Cathie Wood’s ARK makes major moves in Trade Desk and Block stock

Cathie Wood’s ARK ETFs have once again made significant trades on Tuesday, 12 August 2025, with a major focus on tech and biotech stocks. The most substantial trade of the day was the purchase of 738,367 shares of Trade Desk Inc (NASDAQ:TTD), with a total dollar value of $39,266,357. This move comes as ARK continues to show confidence in the digital advertising platform, which has seen a notable accumulation in its shares by the fund in recent days.

Another prominent transaction involved Block Inc (NYSE:XYZ), previously known as Square, where ARK sold 215,543 shares, equating to a substantial $15,741,105. This sale represents one of the larger divestments for the day and could signal a strategic shift in ARK’s position on the financial services and digital payments company.

ARK also executed a significant buy of 643,406 shares of Pinterest Inc (NYSE:PINS), valued at $21,998,051. The social media company has been a recurring interest for ARK, as evidenced by consistent buying in the past week. This trend suggests a bullish outlook from ARK on Pinterest’s growth prospects.

In biotech, ARK’s ARKK ETF bought 128,896 shares of CRISPR Therapeutics AG (NASDAQ:CRSP) totaling $714,567, continuing its investment in the gene-editing company. On the other hand, ARK’s various ETFs sold off shares of DraftKings Inc (NASDAQ:DKNG), Guardant Health Inc (NASDAQ:GH), Robinhood Markets Inc (NASDAQ:HOOD), Palantir Technologies Inc (NYSE:NASDAQ:PLTR), Roblox Corp (NYSE:RBLX), and Shopify Inc (NYSE:NASDAQ:SHOP), with DraftKings seeing the largest sell-off of 221,203 shares at a value of $9,452,004.

Other notable buys included Exact Sciences Corp (NASDAQ:EXAS) and Personalis Inc (NASDAQ:PSNL), with ARK purchasing 93,753 and 134,035 shares valued at $3,835,435 and $603,157, respectively. The consistent buying in these stocks could indicate a focused strategy on companies that ARK believes are innovating within the healthcare space.

Smaller trades were also part of the day’s activity, with ARK buying shares of Compass Pathways PLC (NASDAQ:CMPS) and 10X Genomics Inc (NASDAQ:TXG). Despite the lower dollar values, these trades might be part of a long-term strategy in emerging companies within their respective sectors.

Investors and market watchers alike pay close attention to Cathie Wood’s ARK ETFs’ daily trades as indicators of where the influential fund sees potential growth and innovation. As always, these trades offer a glimpse into ARK’s dynamic investment strategy in a rapidly changing market landscape.

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