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To make comparisons between companies, sectors and markets a little easier, there are a number of mathematical models used. The most common and often the most helpful is the P/E ratio. The Price to Earnings ratio takes the share price and is divided by the earnings per share. It is possible to calculate this using past earnings, projected future earnings and with all sorts of moving averages ;-) Therefore, this is one number that it is vital for any investor to know and understand.
In the professional world, one of the key concepts is diversification. Harry Markowitz is a Nobel prize winning economist and one of his major discoveries was that adding new asset classes can dramatically alter the overall risk profile of a portfolio. His finding was that a portfolio that contained very low risk assets would normally benefit from lower volatility and higher returns if a higher risk asset was added. This is due to the likely lack of correlation between high and low risk asset classes.

Businesses you don't understand -- Here's a great rule of thumb that works for beginners and expert investors alike. If you can't clearly explain what a company does and how it makes money in a sentence or two, don't invest in it. There are literally thousands of publicly traded companies to choose from, and you should be able to find plenty of opportunities in easy-to-understand businesses.

Every investor should try to establish what their goals and objectives are prior to investing. There isn’t necessarily a wrong objective, but it’s more important to understand your goals because that will help drive your decisions. For instance, if you plan to regularly trade in and out of stocks, you might be better off opening an IRA account so you don’t have to pay taxes on your trades. If you plan to be a long-term investor, taxes won’t be as important of a factor and you could hold your account in a taxable or tax-free account.


The biggest obstacle to stock market profits is an inability to control one’s emotions and make logical decisions. In the short-term, the prices of companies reflect the combined emotions of the entire investment community. When a majority of investors are worried about a company, its stock price is likely to decline; when a majority feel positive about the company’s future, its stock price tends to rise.
Pro tip: Another way to make sure your portfolio is diversified is to invest if different types of investments. Some people like to mix things up by investing in fine art through Masterworks. Fun fact – blue chip art returned 10.6% in 2018 compared to a 5.1% loss for the S&P 500. Others choose to invest in real estate through a company like DiversyFund.
In that case, it is possible to invest passively in capital markets. This means that a private investor puts aside either a lump sum or an amount each month and the money is invested into a fund. That fund contains the savings of lots of other private investors and is managed by a professional equities investor. The fund will then be invested in an equity market (such as the NYSE) or a sector (such as energy).
Remember that free stock picks usually exist because of the vested interests of the company or the promoter. There are some exceptions, such as in the case of top book publishers, like John Wiley & Sons, who produce works like, "Penny Stocks for Dummies." Their exhaustive vetting process alone is usually thorough enough to provide you with some serious confidence in who they choose.
Alphabet (NASDAQ:GOOGL) (NASDAQ:GOOG) -- As a beginning investor, it wouldn't be surprising if you haven't heard the name Alphabet before, but it's likely you've heard of the company's main subsidiary, Google. As the dominant leader in internet search, Google has an effective duopoly on internet advertising, along with Facebook. Its massive stockpile of consumer data makes its ads extremely effective, and it's tough to imagine any competitor stealing any significant percentage of the market. And Google has the second-most-valuable brand name in the entire world, with an estimated value of more than $130 billion, according to Forbes. The fact that Google's brand has become synonymous with internet search and several other functions gives tremendous pricing power when it comes to selling ads.
At the same time, there are literally hundreds of thousands of individuals who buy and sell corporate securities on one of the regulated stock exchanges or the NASDAQ regularly and are successful. A profitable outcome is not the result of luck, but the application of a few simple principles derived from the experiences of millions of investors over countless stock market cycles.
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