Electronic Trading: Conclusion

If you are a long-term investor, you can take this tutorial with a grain of salt. At least now you have some insight into how electronic systems give direct access to the market. We hope this has enlightened your outlook and helped you achieve a greater understanding of how the execution of stock orders is done. For those who are looking to become a trader, this is the tip of the iceberg and we'd advise you to do a lot more research in this area before jumping in.

Let's recap what we have learned:

•The NYSE is an auction market and uses specialists to trade securities.
•The Nasdaq is an OTC market where trading is facilitated through market makers.
•Each stock listed on the NYSE is allocated to a specialist who matches up buyers and sellers, provides liquidity and finds the fair price at the beginning of each trading day.
•A market maker provides continuous bid and offer prices within a prescribed percentage spread for shares in which they are designated to make a market.
•SuperDOT system is an electronic system used to place orders for stocks on the NYSE.
•ECNs network major brokerages and traders, so that they can trade between themselves without involving a middleman.
•SOES is an automatic order execution for individual traders with orders less than or equal to 1,000 shares.
•There are three levels on the Nasdaq that vary on the amount of information and access they provide to investors.

Electronic Trading: Level I, II and III Access

There are a variety of ways in which Nasdaq quotes security prices to the public. These levels vary on the amount of information and access they provide to investors.

Level I
This type of quote is most often published on the net as a "real-time quote." Level I consists of real-time bid/ask quotes for securities trading on the Nasdaq stock market. This type of access does not disclose who is bidding or asking for the stock, and it does not show how many shares the market maker is looking for. Real-time quotes show the current quote, but it may be from a different lot than what you are trading. Market makers love clients with this type of access because it doesn't show you the order sizes, and therefore your order may be passed around or held until market makers can profit from your order.

Level II
This type of quotation system is a step up from the Level I. Level II access provides real-time access to the quotations of individual market makers registered in every Nasdaq-listed security as well as the offering or bidding lots that they are looking for. This level of access also gives the name of the market maker looking to trade the stock. It allows traders to see what market makers are showing the most interest in a stock and to identify the patterns for each market maker. Level II access is available over the internet - but at a cost. This can range in the hundreds of dollars per month depending on the company. For clients placing a large number of trades, the firm may waive the access fee because they will make up the costs on your commissions.

Level III
This is a trading service consisting of everything in Level II plus the ability to enter quotes, execute orders and send information. This service is restricted to NASD member firms that function as registered market makers. Level III allows you to enter bid/ask quotes as the trades are being executed right in front of you. It is the fastest way to execute a trade and is typically found only on the trading floors of brokerage firms and market makers.

Electronic Trading: Electronic Communications Networks (ECNs)

An electronic communication network (ECN) is an electronic system that attempts to facilitate (for market makers) or eliminate (for individual investors) third party orders entered by a client's brokerage to be executed in whole or in part. ECNs network major brokerages and traders so that they can trade between themselves without having to go through a middleman. The advantage of an ECN is that it displays orders in real time, whereas on the NYSE, most investors are limited to only viewing the best bid and ask prices. (For related reading, see Direct Access Trading Systems and Introduction To Level II Quotes.)

There are several variations of ECNs in the market, each of which are slightly different. Here are some of the more popular ones and a summary of their basic characteristics:

Instinet
Instinet was the first ever ECN, founded in 1969. It was originally a way for brokerages to display bid and ask prices for practically every stock in North America and abroad and was first used by institutions to transact with each other. Today it also includes a select group of smaller brokerages. Instinet is used to execute a large proportion of orders on Nasdaq and is primarily entered by market makers. Because of this exclusive access many of the large block orders on Nasdaq stocks are traded through Instinet. More recently, Instinet has tried to level the playing field by lowering access fees and allowing individual investors and small firms to access its orders.

SelectNet
This electronic system is primarily used for trading between market makers. SelectNet is known as a negotiable system, which means that market makers may or may not execute your order immediately, as on other ECNs, although they are required to execute immediately if the order is at the advertised price and it appears on the market maker's screen. SelectNet is popular among traders because orders can be preferenced, which allows a trader to isolate and trade with a particular market maker. This is advantageous because traders can target market makers who are active in the stock he/she wants to trade. This way the trader will get immediate attention, which usually results in a faster execution.

There are a few networks that are used to facilitate trading on Nasdaq stocks. One, the small order execution system (SOES), we will discuss next, but there are also other ECNs offered by Bloomberg, Terra Nova and others.

Electronic Trading: The Role of a Specialist

The NYSE facilitates trading through a human being who is known as the specialist. Each stock listed on the NYSE is allocated to a specialist and all the buying and selling of a stock occurs at the location of this person, known as "the trading post." Buyers and sellers represented by a floor trader will meet at the trading post to learn about the best current bid and ask price for a security. These bid and ask offers are called out loud and indicate the current prices to any interested party. A trade will be executed when the bid and ask orders meet. (For more insight, see Why The Bid-Ask Spread Is So Important.)

The specialist doesn't only match up buyers and sellers. Many specialists are forced to hold an inventory of shares themselves to minimize the imbalance of buy and sell orders. The specialist does this until an equilibrium price is reached, which is when demand and supply are very close. Buying an inventory of stocks is not a common occurrence. In fact, it is estimated that a specialist will be in on only one out of every 10-15 trades.

Another duty that a specialist attends to occurs if a customer's order is priced at a level higher than the lowest ask, or lower than the best bid price (known as a stop order). The specialist will then hold the order and execute it if and when the price of the stock reaches the level specified by the customer. (For related reading, check out Understanding Order Execution and The Basics Of Order Entry.)

A final responsibility of the specialist is to find a fair price for each of the stocks that he or she is responsible for at the beginning of every trading day. This fair price is based on the current supply and demand of the stock. The NYSE opens for trading at 9:30am, but if the specialist can't find a fair price, he or she may delay the opening of trading on a stock until that fair price is found.

It is the specialist's job to act in a way that benefits the public. Because specialists are responsible for keeping the market in equilibrium, they are required to execute all customer orders ahead of their own.

Electronic Trading: The Nasdaq Vs. The NYSE

From a glance, the difference between the New York Stock Exchange (NYSE) and Nasdaq may not be marked. The NYSE lists household names like Coca-Cola, Wal-Mart, Citicorp, and General Electric, whereas the Nasdaq is home to many of the tech giants such as Microsoft, Cisco, Intel, Oracle and Sun Microsystems. Besides the heavy tech weighting, the fundamental difference between the two exchanges is in the way securities are traded.

NYSE

The NYSE is an auction market that uses floor traders to make most of its trades. Each stock on the NYSE has a specialist; this is a person who oversees and facilitates all of the trades for a particular stock. If you wish to buy a stock that trades on the NYSE, your broker will either call your order to a floor broker, or enter it into the DOT system (which we will discuss later on). (For more insight, see Markets Demystified and The Tale Of Two Exchanges: NYSE and Nasdaq.)

Nasdaq

The Nasdaq, on the other hand, is not a physical entity. The Nasdaq might be known for its fancy MarketSite Tower and broadcast studio in Times Square, but very little is done there. The Nasdaq is an over-the-counter (OTC) market and it relies on market makers rather than specialists to facilitate trading and liquidity in stocks. For each stock, there is at least one market maker, (large stocks such as Microsoft have several), whose duties we will discuss later on. (Want to learn more? Read What's the difference between a Nasdaq market maker and a NYSE specialist?)

Rather than being an auction market, the Nasdaq is a communications network between thousands of computers. Instead of brokers calling out orders, market makers place their names on a list of buyers and sellers, which is then distributed by the Nasdaq in a split second to thousands of other computers. If you wish to buy a stock that trades on the Nasdaq, your broker will either call up a market maker with the information of your trade or enter your order into a Nasdaq-sponsored online execution system.