any trader who fails to deliver will be responsible for the auction price and brokerage fees. Penalties can also be applied. If the auction fails, the original purchaser trader will receive a full refund. The defaulter must now pay the higher of the two prices: the current market price or 20% above the closing stock price on the previous trading days.


Before you start your journey into stock market investing, it is crucial to be familiar with key terminologies, such as buy-in stocks. It is important to select a reliable and trusted broking company. Trusted financial partners provide comprehensive market reports, stock updates, and answers to your questions such as where to buy stock. You should look for features such as 2-in-1 Demat cum trading accounts and cutting-edge trading platforms

What is Share Market?

How Does the Share Market Works?

Benefits Of Stock Market

Everything On Indian Stock Market

How to Invest in Shares

Basics of Stock Market

Tips for Share Market

Investment Guide for Share market Investments

How to Invest in Indian share Market?

What are Shares?

All About Equity Market

All About Equity Derivatives

All About Dividends

Risk Management Strategies

Tips For Young Investor to Manage Portfolio

Analysis of Financial Statements

All About Investments

3 Key Benefits of Investing

Large caps vs Mid caps vs Small caps

Choosing Equity over Gold, FD, Real estate. Why?