Super-investors reveal their portfolios: two stocks that gained big
The recently published F13 forms for the second quarter of 2026 reveal the investment strategies of Wall Street's most influential figures. Key trends include massive bets on Alphabet and SpaceX, alongside a significant sell-off of chip manufacturer stocks.
Every three months, as the dust of the quarter settles, investors turn their attention to one of the most anticipated periods on Wall Street: the disclosure of F13 forms. Any entity managing over $100 million is required to publish these reports, providing a direct glimpse into the buying and selling actions of the world's most powerful investors.
Globes analyzed five portfolios: Berkshire Hathaway (in the post-Warren Buffett era), Cathie Wood, Bill Ackman, Ray Dalio, and the exception, Leopold Aschenbrenner. The prominent trend is the massive buying of Alphabet (Google) shares. The stock rose by about 20% in the second quarter, reaching an all-time high, though it is currently trading about 13% below that peak.
Berkshire Hathaway: Buffett's successors break the cash mountain for Google
Under Greg Abel, Berkshire Hathaway has begun deploying its massive cash pile. The company poured over $17 billion into Alphabet, bringing the total value of its position to approximately $37.8 billion (12.6% of the portfolio). Alphabet is now Berkshire's fourth-largest holding.
Abel also increased holdings in Delta Air Lines and Macy's. These moves were funded by cautious divestments: Berkshire reduced its stake in Bank of America by 5.89% ($1.72 billion), sold 22% of Kroger ($620.5 million), and completely liquidated its stake in Constellation Brands.
Cathie Wood: Betting on Elon Musk and Israeli firms
The head of ARK Invest made a massive entry into SpaceX, purchasing $765 million in shares immediately following the IPO. Elon Musk's companies now account for 12.5% of Wood's portfolio. She also purchased $114 million in Alphabet shares and $69 million in Nvidia.
To finance these purchases, Wood cut her stake in AMD by nearly half ($753.63 million) and reduced positions in biotech companies. In the Israeli sector, she more than doubled her holding in Similarweb (to $5.12 million) and realized nearly half of her stake in Tower ($2.64 million).
Bill Ackman: A complete exit from Google
Unlike Berkshire, billionaire Bill Ackman and Pershing Square completely liquidated (100%) their holdings in Alphabet. Ackman also realized a quarter of his Amazon stake ($674.5 million). The freed-up capital was channeled into defensive moves: Uber (increased to $2.5 billion) and Microsoft (to $2.3 billion). New positions were also opened in Mastercard, Visa, S&P Global, and Netflix.
Ray Dalio: Flight from the chip sector
The founder of Bridgewater bet big on SpaceX, increasing his stake by $719 million to a total of $4 billion. He also bolstered positions in Shell and PG&E. Funding came from a widespread exit from chip stocks: Dalio liquidated 92.09% of his Micron stake ($1.57 billion) and 96.79% of his TSMC stake ($497.5 million).
Leopold Aschenbrenner: Aggressive growth before the collapse
The portfolio of 25-year-old Situational Awareness manager Leopold Aschenbrenner jumped 99.26% in the second quarter to $20.3 billion. He poured $5.58 billion into Micron and $3.1 billion into SanDisk. He also opened a $1.2 billion position in Nebius. These leveraged moves were financed by the complete liquidation of his Intel and AMD holdings.
