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Cathie Wood Adds Archer Aviation, Robinhood, and Cerebras to Ark Invest Portfolio Amid Septembers Volatile Market
Despite September’s reputation as a hard month for equity investors, Ark Invest’s founder and chief investment officer Cathie Wood continued to add positions during the shortened holiday trading week. On Tuesday, Ark Invest increased its stake in three companies: Archer Aviation (NYSE: ACHR), Robinhood Markets (NASDAQ: HOOD), and Cerebras Systems (NASDAQ: CBRS). All three stocks were trading below recent highs—Archer 60%, Robinhood 48%, and Cerebras 24%—yet Wood viewed them as attractive buying opportunities.
Archer Aviation is a pre‑revenue aerospace firm that develops electric vertical take‑off and landing (eVTOL) aircraft for urban air taxi and defense applications. The company’s trailing‑12‑month revenue is $6.9 million, while its market capitalization stands at $4.5 billion. According to the company’s filings, Archer’s flagship Midnight aircraft has a projected range of up to 100 miles and a top speed of 150 mph. Archer has secured partnerships with United Airlines, which has conditionally ordered 200 aircraft, and has a contract to serve as the official air‑taxi provider for the 2028 Los Angeles Olympic Games. The company also announced a type certificate from the FAA for the Midnight platform and a collaboration with Starlink to integrate satellite connectivity.
Robinhood Markets, a U.S.‑based trading platform that offers equities, ETFs, options, futures, and cryptocurrency, reported a share price of $117.34 on September 9, down 3.9% from the previous close. The firm’s analyst consensus target is $121.51, implying a 3.5% upside. Robinhood’s platform hosts more than 27 million funded customers and manages $307 billion in total platform assets. The company has recently expanded its prediction‑market offerings and added new cryptocurrency products.
Cerebras Systems, headquartered in Sunnyvale, California, designs wafer‑scale AI chips and supercomputers for large‑scale deep‑learning workloads. In a recent funding round, Cerebras raised $250 million, bringing its valuation to approximately $4 billion. The company’s WSE‑3 semiconductor measures 215 mm square and is manufactured by TSMC. Cerebras’ customers include the Mohamed bin Zayed University of Artificial Intelligence, G42, OpenAI, and Amazon Web Services.
Ark Invest’s quarterly commentary for Q2 2026 highlighted the firm’s continued focus on disruptive technologies. The investment manager’s flagship ARK Innovation ETF has historically delivered strong returns during periods of technological acceleration, though it has also experienced significant volatility. Wood’s recent purchases align with Ark’s mandate to invest in companies that are poised to benefit from long‑term structural shifts.
The addition of Archer, Robinhood, and Cerebras reflects Ark Invest’s broader strategy of allocating capital to high‑growth, high‑risk sectors. While Archer remains a pre‑revenue business, its partnerships and FAA approvals suggest a potential path to commercial viability. Robinhood’s expanding product suite and large user base position it to capture further market share in the fintech space. Cerebras’ unique wafer‑scale technology offers a differentiated solution for AI inference and training, a market that continues to grow as demand for large‑scale models increases.
Market observers note that September’s trading environment is typically challenging, with increased volatility and lower liquidity. Despite this, Ark Invest’s purchases indicate confidence in the long‑term prospects of these companies. Investors will likely monitor the companies’ quarterly earnings, regulatory approvals, and partnership developments in the coming months. Ark Invest’s holdings in these stocks will be disclosed in the firm’s next quarterly report, scheduled for release in early October.
In summary, Cathie Wood’s recent acquisitions demonstrate Ark Invest’s willingness to invest in emerging technologies even during periods of market uncertainty. The firm’s exposure to Archer Aviation, Robinhood Markets, and Cerebras Systems positions it to benefit from potential upside in the eVTOL, fintech, and AI sectors as they mature.
Archer Aviation is a pre‑revenue aerospace firm that develops electric vertical take‑off and landing (eVTOL) aircraft for urban air taxi and defense applications. The company’s trailing‑12‑month revenue is $6.9 million, while its market capitalization stands at $4.5 billion. According to the company’s filings, Archer’s flagship Midnight aircraft has a projected range of up to 100 miles and a top speed of 150 mph. Archer has secured partnerships with United Airlines, which has conditionally ordered 200 aircraft, and has a contract to serve as the official air‑taxi provider for the 2028 Los Angeles Olympic Games. The company also announced a type certificate from the FAA for the Midnight platform and a collaboration with Starlink to integrate satellite connectivity.
Robinhood Markets, a U.S.‑based trading platform that offers equities, ETFs, options, futures, and cryptocurrency, reported a share price of $117.34 on September 9, down 3.9% from the previous close. The firm’s analyst consensus target is $121.51, implying a 3.5% upside. Robinhood’s platform hosts more than 27 million funded customers and manages $307 billion in total platform assets. The company has recently expanded its prediction‑market offerings and added new cryptocurrency products.
Cerebras Systems, headquartered in Sunnyvale, California, designs wafer‑scale AI chips and supercomputers for large‑scale deep‑learning workloads. In a recent funding round, Cerebras raised $250 million, bringing its valuation to approximately $4 billion. The company’s WSE‑3 semiconductor measures 215 mm square and is manufactured by TSMC. Cerebras’ customers include the Mohamed bin Zayed University of Artificial Intelligence, G42, OpenAI, and Amazon Web Services.
Ark Invest’s quarterly commentary for Q2 2026 highlighted the firm’s continued focus on disruptive technologies. The investment manager’s flagship ARK Innovation ETF has historically delivered strong returns during periods of technological acceleration, though it has also experienced significant volatility. Wood’s recent purchases align with Ark’s mandate to invest in companies that are poised to benefit from long‑term structural shifts.
The addition of Archer, Robinhood, and Cerebras reflects Ark Invest’s broader strategy of allocating capital to high‑growth, high‑risk sectors. While Archer remains a pre‑revenue business, its partnerships and FAA approvals suggest a potential path to commercial viability. Robinhood’s expanding product suite and large user base position it to capture further market share in the fintech space. Cerebras’ unique wafer‑scale technology offers a differentiated solution for AI inference and training, a market that continues to grow as demand for large‑scale models increases.
Market observers note that September’s trading environment is typically challenging, with increased volatility and lower liquidity. Despite this, Ark Invest’s purchases indicate confidence in the long‑term prospects of these companies. Investors will likely monitor the companies’ quarterly earnings, regulatory approvals, and partnership developments in the coming months. Ark Invest’s holdings in these stocks will be disclosed in the firm’s next quarterly report, scheduled for release in early October.
In summary, Cathie Wood’s recent acquisitions demonstrate Ark Invest’s willingness to invest in emerging technologies even during periods of market uncertainty. The firm’s exposure to Archer Aviation, Robinhood Markets, and Cerebras Systems positions it to benefit from potential upside in the eVTOL, fintech, and AI sectors as they mature.
