<div id="readability-page-1"><p>Cathie Wood's ARK Invest ETFs (exchange-traded funds) made a new shift in the portfolio on Monday, March 30, 2026, cutting exposure to semiconductor testing firm, <strong>Teradyne (TER), </strong>while adding to AI infrastructure company <strong>CoreWeave</strong> (CRWV) and nuclear energy firm <strong>Oklo</strong> (OKLO).</p><h3>End of Quarter Sale - 50% Off TipRanks</h3>New trading tool for CRWV bulls/bears <h2><strong>What Did Wood Sell on March 30?</strong></h2> <p>The most eye-popping move of the day was ARK's massive exit from Teradyne. Wood offloaded 29,130 shares, pocketing roughly $8.6 million. </p> <p>This continues a recent trend of reducing her position in the chip equipment company as the semiconductor testing market matures. The stock reflected this slowing momentum, closing 7% lower on Monday.</p> <h2><strong>Wood Buys the Dip in CRWV and OKLO</strong></h2> <p>While Teradyne was a clear exit, Wood used a sharp sell-off in CoreWeave as a golden entry point. She poured over $3.1 million into the AI-focused cloud provider just as CRWV stock tumbled nearly 8%.</p> <p id="p-rc_6c0404ae7196dcf1-41">The slide was triggered by news that CoreWeave's CEO, Michael Intrator, recently sold over $7.2 million worth of company stock. While the &#34;insider selling&#34; headline spooked retail investors, Wood viewed the dip as a great opportunity.</p> <p>ARK also bought 37,422 shares of Oklo, worth about $1.8 million, buying the dip after the stock fell about 9% on Monday. The move shows Wood's growing focus on nuclear energy, as data centers need large amounts of clean power, with Oklo's small modular reactors seen as a long-term solution.</p> <p>In healthcare, the firm bought 20,674 shares of GeneDx (WGS) for around $1.18 million, showing continued interest in genomics and precision medicine.</p> <h2><strong>How Wall Street Views These Stocks</strong>  </h2> <p>Let's see how these stocks perform using the TipRanks Stock Comparison Tool.</p></div>

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<p>Cathie Wood's ARK Invest made significant portfolio changes on March 30, 2026, selling 29,130 shares of Teradyne (TER) for approximately $8.6 million, reflecting a trend of reducing exposure to the semiconductor sector. Conversely, she invested over $3.1 million in CoreWeave (CRWV) after its stock dropped nearly 8% due to insider selling, and purchased 37,422 shares of Oklo (OKLO) for about $1.8 million, capitalizing on a 9% decline. Additionally, ARK acquired 20,674 shares of GeneDx (WGS) for around $1.18 million, indicating ongoing interest in genomics.</p>

Tip Ranks

ALPS Medical Breakthrough

iShares Biotechnology ETF

VanEck Semiconductor ETF

Defiance Daily Target 2X Long OKLO ETF

Direxion S&P Biotech Bull 3X

SPDR S&P Biotech

Oklo

Tradr 2X Long CRWV Daily ETF

Teradyne

First Trust NYSE Arca Biotech Index Fd

SPDR S&P Semicon

Proshares Ultra Nasdaq Biotech

Invesco Biotechnology & Genome ETF

VanEck Biotech ETF

iShares US Medical Devices

GeneDx

Invesco Semiconductors ETF

Coreweave

iShares Semiconductor ETF

First Trust Nasdaq Food & Semicon

T-REX 2X Long CRWV Daily Target ETF

Ark Genomic Revolution ETF

iShares Genomics Immunology and Healthcare ETF

Leverage Shares 2X Long CRWV Daily ETF

CRWV, OKLO, TER: Cathie Wood Buys the Dip in CoreWeave and Oklo Stocks, Dumps Teradyne