$SNDK QuantLogix Newsdesk · June 8, 2026 at 8:19 PM UTC

Appaloosa Opens New SNDK Position as Tepper Trims Microsoft Stake

What happened

Billionaire hedge fund manager David Tepper's Appaloosa Management initiated a new stake in SanDisk (SNDK), an AI-focused memory chipmaker, according to a regulatory filing dated June 8, 2026. The move accompanied a significant reduction in Appaloosa's existing Microsoft position. SanDisk operates in the high-bandwidth memory and NAND flash storage segment, areas receiving increased capital allocation from AI infrastructure buildouts. The filing reflects portfolio positioning as of the most recent reporting period.

The QL Read

QuantLogix composite for SNDK sits at 69/100, with the stock at $1,642.00, up 5.58% on the session. The reading remains just below the 70 mark, a level that has historically coincided with stronger institutional accumulation signals.

Source: The Motley Fool — "Billionaire David Tepper Sold Most of Appaloosa's Position in Microsoft and Initiated a New Stake in an Artificial Intelligence (AI) Memory " — 2026-06-08T08:05:00Z

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