A fantastic investment weapon for private investors

Ed Bowsher explains the 'secret weapon' that could help private investors generate excellent market-beating returns.


Time arbitrage can help you beat the market

I came across a great piece of investment jargon last week.

Now, that's a pretty rare event for me. I think a lot of jargon just ends up confusing people and doesn't help anyone.

But this latest piece of jargon highlights a crucial advantage that private investors have. And this advantage means there's no reason why private investors can't generate excellent market-beating returns over the long-term.

What is the jargon?

So what's this piece of jargon I like so much?

It's time arbitrage'.

You've probably heard of arbitrage before. It normally refers to a situation where an asset has different prices in two different markets. So if a company is listed in Paris and New York, and the share price is slightly lower in Paris, an investor can quickly buy in Paris and sell immediately for a higher price in New York. The investor is exploiting a price difference between two markets.

Time arbitrage is a bit different. It's exploiting a difference between the buyer and seller in a transaction their time horizons'.

Many professional investors operate on very short time horizons. In other words, they only anticipate keeping their investments for months, weeks, days or even seconds, in some cases. So in the super-short term, you have the high frequency traders' who use computer algorithms to spot fleeting opportunities. There's no way a private investor armed with a desktop can compete with these guys. Or at least, not if your time horizon is very short.

Your average fund manager isn't a high frequency trader. However, most fund managers' time horizons are too short in my view. That's because most managers are judged on their performance every three or six months. So if a company hits short-term problems, it's hard for your average fund manager to stay invested. Even if a manager is confident that the underlying prospects for the company are fine, the pressure to sell and cut his losses is very strong.

Use time arbitrage to your advantage

The good news is that private investors don't have to worry about any of this. If the value of my portfolio falls over the next year, no one but me is even going to know about it. And if that happens, I'll stay calm because I know I'm playing this game for the long-term.

So if I'm buying a share from a high-frequency trader, I'm exploiting a difference in our respective time horizons. I'm investing for the next 20 years; his horizon is seconds or minutes.

And if I buy a share from a professional fund manager, once again I'm almost certainly investing over a longer horizon than he is regardless of the marketing bilge you'll hear from the fund management company concerned.

As Morgan Housel writes on The Motley Fool:"There's something every mom-and-pop investor can do to gain an edge on the person on the other side of the trade: be willing to wait longer There are few things more powerful in investing than the realisation that the biggest gains tend to accrue to the person who waits the longest."

So if a company says that something has gone wrong, we don't need to panic. One recent example of this is GlaxoSmithKline (LSE: GSK). I've owned shares in this drugs giant for several years, so I wasn't best pleased when the company warned last month that its new respiratory drugs weren't doing as well as hoped. But I didn't stay irritated for too long, because I knew that this profit warning would probably be forgotten by just about everyone in five years' time.

Glaxo will recover, its share price will recover, and I'll continue to receive a great dividend while I wait for that recovery. In fact, I think now is a great time to buy into Glaxo while the shares are relatively cheap.

The other big attraction of time arbitrage is that it reduces the risk of investing in the stock market. Yes, the stock market is risky and volatile. But when you look at stock market history, it's clear that the longer-term trend is up. If you stay invested for ten years or longer, you'll almost certainly experience some sizeable ups and downs, but overall there's a strong chance that you'll make a profit.

And you don't even need to buy individual shares to benefit from this long-term growth. The simplest approach is just to invest in some low-cost index tracker funds that match the performance of a stock market index. So if the FTSE 100 index goes up by 20%, a FTSE 100 tracker fund should go up by roughly 20% too.

Even better, the charges for many index tracker funds are now extremely low. You can read about my favourite index tracker funds in my recent article: A guide to the all-new Nisa. (If you're not a MoneyWeek subscriber, sign up for a four-week free trialand you can read the article in our web archive.)

But whether you go for individual shares or index trackers, remember that time is the investor's best friend.

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