US stock futures were being held back by uncertainty over tensions between the U.S. and Iran Monday but high-flying technology names were unperturbed, continuing their march higher.

Intel stock was rising 4.4% and putting it on track for another record high. The shares jumped 10.6% Thursday to close at an all-time high of $133.99 as President Donald Trump said the semiconductor company won a chip-manufacturing deal with Apple.

Micron gained more than 3% as investors remained bullish on the memory-chip maker ahead of its much-anticipated earnings on Wednesday. Like Intel, Micron also closed at a record high Thursday.

Super Micro Computer, Western Digital, Sandisk, Seagate Technology, and Corning were among the other artificial-intelligence stocks enjoying sizable gains ahead of the open.

But other tech stocks, and some of the biggest in particular, were set to start the week on the back foot. SpaceX was down 5.5% as Elon Musk's company was heading for a third consecutive day of losses. Alphabet, Amazon, Tesla, Nvidia and Broadcom were all lower, too.

Apogee Therapeutics soared 54% to $139.38 on a Financial Times report that AbbVie was in talks to buy the biotech company for $10.9 billion in cash. AbbVie rose 4.2%.

Arcosa was rising 11.5% following reports that Irish building materials company CRH is nearing a deal to buy it for more than $8 billion. CRH and Arcosa didn't immediately respond to requests for comment Monday.