Specialists are critical to the auction process. They perform a role that could be compared to that of an air traffic controller. Just as controllers maintain order among aircraft aloft, specialists maintain a fair and orderly market in the securities assigned to them.
They manage the auction process, providing a conduit of information -- electronically quoting and recording current bid and asked prices for the stocks assigned to them. This enables current price information to be transmitted worldwide, keeping all market participants informed of the total supply and demand for any particular NYSE-listed stock.
Each stock listed on the NYSE is allocated to a specialist, a broker who trades only in specific stocks at a designated location. All buying and selling of a stock occurs at that location, called a trading post. Buyers and sellers -represented by the floor brokers - meet openly at the trading post to find the best price for a security.
The people who gather around the specialist's post are referred to as the trading crowd. Bids to buy and offers to sell are made by open outcry to provide interested parties with an opportunity to participate, enhancing the competitive determination of prices. When the highest bid meets the lowest offer, a trade is executed.
To a large degree the specialist is responsible for maintaining the market's fairness, competitiveness and efficiency. Specifically, the specialist performs five vital functions: act as catalysts, and auctioneers, stabilize prices, provide capital.
Provide Capital Finally, if buy orders temporarily outpace sell orders in a stock - or if sell orders outpace buy orders - the specialist is required to use his firm's own capital to minimize the imbalance. This is done by buying or selling against the trend of the market, until a price is reached at which public supply and demand are once again in balance. In this role the specialist acts as a principal or dealer. Specialists participate in only about 10 percent of all shares traded. The rest of the time, public order meets public order, without specialist participation.