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Friday, 12/28/2018 6:06:31 PM

Friday, December 28, 2018 6:06:31 PM

Post# of 122042
I know there is 3 posters on here confused about MM's so, this is straight from the source!

Trade Execution:
Jan. 16, 2013

What Every Investor Should Know
When you place an order to buy or sell stock, you might not think about where or how your broker will execute the trade. But where and how your order is executed can impact the overall costs of the transaction, including the price you pay for the stock. Here's what you should know about trade execution:

Trade Execution Isn’t Instantaneous
Many investors who trade through online brokerage accounts assume they have a direct connection to the securities markets. But they don't. When you push that enter key, your order is sent over the Internet to your broker—who in turn decides which market to send it to for execution. A similar process occurs when you call your broker to place a trade.

While trade execution is usually seamless and quick, it does take time. And prices can change quickly, especially in fast-moving markets. Because price quotes are only for a specific number of shares, investors may not always receive the price they saw on their screen or the price their broker quoted over the phone. By the time your order reaches the market, the price of the stock could be slightly – or very – different.

No SEC regulations require a trade to be executed within a set period of time. But if firms advertise their speed of execution, they must not exaggerate or fail to tell investors about the possibility of significant delays.

Your Broker Has Options for Executing Your Trade
Just as you have a choice of brokers, your broker generally has a choice of markets to execute your trade:

For a stock that is listed on an exchange, such as the New York Stock Exchange (NYSE), your broker may direct the order to that exchange, to another exchange (such as a regional exchange), or to a firm called a "third market maker." A "third market maker" is a firm that stands ready to buy or sell a stock listed on an exchange at publicly quoted prices. As a way to attract orders from brokers, some regional exchanges or third market makers will pay your broker for routing your order to that exchange or market maker—perhaps a penny or more per share for your order. This is called "payment for order flow."
For a stock that trades in an over-the-counter (OTC) market, such as the Nasdaq, your broker may send the order to a "Nasdaq market maker" in the stock. Many Nasdaq market makers also pay brokers for order flow.
Your broker may route your order – especially a "limit order" – to an electronic communications network (ECN) that automatically matches buy and sell orders at specified prices. A "limit order" is an order to buy or sell a stock at a specific price.
Your broker may decide to send your order to another division of your broker's firm to be filled out of the firm's own inventory. This is called "internalization." In this way, your broker's firm may make money on the "spread" – which is the difference between the purchase price and the sale price.
The graphic below shows your broker's options for executing your trade:



https://www.sec.gov/reportspubs/investor-publications/investorpubstradexechtm.html