The bid & ask refers to the price that an investor is willing to buy or sell a stock. The bid is the highest amount that a buyer is currently willing to pay, whereas the ask is the lowest amount that a seller is currently willing to sell. The numbers next to the bid/ask are the “size”. The bid size displays the total amount of desired shares ... Read More.
买入价是指投资者愿意买卖股票的价格。买入价是买方目前愿意支付的最高金额，而卖出价是卖方目前愿意出售的最低金额。买入价/卖出价旁边的数字是“尺寸”。出价大小显示所需份额的总数...阅读更多。 to buy at that price, and the ask size is the number of shares offered for sale at that price. The data displayed in the quote bar updates every 3 seconds; allowing you to monitor prices in real-time.

The bid-ask spread can indicate a stock’s liquidity, which is how easy it is to buy and sell in the marketplace. Often, a smaller spread suggests higher liquidity, meaning more buyers and sellers in the market are willing to negotiate. In contrast, a larger spread suggests lower liquidity, as there are fewer investors willing to negotiate. You can use the bid-ask spread to determine whether to place a  market order or limit order when trading, helping you to optimize your price and have a successful order execution.

Real-time bid and ask information is powered by Nasdaq Basic, a premier market data solution. This data feed is available via Nasdaq Data Link APIs; to learn more about subscribing, visit Nasdaq Data Link's products page. ... Read Less.