(Corrects to drop reference to consumer confidence data in the last paragraph as it is expected on Wednesday not Tuesday)
* Futures down: Dow 35 pts, S&P 0.5 pts, Nasdaq 15.75 pts
By Sruthi Shankar
Dec 26 (Reuters) - U.S. stock futures were slightly lower on Tuesday in light trading volumes after Christmas holiday as losses in Apple and a bunch of chipmakers weighed.
Apple's shares fell more than $4 to $170.88 in premarket trading after Taiwan's Economic Daily reported that demand for iPhone X could come in below expectations in the first quarter.
Shares of iPhone maker's suppliers - Broadcom, Skyworks Solutions and Qorvo - fell between 1 percent and 2 percent.
Chipmakers Micron and Advanced Micro Devices were also down about 1.5 percent each.
Sucampo Pharma jumped about 5 percent after Mallinckrodt said it would acquire the drugmaker for $1.2 billion, to gain access to its constipation drug Amitiza.
At 6:51 a.m. ET, Dow e-minis were down 35 points, or 0.14 percent, with 6,437 contracts changing hands.
S&P 500 e-minis were down 0.5 points, or 0.02 percent, with 17,734 contracts traded.
Nasdaq 100 e-minis were down 15.75 points, or 0.24 percent, on volume of 7,000 contracts.
The indexes ended with weekly gains on Friday after a long-promised Republican bill to cut corporate tax rates was ratified and a short-term spending bill that averted a government shutdown was approved.
Bitcoin traded up 7.7 percent at $14,954, recovering from last week's selloff which saw the cryptocurrency fall below $12,000.
Shares of Riot Blockchain, Longfin Corp and Overstock.com rose between 3 percent and 12 percent. (Reporting by Sruthi Shankar in Bengaluru; Editing by Anil D'Silva)