IPO Anchor Lock-in Expirations: Empirical Impact on Secondary Market Volatility and Allotment Valuations

## The Dynamics of Anchor Allocations In Indian primary market offerings (IPOs), institutional anchor investors provide the cornerstone capital. To prevent immediate listing-day flipping, SEBI instituted staggered lock-in requirements under the ICDR Regulations. --- ## 1. SEBI 30-Day and 90-Day Lock-in Architecture ``` IPO Listing Day (T+0) │ ├─► 50% Anchor Shares Locked for 30 Calendar Days │ │ │ ▼ Expiration at Day 30 (First Liquidity Window) │ └─► Remaining 50% Anchor Shares Locked for 90 Calendar Days │ ▼ Expiration at Day 90 (Full Institutional Float Free) ``` Empirical research shows that stocks trading at steep premiums relative to anchor price often face short-term pricing corrections as institutional anchors rebalance allocations. --- ## 2. Regulatory Notice on Grey Market Premiums (GMP) Investors must recognize that **Grey Market Premium (GMP) is an unofficial, unregulated benchmark** operating in unorganized secondary markets. It carries: - Zero regulatory protection under SEBI or NSE. - High counterparty default risk. - Artificial volume manipulation by unverified cartels. --- ## 3. Statutory Disclosures *InvestResearch India does not broker, solicit, or execute primary market applications. Always read the Red Herring Prospectus (RHP) filed with SEBI before applying for any IPO.*