Appaloosa trims stake in Microsoft, piles up on Micron, and exits American Airlines in Q1 moves

Appaloosa Management’s first-quarter portfolio changes show a rotation of risk: the hedge fund trimmed its stake in Microsoft (MSFT), while materially adding to Micron (MU) and Amazon (AMZN), initiating a new position in Sandisk and fully exiting American Airlines (AAL). The moves constitute an institutional reallocation that could modestly pressure MSFT shares while signaling bullish conviction in semiconductors and large-cap tech (MU, AMZN). Exiting AAL is a clear reduction in airline exposure, reflecting either idiosyncratic view or broader caution on travel names. Overall, these filings are a typical hedge-fund reweighting that may influence investor sentiment in the named stocks but are not on their own market-moving in isolation.