Auction market on NSE and BSE

Mon, 11 May 2026 00:00:00 +0000

The auction market on the National Stock Exchange (NSE) and Bombay Stock Exchange (BSE) is a special trading session conducted by the exchange’s clearing corporation to resolve cases where sellers in the normal equity settlement fail to deliver the shares they are obligated to deliver. This non-delivery, called a short delivery, arises when a seller who executed a trade on the exchange does not place the required shares into the clearing system by the settlement deadline. To protect the buyer, the exchange runs an auction to procure the undelivered shares from willing sellers.

BTST (Buy Today Sell Tomorrow) on Zerodha

Mon, 11 May 2026 00:00:00 +0000

BTST (Buy Today Sell Tomorrow) is a trading strategy in which an investor buys equity shares on one day and sells them on the next trading day, before the purchased shares are credited to their demat account through the normal settlement cycle. On Zerodha, BTST trades are executed using the CNC product code for both the buy and the subsequent sell order.

Under India’s T+1 settlement framework, shares bought on Day 0 (T) are credited to the buyer’s demat account on Day 1 (T+1). BTST involves selling these shares on Day 1 before the credit arrives, technically selling shares that are in the pipeline of settlement rather than in the demat account. This creates a specific settlement risk called short delivery.

Short Delivery on WebNotes

Auction market on NSE and BSE

BTST (Buy Today Sell Tomorrow) on Zerodha