Buffett's 2016 Precision Castparts buy now a data center windfall

When Warren Buffett led Berkshire Hathaway to acquire Precision Castparts for $37.2 billion（約6兆円） in 2016, the rationale centered on aerospace exposure; the Portland, Oregon-based company manufactures specialty metal components for the aerospace and industrial sectors. For several years, the deal appeared sound, but the COVID-19 pandemic upended that thesis. In 2021, at the height of pandemic disruptions, Berkshire acknowledged the acquisition had been ill-fated and wrote down nearly $10 billion（約1.6兆円） in goodwill, attributing the subsidiary's diminished value to the pandemic's crushing impact on air travel and the resulting collapse in aerospace demand.

The narrative shifted dramatically as AI infrastructure expansion accelerated. Hyperscalers — the term for large cloud providers building out data center capacity to support AI workloads — began deploying gas-powered turbines as their primary power solution for these facilities. Precision Castparts' specialty metal turbine components, originally engineered for jet engines, proved equally suited to power-generation turbines; with only a handful of competitors in this specialized niche, the company found itself in a rare position to capture surging demand.

The financial results validate this reversal. Operating cash flow collapsed to $900 million（約1400億円） annually during the 2021 pandemic nadir but rebounded sharply to $2.4 billion（約3800億円） last year — a level that now exceeds the company's pre-acquisition performance of approximately $1.7 billion（約2700億円） in annual operating cash flow. The turnaround underscores how Buffett's indirect exposure to AI infrastructure, though unconventional, has become substantial. Berkshire Hathaway may lack pure-play AI stocks like Nvidia or Palantir in its portfolio, but through Precision Castparts, it has positioned itself to benefit meaningfully from the data center and power infrastructure requirements of the AI boom.

Buffett's Berkshire Hathaway has long been selective about technology exposure, but the holding company has gradually accumulated positions in tech stocks over recent decades, including Apple and Alphabet. While neither fully qualifies as a pure-play AI stock in the manner of Nvidia or Palantir, Berkshire gains meaningful AI exposure through an unconventional path: Precision Castparts, a wholly owned operating subsidiary acquired in 2016 for $37.2 billion（約6兆円）.

The acquisition appeared ill-timed when the pandemic devastated aerospace demand in 2021, prompting Berkshire to write down nearly $10 billion（約1.6兆円） in goodwill. Yet the company's fortunes have reversed dramatically. As hyperscalers (large cloud providers) build out AI data center capacity, they have increasingly adopted gas-powered turbines as a power solution. Precision Castparts manufactures specialty metal components for turbines, and the structural similarities between jet engine and power-generation turbine parts position the company to capitalize on this infrastructure shift. Operating cash flow has nearly tripled from the 2021 pandemic trough of $900 million（約1400億円） to $2.4 billion（約3800億円） last year — exceeding even pre-acquisition levels of around $1.7 billion（約2700億円） annually — demonstrating how a business once viewed as a strategic misstep has become a proxy for AI infrastructure growth.

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