ARK Investment Management CEO Cathie Wood made a significant move on July 28, purchasing nearly $40 million in shares across three high-profile names as their stock prices fell.
Wood’s firm acquired stakes in Nvidia (NASDAQ: NVDA), Tesla (NASDAQ: TSLA), and Space Exploration Technologies (NASDAQ: SPCX), all during a period of broader market weakness tied to AI sentiment.
ARK’s investment philosophy centers on buying into companies leading transformative industries, including artificial intelligence, electric vehicles, and space travel.
Of the three purchases, Nvidia presents the most straightforward investment case, backed by explosive revenue growth driven by its dominance in the GPU market.
In the first quarter of its fiscal year 2027, ended April 2026, Nvidia reported revenue of $81.6 billion, up 85% year over year, with adjusted earnings per share of $1.87, up 140% from the prior-year period.
Management has projected approximately $91 billion in revenue at the midpoint for the upcoming second quarter, representing a year-over-year increase of nearly 95%.
The stock trades at 25.5x forward earnings compared to an average of 22.1x for information technology stocks, but Nvidia’s growth trajectory makes that premium appear reasonable.
Tesla’s investment case is considerably more complicated, with second quarter revenue rising 26% year over year to $28.2 billion, while adjusted earnings per share dropped 18% year over year to $0.33.
The electric vehicle maker’s stock trades at a steep 169.5x forward earnings, a valuation that leans heavily on the success of Tesla’s robotaxi ambitions, which remain uncertain.
Tesla’s deliveries beat expectations during the quarter, though the boost was partly attributed to geopolitical tensions affecting oil prices, a dynamic that may not serve as a reliable long-term growth driver.
SpaceX is the most speculative of the three, posting second quarter revenue of $7.8 billion, up 92% year over year, while recording a net loss of $541 million, down from a $1 billion loss in the prior-year quarter.
Despite the improvement, SpaceX remains unprofitable and carries a valuation of $1.8 trillion, trading at a price-to-sales ratio of 61.5, which raises serious questions about whether current prices are justified.
The company’s long-term vision includes making space tourism commonplace, building a major AI business, and developing a telecom segment capable of rivaling industry leaders, but significant uncertainty clouds each of those ambitions.
For investors assessing ARK’s dip-buying strategy, Nvidia looks like the clear winner of the three, while SpaceX appears richly valued and Tesla carries elevated risk suited only to investors comfortable with substantial volatility.
