By Benjamin Pimentel, MarketWatch

SAN FRANCISCO (MarketWatch) -- Technology stocks started in mostly negative territory Tuesday, highlighted by a sharp decline in Apple Inc. as investors reacted to news that Steve Jobs, the company's iconic chief executive, is going on another medical leave.

Shares of Apple (AAPL) fell 4% in heavy trading.

"While Steve Jobs's health has been a constant concern for investors, given previous issues and his importance to the company, we believe this announcement will still come as a negative surprise given it is the second leave in just two years, and this time there doesn't appear to be a date set that he expects to be back," wrote Barclays Capital analyst Ben Reitzes in a note.

The Nasdaq Composite Index (RIXF) slipped 0.1% to 2,753. The Morgan Stanley High Tech 35 Index (MSH) was up a fraction, but the Philadelphia Semiconductor Index (SOX) declined 0.3%.

Meanwhile, shares of Yahoo Inc. (YHOO) fell 1.7% as the Internet giant's stock was downgraded to equal weight from overweight by Morgan Stanley.

Chip maker Nvidia Corp. (NVDA) also saw its shares fall 1.6% as BMO cut its rating on the stock to market perform from outperform.

Other major tech shares joined in the decline, including Intel Corp. (INTC), Applied Materials Inc. (AMAT) and Juniper Networks Inc. (JNPR).

Advancers included Oracle Corp. (ORCL), Microsoft Corp. (MSFT) and Texas Instruments Inc. (TXN)

 
 
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