Is Your Portfolio Really Diversified?
Your investments should be spread across a variety of stocks and bonds and cover a range of asset managers, asset classes and geographical locations.
Diversification is simple to understand. In the context of managing your portfolio, it is (simply) about investing in diverse securities so as to lower the risk of the portfolio. Ever since Nobel Prize winner Harry Markowitz wrote his seminal paper "Portfolio Selection" in 1952, finance professionals (and increasingly lay people) have understood that the true risk of an asset is its contribution to the risk of a portfolio.
In a recent survey run by my firm, Insight Financial Strategists, 41% of investors reported that they believe having their net worth in a single mutual fund is sufficient diversification. After all, even the most concentrated mutual fund typically has several dozen stocks. However, many mutual funds diversify within a single asset class in a single country, such as, large-company stocks in the U.S.
Others will concentrate their portfolio on a few securities, sometimes with very unfortunate results. For instance, between September 1, 2015, until November 17, 2015, the Sequoia fund (symbol SEQUX) lost 26.3% of its value largely due to its high concentration in a single stock, Valeant (VRX). Looking at the price evolution of VRX below, and knowing that SEQUX had more than 30% invested in VRX, it is not surprising that the mutual fund tumbled.
From just $107.88 $24.99 for Kiplinger Personal Finance
Become a smarter, better informed investor. Subscribe from just $107.88 $24.99, plus get up to 4 Special Issues
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
In practice, diversification is hard to implement. There are many levels of diversification. Some of them are:
- by individual securities;
- by asset manager;
- by asset class; and
- by geography.
Ideally, an investor will want to diversify so that the various investments are not correlated with one another, have low correlation or even have negative correlation. For instance, according to data from portfolio analytics firm Kwanti, Goldman Sachs (GS) and JP Morgan (JPM) have an 89% correlation based on monthly returns. In other words, buying GS and JPM in the same portfolio only provides a low diversification value.
In another example, JPM and Walmart (WMT) have a negative correlation of -0.14%, based on monthly returns, according to data from Kwanti. I don't know that I would necessarily want to buy either JPM or WMT. However, this pair provides good diversification from one another.
Most of us end up investing in mutual funds and exchange-traded funds, not in individual securities. The same principle applies there. Having a single large cap mutual fund that tracks Standard & Poor's 500-stock index may not be sufficient diversification.
Sure, the S&P 500 ETF provides more than one security and is, therefore, diversified. But in general, most of the securities within a single asset class will be highly correlated with one another (such as with JPM and GS). With that, you would be protecting yourself against the risk inherent in any given company in the portfolio, but not against risks inherent to the asset class or other factors.
Ideally, you would want to be diversified across asset classes, across regions of the world and across asset managers. The following jelly bean chart from Schwab demonstrates the benefits of a wide diversification program: the ranking of the assets by performance changes seemingly randomly from year to year. A fully diversified portfolio is intended to avoid the peaks and valleys of individuals asset classes while providing a more middle-of-the-road return experience.
Is your portfolio diversified? A detailed analysis from a fee-only Certified Financial Planner can give you the full scoop on your portfolio and provide suggestions to mitigate the risks that you are exposed to. Like any other sound advice, apply it now, not later.
Chris Chen CFP® CDFA is the founder of Insight Financial Strategists LLC, a fee-only investment advisory firm in Waltham, MA. He specializes in retirement planning and divorce financial planning for professionals and business owners.
-
The Top 10 Side Gigs For Retirees In 2026Money is freedom in retirement; here’s how to earn more of it with a profitable side gig
-
3 Retirement Changes to Watch in 2026: Tax EditionRetirement Taxes Between the Social Security "senior bonus" phaseout and changes to Roth tax rules, your 2026 retirement plan may need an update. Here's what to know.
-
The 'Yes, And...' Rule for RetirementRetirement rarely follows the script. That’s why the best retirees learn to improvise.
-
What Not to Do After Inheriting Wealth: 4 Mistakes That Could Cost You EverythingGen X and Millennials are expected to receive trillions of dollars in inheritance. Unless it's managed properly, the money could slip through their fingers.
-
'The Money Prism' Solves Retirement Money's Biggest Headache: Here's HowThis simple, three-zone system (Blue for bills, Green for paycheck, Red for growth) helps you organize your retirement savings by purpose and time.
-
No, AI Can't Plan Your Retirement: This (Human) Investment Adviser Explains WhyAI has infinite uses. But creating an accurate retirement strategy based on your unique goals is one place where its possibilities seem lacking.
-
Don't Let a 60/40 Portfolio Derail Your Retirement: Why a Cookie-Cutter Approach Could Cost YouChoosing a personalized retirement investment plan, rather than relying on the 60/40 portfolio, could help protect your savings and ensure long-term growth.
-
Are You Winging Your Retirement Plan? A Wealth Adviser's Tips to Help Build Wealth and Navigate RiskIf you have no strategy tying together your accounts or haven't modeled scenarios to make sure your savings will last, then your plan is probably inefficient.
-
Divide and Conquer: Your Annual Financial Plan Made Easy, Courtesy of a Financial AdviserOverwhelmed by your financial to-do list? Split it into four quarters and assign each one goals that connect to the time of year. It could be life-changing.
-
High-Income But Low Confidence? This 5-Point Plan From a Financial Planner Can Fix ThatHigh earners can still feel they're on shaky ground financially. Rebuild your confidence with a plan that understands your present and protects your future.
-
Your Post-Accident Survival Guide, From an Insurance ExpertAfter a car accident, stay calm and document everything to preserve the facts. Remember: You don't have to solve the problem — that's why you have insurance.
