Day Trading Stocks

Day Trading Systems

Day Trading Systems

Basic System Components

With regard to day trading systems, whether you plan to be a discretionary day trader or completely automate your stock day trading, most intraday trading systems must consider the following components:


  • The ENTRY which originates from your setup and trigger to get you into the trade.
  • The STOP which controls your risk on the trade.
  • The EXIT which is the result of the initial stop being moved in the desired direction of the trade or a target price being placed at the time of entry.
  • The POSITION SIZE (trading money management) of the trade.


Day Trading Systems Flow Diagram

The old saying that “amateurs concentrate on ENTRIES”, is probably true.

After all, that’s the interesting part — looking at all those charts and figuring out how you’re going to get in all those money making trades. That’s what I did when I was a newbie twenty years ago, and if you’re a newbie right now, that’s probably what you’re doing too. Right?

Well, as you gain experience with day trading or trading in general, you’ll come to realize some cold hard facts. One of those facts is that you’d better understand the concept of POSITION SIZE before putting any serious money into trading.

All of the above components of a day trading system are important, but if the term position size is foreign to you, do yourself a favor and learn something about it. I promise, it’s an easy concept to learn and I’ll keep the explanation as simple as I can.

For those of you saying to yourself “Hey, I thought expectancy was part of a trading system”….don’t worry, I’ve got a separate page for that and we’ll go over that later.


I consider day trading strategies to consist of three basic steps:

    1. Set-up that puts the trader into ‘alert mode’ or ‘watchlist mode’ for a particular stock. This might include scanning stocks for particular patterns to trade or it might have to do with certain stocks meeting certain price gain and/or volume requirements. It all depends on the methods used by the trader. But whatever the strategy, it serves to put individual stocks on notice as having “potential” for a trade that day. One might post these stocks up in a tile fashion on their screen once found, with buy stop orders in place, so that they might watch for orders to be triggered.



    1. Trigger or Signal that initiates a Long or Short position in a stock. A simple example is a price move above a particular line of resistance.



  1. Stop that is either placed manually by the trader or automatically by the trading software.

As you can see by comparing to the list at the top of the page, trading strategies (under my definition) contain the work of finding or locating individual stocks to trade that day, setting them up for a Long or Short trade and immediately placing a stop order on that trade.


It requires possibly the most time consuming and interesting parts of the trade, but does not contain ALL, nor the most important components of a trade.


There are three basic ways that traders go about using day trading systems:

  • You can trade them 100% automatically using automated trading software. All of the above components of a system are initiated by the program’s algorithm without the trader’s assistance. The trader does not normally interfere with the programs decisions, unless the drawdown of the trading system seems completely out of normal system limits.
  • You can trade them semi-automatically. Which means software plays the role of assisting a trader to locate stocks automatically that meet his programmed criteria, and may even set up an order for him, but the trader decides using individual judgment on each stock, whether or not to hit the trade. Once in the trade, the semi-automatic day trading system would then take over and manage all exits.
  • A discretionary trader would use a system to trade off of, but would have very little, if any automation in his process. An example of this is a trader that uses a list of stocks such as a gainers or gap list to ‘cull’ or sort stocks for potential trades. Or, a trader that uses a third party stock scanner to find stocks for trades that meet his system’s requirements. Another example is the trader that has a complete and backtested day trading system, that he trusts, but prefers to trade with 100% discretion as opposed to 100% automation.


As you can see there’s some different roads you can go down during your trading journey and quite a bit of decision making that you’ll need to do before actually starting to trade. Some of these decisions will be based on your individual background.

For instance, how deep is your computer programming knowledge? Strong programming and math skills will certainly make it easier to go 100% automated.

But, newer more user friendly software is coming on the market all the time, that make it easier for non-programmers to get involved in automated trading.

If that’s the direction you want to take and don’t currently have the skills, then you might want to check out my list of books on trading system design => trading books [choose the “trading system design” category].

So, don’t necessarily rule automated day trading systems out if programming isn’t part of your education.


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