Cathie Wood’s Ark Invest leaned into some of its highest-conviction growth themes on Wednesday, July 29, led by a broad push into Space Exploration Technologies (NASDAQ:SPCX), Taiwan Semiconductor Manufacturing (NYSE:TSM), Amazon.com (NASDAQ:AMZN) and Alphabet (NASDAQ:GOOGL). The buying and selling spree came as those names sat near major news catalysts, with SpaceX facing heavy short bets, TSMC under pressure from a tech rotation and Amazon heading into an earnings watch period.
The SpaceX Trade
Ark continued accumulation of SpaceX, with purchases spread across ARK Innovation ETF (BATS:ARKK), ARK Autonomous Technology & Robotics ETF (BATS:ARKQ), ARK Next Generation Internet ETF (BATS:ARKW) and ARK Space & Defense Innovation ETF (BATS:ARKX). The transactions were estimated to be worth $14.5 million, based on the Elon Musk-led company’s shares closing at $112.55.
The purchases come against a backdrop of rising bearish activity. Benzinga reported that SpaceX has attracted about $26 billion in short bets, with roughly 35% of the float sold short, making it one of the most heavily shorted names in the market. The report also pointed to upcoming catalysts, including earnings on Aug. 4 and a first lockup expiry two days later.
On Tuesday, Wood had added $12.2 million worth of SpaceX stock. Ark has been consistently purchasing the post-IPO dip in the stock.
The Taiwan Semiconductor Trade
TSMC was another major target for Ark, with purchases appearing in ARKK, ARKQ, ARKW and ARKX. The total number of shares purchased was worth $20.1 million. TSM ended the day at $374.67.
TSMC shares have fallen 4.88% in the past 5 days and shed nearly 7% of their value over a month. Even so, the company’s longer-term technical setup remained intact, with shares still trading above key moving averages and analysts keeping a bullish stance on the name.
The Amazon.com Inc Trade
Amazon was one of the notable sell-side moves in Ark’s daily trading, with ARKK trimming 4,902 shares. The transaction was valued at $1.1 million, based on the stock’s closing price of $226.65.
The reduction came as investors began looking ahead to Amazon’s quarterly report, with the company still viewed as one of the most important names in cloud, e-commerce and AI spending.
Benzinga’s preview on Amazon emphasized that analysts expect the company to post second-quarter revenue of $196.02 billion, with AWS remaining the key driver to watch. The story also noted that Amazon has beaten revenue estimates in seven straight quarters.
The Alphabet Trade
Alphabet was also cut by Ark, with ARKK selling 3,344 Class A shares worth $1.1 million. The stock ended the day at $336.71. The move adds to a broader pattern of Ark trimming exposure to large-cap internet platforms while rotating into more concentrated innovation bets elsewhere in the portfolio.
Alphabet has also been in the market spotlight for another reason: Benzinga recently highlighted it as one of 2026’s most shorted stocks. That adds a layer of context to Ark’s decision to lighten up, especially with the company still facing investor debate over ad growth, AI monetization and competitive pressure.
Other Key Trades
Ark added heavily to Kratos Defense and Security Solutions (KTOS).
Ark bought more Tesla (TSLA) with the shares purchased worth $541,152.
Ark added to BWX Technologies (BWXT).
Ark sold Robinhood Markets (HOOD), Shopify (SHOP) and Block (XYZ), trimming some of its most widely followed consumer-fintech holdings.
Ark also reduced positions in Roblox (RBLX), Illumina (ILMN), CRISPR Therapeutics (CRSP) and Natera (NTRA), continuing to pare back several volatile growth names.
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