Stabilising Agent

When a company goes public, the first few days of trading can be wild. To prevent a freshly listed stock from crashing below its issue price right after listing, SEBI allows a green-shoe option, and the person who runs it is the stabilising agent.

The Role

The stabilising agent is typically the lead manager (Book Running Lead Manager) of the IPO, appointed specifically to manage post-listing price stabilisation. The mechanism works like this: under the green-shoe option, the company can over-allot shares (usually up to 15% of the issue) by borrowing them from a promoter. The stabilising agent holds the extra cash raised. If the share price falls below the issue price after listing, the agent uses that money to buy shares from the open market, supporting demand and cushioning the fall.

How the Loop Closes

Those market-bought shares are then returned to the promoter from whom they were borrowed. If the price instead stays strong and stabilisation isn't needed, the company issues fresh shares to settle the over-allotment. The stabilising activity is permitted only for a limited window after listing (up to 30 days under SEBI's ICDR regulations), and the agent must disclose its stabilisation actions. This is a legitimate, regulated form of price support — not market manipulation — because it's bounded, transparent and tied to the issue price.

Why It Matters

For IPO investors, the green-shoe mechanism and its stabilising agent provide a safety net against extreme first-day downside, which can encourage participation in the offer. It signals that the underwriters stand behind the pricing. However, stabilisation only smooths the early days — it cannot prop up a fundamentally overpriced issue for long, and once the window closes, the stock trades on its own merits. When you read an Indian IPO prospectus and see a green-shoe option with a named stabilising agent, it tells you there's a temporary, regulated buffer designed to protect the listing — useful context for judging the risk of the first few weeks of trading.