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# Market Data

Requesting market data for event contracts will follow the same request structure as for any other security type.

Noted in our [Contract Definition & Discovery](/tws-api/doc/event-trading/contract-definition-discovery/introduction) section, ForecastEx instruments do not support buying and selling. Therefore, "BID" and "ASK" values will not correlate to buy and sell values, but the "Highest Bid" and "Buy **Yes** Now at" prices for the Bid and Ask respectively.

Because "BID" and "ASK" do not correctly directly to Buying and Selling, historical "Trades" nor real-time "Last" prices will not be available.