Cathie Wood's ARK Invest Sees Biotech and AI Potential, Sells Rocket Lab Shares

Cathie Wood's ARK Invest has invested nearly $3 million in Illumina and over $2 million in Nvidia, while trimming stakes in Guardant Health and Rocket Lab USA. The firm added 31,265 Illumina shares and 11,973 Nvidia shares, but sold 68,228 Guardant Health shares and 43,481 Rocket Lab USA shares. These moves mark a sustained reduction in these positions.

ARK Invest, led by Cathie Wood, has made significant moves in its portfolio, reflecting a strategic focus on technology and genomics sectors. On July 22, 2025, ARK Invest's ARKG ETF purchased 31,265 shares of Illumina Inc. (NASDAQ: ILMN) for nearly $2.98 million, underscoring the fund's interest in the biotechnology sector, particularly genomics innovations [1]. Concurrently, the ARKX ETF added 11,973 shares of Nvidia Corp. (NASDAQ: NVDA) valued at approximately $2.05 million, aligning with ARK's bullish stance on high-tech companies leading in AI and graphics processing technologies [1].

On the sell-side, ARK's ARKG ETF reduced its position in Guardant Health Inc. (NASDAQ: GH) by selling 68,228 shares for over $3.11 million, continuing a sell-off pattern seen in previous weeks. This move could indicate a strategic rebalancing of the portfolio or a reallocation of capital to other opportunities [1]. Additionally, ARKX ETF sold a substantial portion of its holdings in Rocket Lab USA Inc. (NASDAQ: RKLB), offloading 43,481 shares for roughly $2.05 million, potentially reflecting ARK's assessment of the space industry's near-term outlook or Rocket Lab's specific performance [1].

ARKF ETF made a smaller-scale investment in Ibotta Inc. (PRIVATE: IBTA), buying 2,517 shares at a value of $96,275. This transaction demonstrates ARK's approach to identifying and investing in emerging fintech players [1].

These moves suggest a tactical approach to portfolio management, with significant investments in technology and genomics while divesting from specific companies in precision health and aerospace. Investors closely following ARK’s moves will be keen to see how these trades align with the ETFs’ broader investment theses and whether they indicate shifting trends in the market or adjustments in ARK’s long-term strategy [1].

References:
[1] https://www.investing.com/news/company-news/cathie-woods-ark-etfs-shift-focus-buying-nvidia-and-selling-guardant-93CH-4147095
[2] https://finance.yahoo.com/news/cathie-wood-goes-bargain-hunting-150700053.html
[3] https://www.thestreet.com/crypto/markets/cathie-wood-calls-latest-investment-a-vote-of-confidence