What Happens After IPO Allotment? ASBA Refund, Demat Credit & Listing Day Strategy

The Post-Allotment Lifecycle Under SEBI T+3

The Securities and Exchange Board of India (SEBI) revolutionized the Indian primary capital markets by mandating the **T+3 settlement timeline** for all Mainboard and SME initial public offerings. Under this rule, the entire process from issue closure to stock exchange listing takes just three business days.

Understanding this compressed timeline helps investors manage their bank liquidity, monitor depository share transfers, and prepare listing day execution plans.

Day T+1: Finalization of Basis of Allotment

On the business day immediately following issue closure (Day T+1), the registrar, designated stock exchange, and lead merchant bankers finalize the basis of allotment:

• Retail Category (Under ₹2 Lakh): Handled via computerized proportional lottery if the category is oversubscribed. Each successful applicant receives exactly one minimum lot.
• sHNI Category (₹2 Lakh to ₹10 Lakh): Minimum allotment of 1 lot allotted via lottery based on oversubscription ratio.
• bHNI Category (Above ₹10 Lakh): Proportional allocation or lottery depending on category subscription multiples.

Day T+2: ASBA Fund Unblocking & Demat Share Credit

Day T+2 is the critical operational day where two parallel banking and depository actions take place:

1. Fund Unblocking & Refund Mechanism (ASBA / UPI)

When you apply for an IPO, your funds are never debited upfront; they remain blocked in your bank account under an ASBA lien or UPI mandate. On Day T+2:

• Non-Allottees (Refund/Unblock): The registrar sends unfreeze instructions to sponsor banks. Banks automatically release the blocked amount back to your available balance.
• Allottees (Debit): The exact purchase price for the allotted shares is debited from your bank account, and the remaining surplus is unblocked.

2. Demat Share Credit (CDSL & NSDL)

The registrar initiates an electronic corporate action with India's central depositories (CDSL and NSDL). Allotted shares are credited to your unique 16-digit Demat Account number. You will receive an official confirmation SMS and email directly from CDSL or NSDL by late evening of Day T+2.

Day T+3: Listing Day Mechanics & Execution Plan

On Day T+3, the newly listed equity shares commence trading on the National Stock Exchange (NSE) and Bombay Stock Exchange (BSE). The listing morning follows a structured sequence:

• 9:00 AM – 9:45 AM (Pre-Open Call Auction): Orders can be placed, modified, or canceled. Equilibrium price discovery takes place based on buy/sell order matching.
• 9:45 AM – 10:00 AM (Order Matching Period): The official discovery/opening price is determined by exchange matching algorithms.
• 10:00 AM IST Onwards (Regular Continuous Trading): Normal market trading commences, allowing retail and institutional investors to execute buy or sell orders freely.

Listing Day Profit-Booking Strategies

Depending on your financial goals and market valuation, investors typically adopt one of three strategies on listing morning:

1. Full Listing Gain Exit: Ideal for short-term momentum traders who applied purely to capture the Grey Market Premium (GMP). Place a market sell order during the pre-open session.
2. Capital Protection Strategy (Sell Principal Lot): Sell enough shares to recoup your initial ₹15,000 investment and hold the remainder as free equity for long-term compounding.
3. Long-Term Value Holding: If the company possesses robust fundamentals, high Return on Equity (ROE), and reasonable P/E valuation against peers, hold for multi-year wealth creation.

What If Your Bank Funds Are Not Unblocked on T+2?

If your bank funds remain blocked beyond the scheduled date, take the following steps:

• Log into your UPI app (Google Pay, PhonePe, BHIM, Paytm) and check the Mandate status under Active Mandates.
• Send an email to the registrar's grievance desk with your Application No., PAN, UPI Reference ID (RRN), and Bank Account Number.
• If unblocking takes more than 4 working days past the timeline, SEBI mandates compensation of ₹100 per day from the responsible intermediary.