Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

- Shares of Nvidia (NVDA) rallied ahead of the US market open after CEO Jensen Huang announced the company's plan to enter the PC market with a new chip aimed at loosening the stranglehold of Intel's technology in that arena and modernizing the machines for the AI era. Starting this fall, Nvidia’s new RTX Spark Superchip will debut in laptop and desktop computers from leading PC brands including Dell Technologies Inc. and Lenovo Group Ltd.
- Berkshire Hathaway Inc. (BRK/A) says it will acquire Taylor Morrison Home Corp. (TMHC) in an all-cash deal worth about $6.8 billion. It marks the first major purchase under chief executive Greg Abel and a vote of confidence in the US housing market. The offer of $72.50 per common share represents a 24% premium to the home builder’s latest closing price on Friday. It’s the largest deal since Berkshire bought Occidental Petroleum Corp.’s petrochemical business in January.
- Shares of Hewlett Packard Enterprise (HPE) rallied in premarket trading ahead of second-quarter results due after the market close on Monday. Expectations could be elevated after a blowout report from peer Dell Technologies, which showed huge demand for AI servers. Shares jumped as much as 16.7% on Friday, following Dell’s report. The stock is up 83% this year. However, analysts caution that high prices for memory-related components could be a headwind.