ARK Invest, led by Cathie Wood, added a combined 267,582 shares of Alphabet (NASDAQ: GOOGL) Class A and Class C stock on June 3, 2026, marking the firm’s largest single-day purchase.

The buying was spread across four exchange-traded funds: the ARK Innovation ETF, ARK Autonomous Technology & Robotics ETF, ARK Next Generation Internet ETF, and ARK Space Exploration & Innovation ETF.

The move signals that Wood remains committed to large-cap technology exposure, particularly in companies tied to artificial intelligence infrastructure and digital advertising platforms.

Alphabet’s purchase comes shortly after the tech giant secured a $10 billion investment agreement with Berkshire Hathaway, a deal that has drawn significant attention from institutional investors.

Investors have increasingly focused on Alphabet’s core businesses in artificial intelligence, cloud computing, and digital advertising, all of which are expected to drive revenue growth through 2026 and beyond.

Alphabet has outlined capital spending plans of $180 billion to $190 billion for 2026, with expenditure in 2027 projected to climb even higher as the company deepens its AI and infrastructure investments.

The scale of that spending underscores Alphabet’s ambition to remain a dominant force in cloud services and AI development at a time when competition across the sector is intensifying rapidly.

Beyond Alphabet, ARK also added 30,273 shares of Alibaba Group and 5,608 shares of Meta Platforms through the ARK Innovation ETF, broadening its exposure across global technology and social media sectors.

On the sell side, ARK trimmed its position in Advanced Micro Devices by 74,838 shares, suggesting a tactical reallocation of capital within the fund’s technology holdings.

The portfolio activity reflects ARK’s continued emphasis on long-term structural growth themes, with AI infrastructure and digital platforms remaining central pillars of the firm’s investment strategy heading into the second half of 2026.