Cathie Wood's Ark Invest Grew Its Portfolio to $15.4 Billion Last Quarter, With Tesla, AMD, and a New SpaceX Stake Making Up About 18% of ARKK Assets. Is Her Concentrated Bet Paying Off?

Source Motley_fool

Key Points

  • Based on the latest quarterly SEC filings, Cathie Wood’s Ark Invest firm is managing a total of $15.4 billion of assets.

  • About 18% of Cathie Wood's flagship Ark Innovation ETF (ARKK) is invested in just three tech majors.

  • The Ark Innovation ETF (ARKK) has lost about 4% per year for the past five years.

  • Motley Fool Issues Rare "Total Conviction" Buy Alert ›

Cathie Wood is one of America's most-watched tech investors, known for her extreme bullishness on Bitcoin and disruptive future technologies like robotics and artificial intelligence (AI). According to her company's most recent 13F SEC filing, as of the second quarter, Cathie Wood's Ark Invest portfolio had a total of $15.4 billion of assets under management.

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But what do you get when you invest with Wood? Her firm's flagship exchange-traded fund (ETF), the Ark Innovation ETF (NYSEMKT: ARKK), is making some rather top-heavy bets on just a few tech companies. As of Oct. 19, a significant weighting of the ARKK fund's total assets was invested in just these three stocks: Advanced Micro Devices (NASDAQ: AMD), Space Exploration Technologies (NASDAQ: SPCX), and Tesla (NASDAQ: TSLA).

Let's look at how much Cathie Wood's ARKK fund is investing in AMD, SPCX, and TSLA -- and whether this well-known tech ETF is likely to pay off for long-term investors.

Cathie Wood, CEO of Ark Investment Management.

Ark Investment Management CEO Cathie Wood. Image source: Getty Images.

ARKK: High concentration in AMD, SPCX, and TSLA

According to the Ark Innovation ETF top holdings as of Oct. 19, here's how much ARKK has invested in these three tech stocks:

Stock

Market Value ($) of ARKK Invest's Holdings

Weight (%) of ARKK

Advanced Micro Devices

$109,296,855

1.75%

SpaceX

$401,101,769

6.42%

Tesla

$608,185,176 9.74%

Total

$1.12 billion

17.9%

Data source: Ark Invest

About 1.75% of the ARKK fund assets are in Advanced Micro Devices, a semiconductor stock that is helping to power the AI data center boom. Another roughly 6.4% is in SpaceX, and an even larger 9.7% is invested in Tesla -- a total of 16.2% of this tech ETF's funds are in Elon Musk's companies. Add in AMD, and you have about 18% of ARKK's total weighting.

How ARKK compares to the best tech ETFs

If you agree with Wood's investing approach, and you're optimistic about AI data centers and Musk's leadership in rocket technologies, electric vehicles, and the future of self-driving cars and robotics, then putting 18% of your money into those three stocks might seem like a good bet. Making concentrated investments can be a worthwhile strategy for delivering outsize gains.

But history shows that Wood's ARKK doesn't always beat the market and can sometimes be disappointing for investors. The Ark Innovation ETF has delivered annualized returns of about 14.3% since its inception in October 2014.

But that return has failed to outperform the S&P 500 after accounting for the actively managed ARKK fund's expense ratio of 0.75%. And ARKK has lost money for the past five years, with negative annualized returns of -4.06%.

ARKK had a great run of performance for a few years leading up to its all-time high in February 2021. But since then, this fund has failed to keep pace with the best tech ETFs.

What to buy instead of ARKK? Try the Vanguard Information Technology ETF (VGT)

If you feel like Wood's investment approach is overly optimistic about unproven technologies, or you don't want to make such a highly concentrated bet on one volatile semiconductor stock and Musk, the Vanguard Information Technology ETF (NYSEMKT: VGT) might be a better buy for long-term investors. This low-cost index fund has delivered average annual returns of 20.9% for the past five years, far better than ARKK.

The VGT fund's portfolio includes 318 tech stocks. Advanced Micro Devices is one of the top 10 stock holdings in VGT, at 3.67% of the fund's assets. VGT does not hold Tesla or SpaceX stock because those companies are in sectors that VGT excludes under its benchmark's definition of "technology" companies. And VGT charges an expense ratio of only 0.09%.

Should you buy stock in Ark ETF Trust - Ark Innovation ETF right now?

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*Stock Advisor returns as of October 21, 2026.

Ben Gran has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Advanced Micro Devices, Bitcoin, and Tesla. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
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