US stocks had declined on Tuesday as Apple and shares of its parts suppliers weakened on a report of soft iPhone X demand, which pulled technology shares lower.

According to Taiwan's Economic Daily, citing unidentified sources, Apple will slash its sales forecast for its flagship phone in the current quarter to 30 million units, down from what it said was an initial plan of 50 million units. The report, along with some recent brokerage calls on tepid iPhone X demand, made Apple shares sink 2.5 per cent, their worst single-day percentage fall since August 10.

“There is news in Apple today so it is causing some kind of angst in certainly Apple, maybe some Apple suppliers and maybe some tech in general,” said Ken Polcari, Director of the NYSE floor division at ONeil Securities in New York.

“The whole Apple thing is giving people an excuse to take some money out of tech because it has been such a great performer.”

Shares of companies that supply parts to Apple, including Broadcom, Skyworks Solutions, Finisar and Lumentum Holdings, all fell. The PHLX semiconductor index lost 0.97 per cent.

The S&P technology index fell 0.70 per cent, the worst performer among the 11 major S&P 500 sectors. The index has come under pressure in recent days and suffered its fifth straight decline as market participants see tech names getting a smaller boost from last week's US tax overhaul. Despite the declines, the tech sector is still up nearly 40 per cent for the year.

The Dow Jones Industrial Average fell 7.85 points, or 0.03 per cent, to 24,746.21, the S&P 500 lost 2.84 points, or 0.11 per cent, to 2,680.5 and the Nasdaq Composite dropped 23.71 points, or 0.34 per cent, to 6,936.25.

Most markets around the world, including parts of Europe and Asia, were shut on Tuesday. Trading volumes were light due to the holiday-shortened week. Losses were curbed by a boost in energy stocks as oil prices jumped more than 2 per cent, helped by an explosion on a crude pipeline in Libya and voluntary OPEC-led supply cuts.

Chevron rose 0.8 per cent and EOG Resources gained 2.1 per cent to lead the S&P energy sector 0.82 per cent higher.

Shares of department store operators Kohl's, JC Penney and Macy's got a boost after a report that retail sales in the holiday period rose at their strongest pace since 2011. The S&P retail index advanced 0.63 per cent. Sucampo Pharma surged 5.9 per cent after Mallinckrodt said it would acquire the drugmaker for $1.2 billion. Mallinckrodt shares rose 0.7 per cent.

Advancing issues outnumbered declining ones on the NYSE by a 1.30-to-1 ratio; on Nasdaq, a 1.14-to-1 ratio favoured decliners. The S&P 500 posted 39 new 52-week highs and two new lows; the Nasdaq Composite recorded 88 new highs and 26 new lows.

Volume on US exchanges was 4.03 billion shares, the lowest volume of the year for a full session, compared to the 6.9 billion average for the full session over the last 20 trading days.

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