Cathie Wood's ARK Invest bought about $100 million worth of Nvidia and SpaceX shares in a single day, adding to its positions in two of the most closely watched names in technology.
The purchases span two companies central to the AI and space sectors: Nvidia, which sells the chips behind the AI boom, and SpaceX, which launches rockets and now trades publicly.
SpaceX purchase follows post-election dip
On November 4, 2026, ARK picked up 348,406 SpaceX shares worth approximately $47.4 million, according to research findings. The shares were spread across three ARK exchange-traded funds: ARKK, ARKQ, and ARKW.
The timing followed a roughly 3.8% decline in SpaceX stock after the US midterm elections, which handed Democrats control of Congress. ARK treated the political-driven slide as a buying opportunity, a familiar move in Wood's playbook.
Nvidia buy marks largest single-name purchase
On September 29, 2026, ARK bought 356,681 Nvidia shares for around $81.6 million, the firm's largest single-name purchase in the period covered by the research. On that same trading day, ARK also added roughly $1.3 million in SpaceX shares.
ARK has not been a one-way buyer of SpaceX. The firm traded in and out of the stock throughout 2026, including sales in October.
SpaceX deepens AI ties
SpaceX 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 to watch
The midterm reaction illustrates the 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, committing more money to that single trade than to any other name in the period.
Investors will be watching whether ARK keeps adding to SpaceX if political volatility continues, or whether it trims again as it did in October. They will also watch whether ARK tops its $81.6 million September Nvidia order, and how the SpaceX-Nvidia relationship develops around the Vera Rubin platform, which ties the two halves of ARK's bet together.
