According to recently filed 13F documents, eight billionaire money managers significantly reduced or exited their stakes in Micron Technology during the second quarter. This move was largely attributed to profit-taking after Micron's stock quadrupled between March 30 and June 25. Concurrently, several of these managers, including Stanley Druckenmiller's Duquesne Family Office and Ken Fisher's Fisher Asset Management, increased their positions in Taiwan Semiconductor Manufacturing (TSMC), citing its foundational role in AI data center build-out and its dominant 72% share of global contract chip manufacturing.