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ARK Doubles Down on Guardant Health, AeroVironment; Trims Iridium and Alphabet

Cathie Wood's funds continued a pattern of rotating into healthcare and defense names while trimming positions in communications and big tech over the trading session.

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Priya Anand · Equities & Earnings Desk · 18 Sept 2026 · 23:52 · 1 min read
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ARK Doubles Down on Guardant Health, AeroVironment; Trims Iridium and Alphabet

Cathie Wood's ARK Invest expanded its stakes in Guardant Health and AeroVironment on Tuesday, while reducing holdings in Iridium Communications, Teledyne Technologies and Alphabet, according to daily trade filings.

Through the ARK Genomic Revolution ETF (ARKG), the firm acquired 9,070 shares of Guardant Health (NASDAQ:GH), worth approximately $1.52 million. The purchase marks a second consecutive week of buying, following an acquisition of 39,558 shares the prior week. ARK also bought 9,037 shares of AeroVironment (NASDAQ:AVAV) through its ARK Space Exploration & Innovation ETF (ARKX), totaling $1.39 million, after purchasing 29,016 shares the day before.

On the selling side, ARK disposed of 25,964 shares of Iridium Communications (NASDAQ:IRDM) via ARKX, valued at roughly $1.2 million, continuing a liquidation initiated with a sale of 54,500 shares on Monday. The fund also sold 313 shares of Teledyne Technologies (NYSE:TDY) through ARKQ, worth $186,895, extending a stream of divestments that began with 5,181 shares sold the previous day.

Additionally, ARK offloaded 294 shares of Alphabet (NASDAQ:GOOGL) across its ARK Innovation ETF (ARKK) and ARK Web 3.0 ETF (ARKW), realizing $102,720, adding to positions trimmed earlier in the week.

ARK's ProPicks AI model has highlighted several former holdings as past performers, including Super Micro Computer, up 185%, and AppLovin, up 157%.

This article was produced with AI assistance and edited by a Finance Review Daily journalist.
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Written by
Priya Anand
Equities & Earnings Desk

Priya covers listed equities and corporate earnings, reading quarterly results and guidance for what they signal about sector health and forward valuations.

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ARK Buys Guardant Health, AeroVironment; Sells Iridium and Alphabet · Finance Review Daily