On Wednesday, May 27, Cathie Wood-led Ark Invest made significant trades, acquiring shares in Amazon, Tempus AI, and Cerebras Systems.

The Amazon.com Trade

Ark Invest’s flagship ETF, ARK Innovation ETF, purchased 24,186 shares of Amazon on Wednesday. With a closing price of $271.85, this acquisition is valued at approximately $6.6 million.

Amazon was identified by HB Wealth strategist Gina Martin Adams as one of the clear "winners" among the Magnificent 7, as investors increasingly favored companies showing strong returns on their AI spending. She said Wall Street had shifted focus toward firms like Amazon that could translate heavy capital expenditures into sustainable bottom-line growth.

The Tempus AI Trade

In another notable move, ARK Genomic Revolution ETF, acquired 25,910 shares of Tempus AI, amounting to an investment of about $1.2 million, given the stock’s closing price of $47.17.

Tempus AI, a company backed by both Cathie Wood and Nancy Pelosi, was recently in the news following its first-quarter financial results. Tempus AI reported first-quarter revenue of $348.12 million, up 36.1% year-over-year and slightly above analyst expectations. Diagnostics revenue increased 34.7% to $261.1 million, while Data and Applications revenue rose 40.5% to $87 million, supported by continued growth in AI-driven healthcare and oncology services.

The company reported a quarterly loss of 13 cents per share, narrower than expected, and ended the quarter with $643.8 million in cash and cash equivalents. Tempus also raised its full-year 2026 revenue outlook to $1.59 billion to $1.60 billion and projected adjusted EBITDA of approximately $65 million as demand for its AI-powered diagnostics platform continued to expand.

The Cerebras Trade

Ark Invest also increased its stake in Cerebras Systems through both the ARKK and ARK Next Generation Internet ETF, purchasing a total of 817 shares. With a closing price of $266.90, the total investment in Cerebras is valued at approximately $218,057.

Cerebras, an AI chip upstart, has been gaining attention for its innovative technology, which has prompted Ark to continue its investment despite market fluctuations. The company is seen as a significant player in the AI chip industry.

Last Friday, Ark bought $10.8 million worth of Cerebras shares and followed that up with another $8.5 million purchase on Tuesday.

Other Key Trades:

• Kratos Defense and Security Solutions: Ark’s ARKX ETF bought 9,305 shares