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Six Types of Diversification to Include in Your Portfolio

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“Diversify across securities, across asset classes, across markets – and across time.” – Charley Ellis 

It’s been said that true diversification means always hating some of your investments. As a result, you never hate your portfolio. 

Most people are familiar with the concept of diversification, which can be broadly described as “not putting all your eggs in one basket.” And most people know that it’s a good thing to have a diversified portfolio. But how does one build a diversified portfolio? There is more than one way to diversify after all.

Here are six forms of diversification that you should include in your portfolio. 

#1. Individual Company Diversification

It’s easier now than ever before to get a diversified allocation to stocks through a bevy of different index funds. This wasn’t always the case. In the 50’s, Nobel laureate Harry Markowitz demonstrated a portfolio’s risk dropped considerably as additional stocks were added to the portfolio—even if the individual stocks were all of equal risk. More recently, research by Longboard Asset Management revealed that over the period from 1983-2006 nearly 2 in 5 stocks actually lost money (39%), almost 1 in 5 lost at least 75% of their value (18.5%) and 2 in 3 underperformed the Russell 3000 index. Furthermore, the best 25% of all stocks over this period accounted for nearly all the gains.


Source: Longboard Asset Management 

#2. Industry Diversification

Just like getting a mix of individual companies is an important way to diversify your portfolio, having a balance across the multiple different industries in the economy is important too. It’s especially important to remember to diversify away from the industry with which you are most familiar. For example, just like with the home country bias, people also tend to overweight their home industry. The chart shows in those living in the West tend to overweight Technology, as many are familiar with the tech companies based here or are directly working in the industry. The Northeast favors Financials, the Midwest Industrials, and the South, Energy. 

The point is, just like with individual company stocks, it’s not healthy to overweight an industry that you are also counting on for your paycheck or regional economic health.


Source: JP Morgan Guide to the Markets December 31, 2015

#3. Asset Class Diversification

Different assets (Stocks, Bonds, Cash, Real Estate, Commodities) are going to perform differently in various economic environments. For example, during an economic recovery stocks will likely perform well while in a recession bonds provide protection. Commodities, TIPS or cash, can protect against the forces of inflation while during a deflationary environment long-term bonds are often the best investment. 


#4. Strategy Diversification

Within asset classes there are different strategies to get the exposure—many of these different strategies (also called factors, risk factors, smart beta, etc.) have been shown in the academic research to deliver superior returns over time versus a market-cap weighted index. But, this outperformance doesn't happen every year, and there can be long periods of underperformance. For most, the best approach is a mix of these factors (Value, Small-cap, Momentum, High Quality, etc.) with the realization that you won't have 100% allocated to the hot strategy, but that you also won't be 100% committed to a strategy that's lagging. 

#5. Geographic Diversification 

Again, most investors have a "home country bias" preferring the stocks of companies based in their home country. However, the research also shows a benefit to diversifying internationally. For an example, think about the performance of the Japanese stock market since it’s 1989 peak. As author Jonathan Clements wrote last month:

What if the U.S. turns out to be the next Japan? It strikes me as improbable. But in the late 1980s, when Japan’s economy was the envy of the world, the subsequent bear market would also have been considered wildly improbable.

My contention: If you’re going to invest heavily in stocks, you should consider allocating as much as 40% to foreign shares, so you aren’t betting too heavily on a single country’s stock market. I don’t know whether that will help or hurt returns. But it will reduce risk—and potentially save you from financial disaster. 


Just like with asset classes or strategies no one economic region is going to consistently outperform. Best to have a mix. 

#6. Time Diversification

Also called Dollar-Cost averaging, if you’re still contributing to your investment accounts, it can reduce the impact of poor investment behavior (a lack of discipline) or unlucky timing. While the research shows that around 70% of the time investing a lump sum is better than investing it over time, dollar-cost averaging or any rules-based, disciplined approach, can lead to better investor behavior and therefore better investment results. As author Ben Carlson wrote, “Dollar cost averaging takes the responsibility of poor timing decisions out of your hands. It’s not the perfect solution, but it helps you move from short-term guessing to long-term planning.” 

So, there you have it—six ways to diversify your portfolio. What do you think? Is your portfolio fully diversified?


Click here for disclosures regarding information contained in blog postings.
Cordant, Inc. is not affiliated or associated with, or endorsed by, Intel.

Published on June 14, 2016

Isaac Presley, CFA

Isaac Presley, CFA

Isaac Presley is the President and Director of Investments for Cordant, a wealth management firm serving current and former Intel employees. To learn more, you can read Isaac's full bio.

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