Shares of Boeing BA, -3.58% turned down 1% in premarket trade Tuesday, after President-elect Donald Trump tweeted that an order for the aerospace giant to build a new Air Force One should be canceled because of rising costs. Just prior to the tweet, the stock was trading unchanged. "Boeing is building a brand new 747 Air Force One for future presidents, but costs are out of control, more than $4 billion. Cancel order!," the tweet said. About 18 minutes after the tweet was sent, it had 12,000 likes and 4,300 retweets. Boeing's stock has gained 5.2% year to date through Monday, while the Dow Jones Industrial Average DJIA, -1.92% has rallied 10%.