Billionaire hedge‑fund manager Stanley Druckenmiller, who runs the Duquesne Family Office, disclosed a series of portfolio adjustments in the second quarter. The firm trimmed its position in SanDisk (NASDAQ: SNDK) and simultaneously expanded its stakes in three AI‑centric technology leaders: Taiwan Semiconductor (NYSE: TSM), Alphabet (NASDAQ: GOOG / GOOGL), and Amazon (NASDAQ: AMZN).
The decision to reduce the SanDisk holding followed a strong first‑half rally for the memory‑chip maker, making the profit‑taking a prudent move after the stock’s sharp appreciation.
Druckenmiller’s Q2 buildup reflects a strategic bet on the accelerating AI infrastructure boom. TSMC, the world’s largest logic‑chip producer, saw its weight in the portfolio jump by 19%, elevating it to Duquesne’s second‑largest holding. Alphabet and Amazon were added to the lineup, with Amazon now representing roughly 3% of the portfolio and Alphabet a new 2.75% position.
Was selling SanDisk a good idea?
We know about Druckenmiller’s investing activities because no later than 45 days into every quarter, any fund that manages more than $100 million in assets has to file a Form 13‑F with the SEC. That form details the fund’s holdings as of the end of the prior quarter, giving the public a snapshot of how these portfolios are evolving. For long‑term managers like Druckenmiller, this filing is a useful tool for tracking strategic shifts rather than short‑term trades.
Druckenmiller is one of the more successful long‑term investors that I follow, and his fund reducing its SanDisk stake in Q2 makes a ton of sense, because the stock went on a major run to start the year. Taking some gains off the table after such a run‑up is a prudent investing move. However, the minor trim to his SanDisk position was outweighed by the amount he deployed to load up on shares of Taiwan Semiconductor, Alphabet, and Amazon, and those buys are what investors should be more focused on.
These three are no‑brainers winners in the AI arms race
Taiwan Semiconductor, Alphabet, and Amazon all share a common thread: they are clear beneficiaries of the AI infrastructure build‑out. TSMC is the most obvious choice, as the surge in AI computing demands more high‑performance chips. As the largest logic‑chip producer on the planet, TSMC’s dominant market position and capacity expansions ensure it will reap the benefits of continued AI spending.
Amazon and Alphabet are in a similar boat, even though their core businesses differ. From an AI perspective, both are capitalizing on the race through their cloud‑computing divisions, which are supplying the massive processing power needed for AI workloads. Each plans to spend at least $200 billion on capital expenditures this year, chiefly to construct and equip new data centers. This scale of investment underscores the surging demand for compute resources, and as these hyperscalers bring more capacity online, their cloud revenues are poised for rapid, high‑margin growth.
That makes Amazon and Alphabet compelling stocks to own now, because the growth stemming from their massive infrastructure spending has yet to fully flow through to earnings. Druckenmiller recognized this dynamic, which explains his sizable increase in the Amazon position and the addition of Alphabet to Duquesne’s portfolio.
Because the bulk of the effects from the latest round of AI build‑outs are still not being felt by these three, they have plenty more room for upside as the market continues to capitalize on the AI surge.


