Order-Driven Market

An order-driven market is a financial market structure in which transactions occur through the direct matching of buy orders from investors with sell orders from other investors — without the mandatory involvement of a dealer or market maker quoting continuous prices. In an order-driven system, prices are discovered purely through the interaction of supply (sell orders) and demand (buy orders) submitted to a centralised order book, with the exchange's electronic matching engine pairing compatible orders based on price-time priority. NSE and BSE are textbook examples of order-driven markets — all equity buy and sell orders from all participants are entered into the electronic limit order book (LOB), and trades execute when a buyer's bid meets or exceeds a seller's ask. The transparency of the order-driven model — where all participants can see the full depth of the order book — promotes price discovery and equal access to market information. The key limitation of purely order-driven markets is reduced liquidity for illiquid securities, where wide bid-ask spreads and thin order books can impede efficient execution. To address this, NSE introduced a Market Maker scheme for SME IPO-listed stocks and a Liquidity Enhancement Scheme (LES) for certain derivatives contracts — providing incentives for participants to quote continuous prices, blending quote-driven elements into the predominantly order-driven Indian market structure.