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¿Qué es la oferta y la demanda?
¿Qué es la oferta y la demanda?

What is the Bid and Ask?

The bid and ask price are the most important prices to consider when executing a trade in any market. In this article, we will cover the way trading instruments are traded and how the bid and ask price are relevant to a trading strategy, trading costs, liquidity and time frame in which it is being traded.

What is a Bid Price and what is an Ask Price?

The auction

What is the Bid Price?

In any given market, the bid price is the highest price the market is willing to pay for that trading instrument. If there are several buyers, all willing to pay a different price, the highest of those prices will show as the bid. 

The bid price is the highest price at which a seller can sell a trading instrument at any given time.

What is the Ask Price?

The ask price is the lowest price at which the market is willing to sell a given trading instrument. The ask price is also known as the offer price. If there are several sellers with limit orders in the market, the order with the lowest price will show as the market’s ask price. 

The ask price is the lowest price at which a buyer can buy a trading instrument at any given time.

What's the difference between the bid and ask price?

The following is an example of a Forex quote:

GBPUSD: 1.27256/1.27272

In this example, the first price mentioned is the bid price, which will always be the lower of the two prices in a quote. As a seller, this will be the price at which you will be able to sell GBP for USD.

The second price in the example is the ask price, which is also the higher of the two prices. If you are a buyer, this is the lowest price at which you can buy GBP for USD.

Bid and ask prices both show limit orders in the market. A market order would be immediately executed at the best bid or ask price.

On a trading platform, you may sometime sell prices as shown below, which can cause some confusion:


In this case, the bid price is labelled ‘Sell’ and the ask price is labelled ‘Buy’ because these are the prices you can sell and buy at. 

Quote Driven versus Order Driven Markets

To properly understand where bid and ask prices come from, you need to understand the two types of markets; quote driven markets and order driven markets.

Stock Exchange

Quote Driven Markets

A quote driven market is run by a market maker or broker. Their job is to maintain an orderly market by continuously quoting a bid and ask price for each instrument they make a market for. 

Order Driven Markets

An order driven market is entirely made up of buy and sell orders from market participants. There is no middleman, but all orders are processed by a broker who charges commission. Most stock markets are order driven.

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