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Mark Cuban Says He Keeps a Big Part of His Portfolio in One Surprising Place - Here’s Why

Why this billionaire's "cash cushion" approach may fit life after 50.

By Tobi Amure, CFEI®

Edited by Lisa Dammeyer

Updated March 9, 2026

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You've probably heard that letting cash "sit" in your portfolio is a mistake and that you should start investing every dollar as aggressively as possible. Yet billionaire investor Mark Cuban has openly said he keeps a large portion of his portfolio in cash. This is notable because many personal finance podcasts, blogs, and experts advise against this.

So, why does Cuban keep so much cash? Let's take a closer look at this case to find out.

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The surprising part of Mark Cuban's portfolio

Mark Cuban has said that he holds a significant portion of his portfolio as cash rather than invested in securities, funds, or other assets. To a tech billionaire who also owns the Dallas Mavericks, it may appear almost dull to pick cash.

Yet, Cuban perceives cash as a position — not as dead weight — in his portfolio. It is a means for him to be patient and picky rather than under pressure to buy into an investment simply because others are.

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Why does Cuban keep cash?

When asked why he holds cash when he does not see investments worth pursuing, Cuban has stated that he waits for the numbers to make sense to him. He does not like to gamble or invest his money in trends that he does not fully comprehend or in markets he believes are overvalued.

He is also concerned about abrupt market shocks, such as falling high-flying stocks or major political and economic surprises. During such times, he prefers to keep his money in safe places. Cash is not an irreversible escape from investing but a means by which Cuban avoids losses he considers unnecessary.

Other benefits of having cash in your portfolio

In addition to Cuban's personal philosophy, extra cash can provide some practical benefits for everyday investors. Here are some reasons why an intelligent cash cushion can serve as a vital part of your portfolio or retirement plan.

Cash gives you the flexibility to pounce on opportunities

Having a cash reserve can help you quickly invest in good opportunities without having to panic-sell another asset. Cash also allows you to purchase stocks or real estate, or any other asset, when it goes "on sale" without incurring additional risk or debt.

Cash can be used by regular investors on a small scale. In case the market is low or a good investment becomes cheaper, you will have the money available to dive in.

It can help you ride out market volatility

One reason Cuban has given for why he would rather hold a portion of his wealth in cash is sharp market volatility, including massive, unexplainable declines in large tech stocks. His cash is inoculated against that turbulence of the day when markets are jumpy.

For retirees, a little cash in hand could make your total portfolio go down during a crisis, which is particularly valuable after you are drawing income. A 10% to 20% cash allocation could dampen fluctuations and also be an emotionally easier way to stick to your long-term plan.

Cash can prevent forced sales at bad times

Without sufficient liquid savings, you might need to sell investments during a downturn in the market simply to pay medical bills, cover repairs, or account for day-to-day costs. That may create losses that would have been avoided with a cash buffer.

A dedicated cash position, whether in a high-yield savings account, short-term CDs, or a money market fund, could provide you with some breathing room in case life throws a curveball at you. This particularly comes in handy when you are in retirement and living on a fixed or semi-fixed income.

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Emergency funds and short‑term needs depend on cash

Most experts suggest having three to six months' worth of expenses in an emergency fund. For retirees who no longer receive a paycheck, that number could even be a little higher.

Cuban's emphasis on keeping cash on hand is consistent with this concept of insuring yourself against unemployment, medical problems, or unforeseen expenses.

Cash can boost your financial peace of mind

Most investors don't realize the extent to which emotional comfort can be achieved simply by having a good cash cushion. The fact that you have money saved to pay bills, cover unexpected costs, or invest in new opportunities can help you to be able to stick with your long-term plan when the market pulls back.

Financial planners observe that the cash position tends to lower the risk of panic-selling when the headlines look frightening. To most individuals who are above the age of 50, psychological stability is more significant than the figures on a statement.

Bottom line

Mark Cuban's choice to keep much of his portfolio in cash shows that even aggressive investors sometimes prioritize safety and flexibility over squeezing out every last bit of return. With this insight, you can do a quick checkup on your own financial fitness. Look at how much cash you have relative to your monthly expenses, your risk tolerance, and how close you are to drawing down your retirement accounts.

If you're worried you're either sitting on too much cash or not nearly enough, that's a clear sign to talk with a fiduciary financial advisor about where you stand financially and whether a "Cuban-style" cash buffer belongs in your plan.

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