Grey market

Definition

Informal, off-exchange trading in shares of companies that have not yet listed publicly — most famously the National Stock Exchange of India (NSE) itself, whose stock changed hands this way for years before its 2026 IPO filing.

Why it matters for a secondary

The grey market is India's unofficial secondaries market for high-profile unlisted names: it sets an informal price anchor that a formal secondary or IPO-stage OFS often has to price against.

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How it works in practice

India's grey market is an informal, unregulated arena in which unlisted shares and IPO applications change hands ahead of listing, with prices quoted by dealers rather than by any exchange. It functions as a sentiment indicator — the 'grey market premium' is widely reported before large IPOs — without any of the settlement, disclosure or recourse protections a regulated market provides.

A concrete illustration

Ahead of a large listing, dealers quote a premium to the IPO price. Retail participants treat it as a forecast of listing gains, and it frequently moves in the days before listing. When the actual listing prices below that expectation, there is no counterparty obligation, no clearing house and no complaint mechanism behind the earlier quote.

What people most often get wrong

A grey market price is an opinion with a number attached. It is neither regulated nor guaranteed, positions cannot be enforced in the way an exchange trade can, and treating it as a valuation — rather than as a rough read on sentiment — is the most common way individual investors get hurt in Indian pre-IPO activity.