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Top 5 Investing Mistakes to Avoid

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Few things are more maddening than making costly mistakes that could easily have been avoided. In an effort to avoid some of these traps when it comes to your money, we asked best-selling author, columnist and financial guru Larry Swedroe to list 5 common investment mistakes for the latest installation of our series "Investing 101."

1) "Recency" - Buying what has recently been up, selling what has fallen down

This self-made word of Swedroe's may be new to you but the concept it addresses is probably more familiar under the terms, ''bad timing'' or " buying high and selling low." As Swedroe puts it, it's like "driving forward but watching the rear-view mirror." Needless to say, chasing yesterday's winners, then panic-selling when they go down is the surest way to achieve terrible performance.

2) Over Confidence

Whether you have too much confidence in your investment skills, your stocks, fund or manager picks, or in your ability to time the market, Swedroe says this mistake can prove to be very costly. Telltale signs and risks of over-confidence include trading too much and failing to properly diversify because you believe your own ideas will work so well. "The more you trade the worse you do."

3) Believing That Great Companies Make Great Stocks

Swedroe says, contrary to conventional wisdom, this mistake is one of the most common. Even though growth companies earn a lot more, he says "markets price for risk." What that means is the premium you must pay to own these so-called leaders, has effectively already priced-in the higher growth rate, which ironically, leads to lower expected returns.

4) Failing To Differentiate Between Information And Wisdom

Another area that trips up investors is not knowing the difference between information and something you can actually use to make money. We often hear how a particular event or outcome is ''priced-in'' to a stock or the market, but as Swedroe sees it, unless you know something that nobody else knows (which is unlikely), "information is not value relevant." Much the same way that a point spread neutralizes the betting between a good and a bad football team, differing PE ratios neutralize the expectation between different stocks.

5) Listening to Experts Who Give Forecasts

When it comes to predicting the future Swedroe says "there are no good forecasters," be it about the weather, politics, the economy, geo-political events and all sorts of other common areas of interest. Research shows little if any advantage can be gained by following the changing public proclamations of outspoken and often over-confident pundits.

We want to hear from you! What mistakes have you caught yourself making when building and maintaining your portfolio? Tell us on our Facebook page or in the comment section below..

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20 comments

  • YahooBooHoo  •  Naperville, Illinois  •  2 months ago
    I committed #3, the most common mistake. I went all in on IBM, when it dropped to $47 quite a few years ago. Thankfully, I diversified, on advice of family and "advisors." Whew, what would I have done with all that money, after 4 stock splits and current price of $200?????
  • Jay  •  Clifton, New Jersey  •  2 months ago
    Lear as much as you can and always have a healthy dose of skepticism.
  • Joseph P  •  San Francisco, California  •  2 months ago
    Two words "Intelligent Investor" by Benjamin Graham. Read it, Learn it, Live it.
  • tee fore  •  Minneapolis, Minnesota  •  2 months ago
    there are a few brokers out there that work on commissions based off of portfolio performance, rather than earning commission per trade. this typically works out better due to their incentive to keep your portfolio on track, whereas brokers paid per trade will trade you into poverty and walk away with a pocket full of commissions. lesson learned: understand how your broker earns money from your business.
  • man with glasses  •  Richmond, Virginia  •  3 months ago
    Put your money under your mattress , and sleep on it !!!!!!!!
    • Patrick 2 months ago
      ...so if your house burns down you have less than nothing....good plan
    • man with glasses 2 months ago
      90 5 less chance of happening than a stock crash !!!!!!!!!!!!!!
    • Jay 2 months ago
      So you have nothing when you retire. Accounting for inflation you will be getting at least a real rate of return of around -5%. Very foolish indeed. Try learning how money works before you post.
  • Boris  •  Los Angeles, California  •  2 months ago
    I have always been guided by Will Roger's classic advice, which is still relevant after over 80 years: "Don't gamble; take all your savings and buy some good stock and hold it till it goes up, then sell it. If it don't go up, don't buy it."
  • Boris  •  Los Angeles, California  •  2 months ago
    "Listening to Experts Who Give Forecasts."

    Something wrong here. An expert who actually tells it like it is. How'd he get on Yahoo?
  • WilCox  •  3 months ago
    Ever notice how everyone is a stock guru? No one ever loses money in the markets and most claim to double up each year. Yeah, right....
  • Dean  •  Durham, North Carolina  •  3 months ago
    Many studies have shown that the less tampering we do and the more diverse our portfolios are, the better off we will be in the long run. Yes, some beat the trend short term, but we almost always will regress back toward the mean.
  • A Local  •  Chicago, Illinois  •  4 months ago
    In Jan. 2008 I studied Money Magazine's "12 Stocks to Buy in 2008" and bought two of their picks: GE and United Technologies. I would have bought them all if I'd have had the money, the case they made was so compelling! I was tired of my murky mix of mutual funds (inherited from old 401k plans where I once worked) which were going nowhere. I still pull out that magazine article occasionally and most of the stocks on the list are almost 50% down (or more)-- and my GE stock has far from recovered. But I learned an important lesson: be skeptical and don't specific stock advice from any "expert."
    • Steve 3 months ago
      There are some experts who do provide good investing advice, unlike "Money" and some other mags, that often act as propoganda sheets for Wall St. But they cost money -- a couple hundred or more per year, for those who have good records. Recommend reading Mark Hulbert's newsletter, which evaluates a few hundred financial newsletters, and gives objective profitability rankings for various periods, from one year up to 10 years or more.
  • not I said the ape  •  4 months ago
    after reading the first four points, I started to think that there was no future in investing for me, but then after the fifth, i started to regain a little confidence. a mistake I have recognized is the presumption that a big dividend will support a high stock price. theyll straight eliminate that dividend and send you packin to the poor house. so while my strategy is to buy as prices go down and sell as prices go up, I dont immediately assume that the dividend yield will guarantee a future rise in price
    • Terry Mitchell 4 months ago
      NISTA, dividend yield will rise as stock price falls, and vice versa, trying to find big yields (chasing yield) is a no no..the payout ratio is something to look at as well, i.e. how much are they spending to maintain the yield, is it safe going forward? If you run a sceen looking for divended yield
  • Bull  •  4 months ago
    My strategy. Hire yourself a stock broker from a premier firm and do the opposite of what he tells you.
    • Steve 3 months ago
      Funny -- but often true.
  • Recovering Alcoholic  •  Little Rock, Arkansas  •  4 months ago
    6. Do not buy high and sell low.....
  • Scott  •  Tampa, Florida  •  4 months ago
    The Fund Managers are obviously ripping us all of and there is NO Regulation.
    If you look at VGENX for instance, it has only been priced around $60 a share for months but Gas is at $3.50 a gallon. The last time gas was that high VGENX was in the mid 70's. The biggest holding of the fund is XOM, so there should be a direct correlation between Gas prices and Fund's price. It looks as they are also ripping millions off on VGPMX. If Vanguard is doing it - sure all the rest are. I guess that means our 401K and other IRA's will never grow if invested in Mutual Funds as the managers steal the cash and DE-value the fund regularly....
  • Ex Exec  •  Reno, Nevada  •  4 months ago
    Listening to the ex-advisor, that Now is the time to Buy, when the stocks are on a rise.
    When the bottom drops he does/did not answer calls.
  • Walter  •  Doylestown, Pennsylvania  •  4 months ago
    Is there a list. Showing the candidates views on the reccomdattions of the Bowles-Simpson committee report so we can compare?
  • David  •  Raleigh, North Carolina  •  4 months ago
    Excellent article and he left off one important point. Who needs a fund or a fund manager? Those 5 points above will indeed make you independent and rich. There is a lot of detail behind those points so study up! It will take about a year of steady reading and investing small amounts then suddenly the above 5 points will become embedded in neuronal circuits!
  • Pratap M  •  4 months ago
    Some of big companies are the best like AAPL, IBM, UTX, AVB, F, KO, BIDU, AMZN, CMCSA, CROX & CAT. Can someone else write in comments and suggest the symbol of say 5 or ten more companies to invest in this kind of market. Do your homework thoroughly, watch the market, read news and reports. Check technical indicators like MACD, P/E ratio and rating like four or five stars and comments like positive, buy and or outperformed. God Bless America
  • carlos a  •  Springfield, Virginia  •  4 months ago
    none
    • Steve 3 months ago
      What is that supposed to mean?
  • Sundog  •  4 months ago
    Almost all of the "Experts" were still bullish right up to the Oct 08 collapse.

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