Comprehensive Guide to Day Trading Practice Test

The spread represents the difference between the bid (selling) price and the ask (buying) price, and it shows two key things: how much profit a market maker can earn on each trade and how easily the instrument can be traded. A small spread means there are many buyers and sellers, so trades can be executed cheaply and quickly, reflecting high liquidity. A larger spread indicates lower liquidity and higher cost to trade, since market makers charge more to compensate for greater risk. This idea is why the spread is described as the dealer’s profit margin tied to liquidity. It isn’t about a company’s quarterly earnings, the number of outstanding shares, or how long the trading day lasts.