Cathie Wood buys about $100M in Nvidia and SpaceX shares

Cathie Wood went shopping again. Her firm, ARK Invest, bought about $100 million worth of Nvidia and SpaceX shares in a single day.

The purchase lands on two of the most closely watched names in tech. One sells the chips behind the AI boom. The other launches rockets and now trades publicly.

The trades behind the headline number

The SpaceX side of ARK’s recent buying has a clear trigger. On November 4, 2026, ARK picked up 348,406 SpaceX shares worth approximately $47.4 million, according to the research findings.

Those shares were spread across three of ARK’s exchange-traded funds: ARKK, ARKQ, and ARKW.

The timing was not random. SpaceX stock fell by about 3.8% after the US midterm elections, which handed Democrats control of Congress.

ARK treated that slide as a discount. Buying when a stock drops on political news, rather than on anything the company itself did, is a familiar move in Wood’s playbook.

The Nvidia buying has a longer paper trail. On September 29, 2026, ARK bought 356,681 Nvidia shares for around $81.6 million. That stands as the firm’s largest single-name purchase in the period covered by the research.

On that same September trading day, ARK also added roughly $1.3 million in SpaceX shares.

A relationship with plenty of back and forth

None of this means ARK has been a one-way buyer of SpaceX. The firm traded in and out of the stock throughout 2026, including sales in October.

SpaceX itself has become a bigger AI story than many expected from a rocket company. According to the research findings, it has partnerships with Nvidia and is pushing into AI infrastructure, including exclusive use of Nvidia’s Vera Rubin platform.

SpaceX’s move into public markets under the SPCX ticker also changes the game for funds like ARK. A company that once sat out of reach for most investors can now be bought, sold, and rebalanced like any other listed stock.

What ARK’s buying signals for investors

The midterm reaction is a good example of that risk. SpaceX’s 3.8% drop shows how quickly political shifts can move a stock tied to government contracts, regulation, and policy.

For Nvidia, the September purchase suggests ARK sees the AI hardware story as far from finished. The firm committed more money to that single trade than to any other name in the period.

There is also a ripple effect to consider. ARK’s ETFs are popular, and their trades often draw commentary and can influence market movements.

What to watch next is fairly simple. Track whether ARK keeps adding to SpaceX if political volatility continues, or whether it trims again, as it did in October.

Watch Nvidia, too, and whether ARK tops its $81.6 million September order. Also keep an eye on how the SpaceX and Nvidia relationship develops around the Vera Rubin platform, since it ties the two halves of ARK’s bet together.