(Reuters) - The Dow Jones Industrial Average hit a record closing high on Monday, helped by Boeing, while selling in Facebook, Alphabet and other technology companies checked the S&P 500 and pulled the Nasdaq lower.

The S&P 500 information technology .SPLRCT dipped 0.53 percent, with Facebook FB.O falling 1.86 percent and Alphabet GOOGL.O, Google's parent company, down 1.34 percent.

“The bull market is sort of broadening out and people are taking a few profits off the table on some of these stocks that have done exceedingly well,” said Randy Frederick, vice president of trading and derivatives for Charles Schwab in Austin, Texas.

Boeing BA.N rose 0.49 percent and hit a record high of $242.46 after JPMorgan raised its price target on the world's biggest plane maker to $280 per share.

The market reacted little to news that U.S. President Donald Trump’s communications director, Anthony Scaramucci, was leaving the job after little over a week, the latest staff upheaval to hit the Republican’s six-month-old presidency.

In July, the S&P 500 rose 1.9 percent, the Dow added 2.5 percent and the Nasdaq gained 3.4 percent.

Apple Inc AAPL.O, which is expected to report quarterly results after the market close on Tuesday, dipped 0.51 percent.

Traders work on the floor of the New York Stock Exchange (NYSE) in New York, U.S., July 20, 2017. REUTERS/Brendan McDermid

Investors have been counting on earnings to support high valuations for equities.

S&P 500 earnings are expected on average to have grown 10.8 percent in the second quarter, according to Thomson Reuters I/B/E/S.

“The market in the last week has become jittery,” said Dennis Dick, head of markets structure, proprietary trader at Bright Trading LLC in Las Vegas. “Money managers are looking to take profits and for any excuse to do so.”

The Dow Jones Industrial Average .DJI rose 0.28 percent to end at 21,891.12 points and the S&P 500 .SPX lost 0.07 percent to 2,470.3. The Nasdaq Composite .IXIC dropped 0.42 percent to 6,348.12.

Just four of the 11 major S&P sectors rose, with the financial index's .SPSY 0.62 percent rise leading the gainers.

Tesla TSLA.O dropped 3.46 percent after Chief Executive Elon Musk warned that the electric carmaker would face "manufacturing hell" as it ramps up production of its new mass-market Model 3 sedan.

Snap SNAP.N fell 1.01 percent as some investors were allowed for the first time to sell shares following the Snapchat owner's March initial public offer.

Discovery Communications DISCA.O dropped 8.21 percent after it said it would buy Scripps Networks Interactive SNI.O for $11.9 billion.

Charter Communications Inc CHTR.O rose 5.85 percent to a record high after a source said Japan's SoftBank Group Corp 9984.T was considering an acquisition offer.

About 6.3 billion shares changed hands in U.S. exchanges, above the 6.0-billion average over the last 20 sessions.