You Don’t Even Need Your RMD Money. These 3 ETFs Turn a Forced Withdrawal Into Money That Keeps Growing

You hit the age where the IRS makes you pull money out of your retirement accounts, and you look at the check and think: I don’t actually need this. The mortgage is paid, and Social Security covers the essentials. But that required minimum distribution is going to land in your taxable brokerage account whether you like it or not, and the question becomes what to do with it. If the goal is to keep that money compounding for your heirs, a charity, or just your own peace of mind, three ETFs deserve a hard look: the SPDR Portfolio S&P 500 ETF (NYSEARCA:SPYM), the Vanguard Morningstar Mega Cap Growth ETF (NYSEARCA:MGK), and the Pacer US Cash Cows 100 ETF (NYSEARCA:COWZ). Each one turns a forced withdrawal into something that keeps working.

SPYM: The Core Holding That Costs Almost Nothing

SPYM tracks the S&P 500, which is about as boring and effective as it gets. The reason it belongs in an RMD-reinvestment bucket starts with the expense ratio: just 0.02%. That means you keep roughly $999.80 of every $1,000 working for you each year, and over a decade of compounding, the gap versus a pricier fund adds up to real money for your heirs.

The fund’s top positions read like a roster of American business at its most dominant. NVIDIA anchors the portfolio at roughly 8% of assets, followed by Microsoft and Apple each near 7%, then Amazon and Meta rounding out the top five. You get broad market exposure with a genuine growth engine baked in. The fund has returned roughly 20% over the past year on a total return basis and has averaged more than 11% annually since inception. It pays a modest quarterly dividend that you can passively auto-reinvest, keeping the compounding engine running without any additional decisions.

MGK: A Growth Tilt for the Long Runway

If SPYM is the anchor, MGK serves as the portfolio’s accelerator. The Vanguard Morningstar Mega Cap Growth ETF (renamed in July 2026 when Vanguard rebranded its index suite following Morningstar’s acquisition of CRSP) concentrates on the largest US growth companies and charges a 0.05% expense ratio. That is still an exceptionally low fee for the concentration of quality it delivers.

Per Vanguard’s June 30, 2026 fact sheet, the top ten holdings alone make up 66.8% of the fund’s total net assets. NVIDIA leads at 13.3%, Apple sits at 12.2%, Alphabet at 10.6%, and Microsoft at 7.5%. Amazon, Broadcom, Meta, Tesla, Eli Lilly, and Advanced Micro Devices round out the top ten. Total net assets stand at roughly $32.2 billion. The fund’s dividend is modest because its holdings plow cash into research and buybacks rather than distributions, but MGK still pays quarterly. If your RMD dollars have a 15- or 20-year horizon because you’re planning to pass them on, MGK gives you the reinvestment vehicle to match that ambition.

COWZ: Cash Flow Discipline as a Ballast

COWZ takes a fundamentally different approach from the other two. It screens the Russell 1000 for the 100 companies with the highest free cash flow yield, weighting them by cash flow rather than market cap. The portfolio turns over quarterly as valuations shift, which means its sector composition looks nothing like the broad market and changes meaningfully over time.

That dynamic rebalancing is worth understanding in concrete terms. The fund’s top holdings as of late July 2026 include Booking Holdings, Bristol-Myers Squibb, General Dynamics, AT&T, and Marathon Petroleum, each near a 2% weight. Technology is now the fund’s largest sector exposure at roughly 24%, followed by healthcare near 20%, consumer cyclical around 14%, and energy around 12%. This is a very different picture from a year or two ago, when energy dominated, and it reflects the methodology doing exactly what it promises: rotating toward businesses generating the most free cash relative to their price. Fund assets sit at roughly $19 billion.

For an RMD reinvestor, the quarterly distributions remain the draw. COWZ has distributed on a quarterly cadence since its December 2016 inception, and the variable payout reflects the actual cash generation of the underlying businesses rather than a fixed commitment. The fund has returned roughly 24% over the past year and has compounded well over the long term. The variability is a feature, not a flaw.

The Real Trade-Off

These three funds are equity funds, which means market risk is part of the deal. If you reinvest a full year’s RMD in August and the market drops 20% in September, that money drops with it. You are trading short-term stability for long-term growth, and that trade only makes sense if you truly do not need the cash and can leave it alone through a bear market. Bond funds or a high-yield savings account will feel calmer in a downturn.

What you get in exchange is real. A near-zero-cost S&P 500 core, a mega-cap growth engine concentrated in the companies driving the next decade of earnings, and a cash-flow-screened ballast that gravitates toward sectors the other two underweight. For a retiree whose RMD is essentially surplus capital, that is a portfolio built to keep compounding long after the withdrawal clears.

Editor’s note: This article has been updated to reflect Vanguard’s July 2026 renaming of MGK to the Vanguard Morningstar Mega Cap Growth ETF, to add MGK’s current top-ten holdings from Vanguard’s June 30, 2026 fact sheet, and to replace COWZ’s stale top positions (QUALCOMM, ConocoPhillips, Altria, CVS Health) with current holdings (Booking Holdings, Bristol-Myers Squibb, General Dynamics, AT&T, Marathon Petroleum) while correcting the fund’s sector characterization, with Technology now the largest exposure at roughly 24% rather than energy.

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