Common Investing Mistakes to Avoid as a Beginner Investor

Over the long haul, the stock market tends to make most participants very wealthy. Very few people reach retirement without the help of the stock market to compound their wealth along the way.

While the stock market makes many people rich, it also makes many people poorer. If the long-term trend is up, everyone who participates should see their wealth grow, but some people end up lagging the market by making a few common errors.

common investing mistakes

Common Mistakes to Avoid

  1. Managing your money before you’re ready – Investors who are new to the concept of the stock market would be wise to start first with broad market exchange-traded funds or index funds. Buying into an index fund lets you grab onto the powerful compounding power of a long-term investment in the stock market without interjecting your own inexperience into the results. If everyone could jump in and beat the market from day one, everyone would be doing it.
  2. Failing to do the due diligence – Managing your own money takes time and effort. Anyone who manages their own money will need to dedicate a substantial amount of time to following their investments. Individual stocks require the most time. Companies file quarterly reports three times per year (10-Q reports), annual reports every year (10-Ks), while releasing a myriad of other important releases (8-Ks) each year. To give an example of the amount of information an investor has to consume, Exxon Mobil’s annual report from 2011 was 111 pages. The quarterly reports were roughly 30 pages each – and we’re only talking about one stock.
  3. Making trends of things that don’t exist – During the dot com bubble of the late 1990s, one fund manager declared that he expected to make 40% per year for his investors for the next 10 years. Keep in mind that this person was college educated in finance, had the credentials to manage billions of dollars, yet still fell for the “get rich quick” mindset that internet stocks would go up by nearly 5 times the historical average for a decade straight. When the market or your individual stocks are going up, it’s easy to project that undeserved bullishness into the future, often to be disappointed with the results.
  4. Ignoring the role of time – Time plays an important part in deciding how you allocate your investment capital. While stocks have historically returned roughly 8% per year, their best years have been much higher performing and their worst years much worse than 8%. You should only invest funds in stocks if you see no need for the money for the next decade. Invest in bonds only if you won’t need the money within the next few years. And if you need the money for a short-term use, then keep it in cash or CDs. Don’t put your down payment on a dream home in your brokerage account!

Avoid Mistakes to Improve Performance

The best investors are the people who avoid making mistakes. Having some self-awareness helps a lot here; if you are not interested in watching the markets religiously, stick to index funds or hiring mutual fund managers. If you are up for the challenge and have an interested in all things accounting and finance, managing your own money – after doing complete due diligence (see article on how to pick a stock) – may be right for you.

5 Responses to Common Investing Mistakes to Avoid as a Beginner Investor

  1. Good post, but i’m not sure I 100% agree with you when you say – “The best investors are the people who avoid making mistakes”.

    Obviously in the long run you are correct, but the most important investing lesson I ever learned was because I made a mistake. I lost about 70% of my original investment (fortunately it was only small when I started out) in about 1 week.

    To this day I keep that stock in my portfolio as a reminder of why I stick to my rules and what not to do. Currently it is down about 90% from where I bought it.

    I would personally change what you said to say “The best investors are the people who learn from their mistakes and don’t repeat them”

  2. Good post. I agree with many of the points, but I would also echo Glen’s comments that the best investors are ones who learn from their mistakes. Mistakes are bound to happen, no matter how good of an investor you are.

    I also think education is key to investing. There’s a wealth of info available and much of it is free. If you can teach yourself and learn how to separate your emotions from your investing then you’re off to a great start.

  3. TAOST says:

    Good list…

    I always include over/under trading (size or frequency) as well. Beginners will often fail to size positions correctly trading too large for their account balance or too small to make a difference. Similarly, trading too frequently or failing to trade enough can impede performance.

  4. Ravi Ahuja says:

    Mistakes are part of life but investing mistakes can loose your lot of hard earned money. Yes as you sad beginner investors can do lot of mistake but if you invest after some research you can avoid these mistakes.

  5. Hey this is a great post! I’m definitely a beginner investor and these tips are total applicable to me, especially the last item – a good rule of thumb to go by.

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