The 3 Biggest Investing Mistakes You Can Make

Published in Investing Strategy on 5 May 2009

Plenty of mistakes have been made over the past 18 months. Make sure you don't fall for these 3 simple mistakes.

"Learn from the mistakes of others. You can't live long enough to make them all yourself." -- Eleanor Roosevelt.

Some mistakes are more painful than others. As we've seen clearly with the fall of the housing market, one financial mistake can ruin a whole lifetime of scrimping and saving.

But I'm not here to talk about the past … let's focus on the common mistakes you should avoid. We can debate about whether the three I've selected are truly the biggest investing mistakes you can make (I invite you to do so in the comments section below), but these are certainly three investing mistakes you don't want to make.

#1 Don't Let Poor Asset Allocation Make You Poor

Before trying to figure out if the latest share tip is worthy of your investment dollars, you need a plan. How much should you put into shares? How much into bonds? How much should just be in an emergency savings account fund?

Four rules of thumb are:

Rule 1: If you need the money in the next year, it should be in a high interest savings account.

Rule 2: If you need the money in the next one to five (or even seven) years, choose safe, income-producing investments such as gilts or bonds.

Rule 3: Any money you don't need for more than seven years is a candidate for the stock market.

Rule 4: Always own shares.

Remember to be honest with yourself about how risk-tolerant you are. When times are good, it's easy to take too many risks with your portfolio, and vice versa. 

#2 Don't Invest In Anything You Don't Understand

Buying shares in a company you don't understand is a bad move. It leads to finding the next Cattles (LSE: CTT) instead of the next Tesco (LSE: TSCO). Do you know what’s lurking in the accounts of companies in the financial services industry? Even now, at vastly reduced valuations, jumping into companies like Royal Bank of Scotland (LSE: RBS) and Aviva (LSE: AV) without truly understanding their complexities and regulatory environments is fraught with danger.

If studying individual companies isn't your thing, there is no shame in buying and holding an index tracking fund. In fact, I believe that's the best strategy for most investors.

Also, don't trust an "expert" just because they use terminology you don't understand. A lot of financial advisor types hide behind nonsensical jargon to inundate, abuse, and enrich (themselves). Ignore them like you would an e-mail entreaty from a Nigerian prince.

If you have no clue what the risk is in the risk-reward balancing act, you're better off putting your money elsewhere. Yeah, it's possible to take an insane risk and make your fortune in a year. It's also possible to win the lottery … but I wouldn't bet my retirement on it. 

#3 Never Buy On Margin

Just don't do it. Using margin (i.e., borrowing money from your broker to buy shares) is a very dangerous game. You are not in control of your own destiny – using margin transfers your financial destiny to the whims of the stock market and of your broker.

Don't Hate … Participate!

Here's a bonus tip: don't procrastinate. It's never too late to start taking control of your financial future … but it's never too early, either.

Start with a little Foolish education by checking out our Ten Steps to Financial Freedom.

Happy, mistake–free, investing.

More on the economy and the markets:

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> Bruce Jackson does not have a beneficial interest in any of the companies mentioned in this article.

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Comments

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bimber 05 May 2009 , 11:45am

Shares are a minimum 7-year investment now are they? And what about a little gold at the base of the asset pyramid?

neilsden 05 May 2009 , 4:21pm

Interesting article. Splendid advice, learning more about things before risking your hard-earned.

But - "truly understanding their complexities and regulatory environments" is kinda difficult where banks (or even bigger companies) are concerned. I'm not sure banks' boards even understand. Witness Barings, Northern Rock, Lloyds, RBS, and others.

Nevertheless the bit about not trusting an "expert" is also very sage. Barge pole time.

Not sure anyone can be "mistake-free" but a bit of personal knowledge is ever so useful. Learn from any mistakes too.

Jbat001 05 May 2009 , 4:36pm

Gold is NOT an asset class.

It only appreciates in the same way that our spiv ponzi scheme housing market did in the lst decade. Any gains are based purely in asset price inflation, not in real growth, so any money you make is only on the back of the last person to buy bidding up the spot price.

In theory, shares prices have no limit to how high they can go, depending on the productivity of the companies they represent. Gold is nothing more than a hedge, either against inflation, currency debasement or civil unrest.

By all means buy it, but don't buy it expecting to make a mint, because that's fundamentally not what it's designed to do. You'll be just jumping on another bandwagon, and when the economy stabilises and gold returns to $600-$700 an ounce and stays there for another twenty years, you'll be wishing you hadn't bought those krugerrands at $1200 an ounce.

There's not even a dividend to help you claw back the losses in such an instance!

rober09 05 May 2009 , 5:23pm

neilsden - I also do not think anyone can be risk free and I would not believe it if they told me they were. After all if WB admits mistakes what hope the rest of us.

Learning from them is more difficult as psychologicaly our inner self very quickly convinces most of us that they were not really mistakes anyway. This is particularly true for those who do not keep accurate and/or upto date records.

jonesjeff 05 May 2009 , 11:08pm

Good advice from Motley Fool.

bimber 06 May 2009 , 11:10am

"Gold is nothing more than a hedge, either against inflation, currency debasement or civil unrest."

I couldn't have put it much better myself. This is exactly the reason it should be at the base of the asset pyramid. The base is not about making a mint, it's about wealth preservation and gold does that better than cash or housing. There may be a time when your house is no use to you and nobody accepts your currency, in which case those krugerrands would have been cheap at any price. Zimbabweans with gold could escape the gangs and the hyperinflation. Even discounting the nightmare scenario, there are times when gold's function as money becomes more recognised and the metal becomes more valuable. That's why central banks keep it (or claim to) and why Brown has taken such flack for selling.

Houstenw 06 May 2009 , 11:32am

"Before trying to figure out if the latest share tip is worthy of your investment dollars".
Is Motley Fool reduced to re-cycling american articles? If so you should remember that we use pounds - as in £ - in the UK!!

supersol42 06 May 2009 , 11:39am

I like unit trust ISAs. The nice thing about unit trusts is that the managers have no interest in them at all, and the trustee only has a valueless legal interest; all the beneficial interest lies with the unit holder. Thus Barings unit trusts survived Barings.

Admittedly, the ISA wrapper isn't as good as it used to be, and many unit trusts have become OEICs. However, there are still some around, and if you drip feed monthly, you get the benefits of pound cost averaging as well as collective investment.

Finally, unlike pensions, you can blow the lot (all but £10K) on consumer goodies on retirement, and still get the Pension Credit!

divitiae 08 May 2009 , 3:07pm

Buying on margin is always a good idea; a business is not going to borrow at a rate above its ROCE so over time taking a position that companies will grow faster than LIBOR will certainly be profitable.

GPLTaylor 20 May 2009 , 11:33am

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