Determining Which Stock to Buy

Which stock to buy for long term gain is easy to figure out after the fact yet not so easy on the day that you want to buy.

Do you know which stock to buy or how to pick stocks? You may have heard some of the following: buy new highs, buy strong stocks in strong sectors, buy moving average crossovers or buy dividend stocks because they are safe. However, in many cases, which stock to buy is dependent on what type of trader you are and what your goals are.

How to know which stock to buy?

stock chart showing buy point

In order to know how to pick stocks, first you need to know what type of a stock market trader you are. For the purposes of this site, here are some types of traders and the types of stocks they may choose to buy.

Scalpers and day traders generally do not really care about what they trade as long as the stock trades a lot of volume, is volatile and offers a short-term trading opportunity. When you are new to the stock market, you should likely not be in this group. This group plays a fast game and beginners are likely to lose a lot of their capital.

Typically these traders would be looking to trade using charts under 30 minutes and more likely in the 1 to 5 minute time frame. For these traders they want to be in and out in within the day and as long as the stock is trade-able today, they don't really care if it is not around in a month. 

A swing trader is looking for a short-term move lasting days to weeks. They would generally exit a trade at the first signs of weakness. A swing trader would likely be looking for a stock that is going in the same direction as the market but may go against the market direction in specific cases. Keeping their risk under control and with a desire to make a large reward to risk ratio in a short period of time.

Consider the 39-minute stock chart of GM in early October 2024 when the low of Oct 3 was just above the low on September 11. On October 4 the stock jumped up in price and stayed in a pretty tight range for 2 days.

A swing trader might buy a breakout from this short pattern with the assumption that whatever caused the gap will move the stock higher. In this case, the exit would be just under the low on Oct 7 or 44.99 which is just below the high prior to the gap. The buy is $46.13 or just above the high of the gap. The risk is $1.14 or about 2.5%. Buy 200 shares for a risk of $228.

The trader then moves the stop loss to each new inflection point after a new high is reached. With a stop at $48.49 on September 21 the trader sees the large gap on September 22 and monitors it closely. A decision to sell 100 shares at $52.39 is made after the inflection point on Sept 23 forms. These shares are sold on Sept 25.

39 minute stock chart of GM

Chart courtesy of StockCharts.com

The stock continues to drop yet does not hit the stop at $48.39. As the price continues to go higher the stop keeps being increased until it is at $56.89 and then the final shares are sold on November 18. Total profit is about $1,852.

Now compare the above trade to a position trade which is shown below. In this case, the trader uses a daily chart and sees the same low in early October and the gap. As a position trader the buy is still at $46.13 yet the stop loss is placed lower at $42.59 which is about one ATR below the low of September 11, 2024. Now the risk is $3.54 and therefore only 64 shares are bought to align with the same risk taken by the swing trade.

Daily stock chart of GM November 2024

For this trade, the low in early October was supported by the gap break and the cross seen in the Stochastic indicator. As before, the trader continues to raise their stop with each successive new high and now has a stop in at $54.39. When this gets taken out the profit on the trade will be about $528.

No matter how much knowledge you posses, there is always the probability of a loss

A position trader is looking for a long-term move lasting weeks to months. They would generally try and ride most of an up cycle and hang on to the dips along the way. Position traders can be looking for stocks where a change in trend has occurred.

A value investor is looking for a stock which is perceived to be selling for less than it will be worth in the future. Value investors generally use fundamental analysis to try and determine what a stock is worth. Here, which stock to buy is critical due to the generally long duration of your holding period. The investor would want a company that continues to increase sales and profits and possibly a dividend.

Generally, which stock to buy becomes less important, the shorter your trading time frame.

The volume a stock trades in a day may be a concern for you when picking a stock. When the volume is too small, generally less than 50,000 shares per day, it may be difficult to get out of the stock quickly. Also, if you are planning on buying thousands of shares, you may increase the price of the stock with your buying. Limit orders can be useful for these low volume stocks.

You could also follow a tried and true saying, "The trend is your friend." Simply put, you generally should not be buying stocks in a downtrend. Also, the trend is your friend until it isn't.

For another approach on how to pick stocks or which stock to buy read Stan Weinstein's "Secrets for Profiting in Bull and Bear Markets."


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