The declines have been led by the technology and utilities sectors. Each group is down 1.8 percent. Banks, insurers and other financial companies make up the only sector in the S&P 500 that has advanced this year, gaining 0.3 percent.
KEEPING SCORE: The Standard & Poor's 500 fell two points, or 0.3 percent, to 1,825 as of 2:24 p.m. Eastern time. The Dow Jones industrial average dropped eight points, or 0.1 percent, to 16,461. The Nasdaq composite fell 14 points, or 0.4 percent, to 4,117.
COMING UP THIS WEEK: The minutes from the Federal Open Market Committee will be released on Wednesday. They will offer insight into the Fed's thinking after it said it would begin winding down its monthly $85 billion bond-buying program.
The highlight of the week will likely be, Friday when the Labor Department releases its jobs report for December. That's going to influence the Fed's decisions on how fast to reduce its bond purchases in the coming months.
Alcoa, a former Dow stock, will be one of the first major companies to report its fourth quarter earnings after the close of the market on Thursday.
TOO EARLY TO TELL: Despite the slow start to the year, many analysts still say it's too early to call a change in the market's upward trend.
"This downturn is persisting a little bit more than I would expect," said Jack Ablin, chief investment officer at BMO Private Bank. "Between the jobs report Friday and earnings results next week, we will have a much better idea of the drivers of the market."
THE ECONOMY: U.S. service companies grew at a steady but slightly slower pace in December. Sales dipped and new orders plunged to a four-year low, according to a report from the Institute for Supply Management. The report suggests that growth may remain modest in the coming months.
U.S. factory orders climbed in November, led by a surge in aircraft demand. Businesses stepped up spending on machinery, computers and other long-lasting goods. Factory orders rose 1.8 percent in November, the Commerce Department said Monday.
TAKEOVER TALES: Men's Wearhouse is going hostile in its takeover bid for Jos. A. Bank Clothiers. A $1.61 billion bid announced early Monday comes four months after Jos. A. Bank made its own takeover bid for its larger rival. Men's Wearhouse rejected the offer and bid for Jos. A. Bank. After failing to reach a deal, Men's Wearhouse is going directly to Jos. A. Bank shareholders. Jos. A. Bank rose $2.34, or 4.3 percent, to $56.75. Men's Wearhouse climbed $1.35 cents, or 2.7 percent, to $51.94.
Sirius XM rose 24 cents, or 6.6 percent, to $3.81 after Liberty Media said late Friday that it wants to take full ownership of the satellite radio company in a deal that would value it at nearly $23 billion.
BEST BUY: The electronics retailer Best Buy, one of best performers in the S&P 500 last year, is having a tough start to the year. The retailer's stock slipped $1.65, or 4 percent, to $39.03 on Monday, after Hhgregg, one of its smaller competitors, forecast disappointing sales for the holiday season.
PET PEEVES: PetSmart fell $1.80, or 2.5 percent, to $70 after analysts at Deutsche Bank advised their clients to sell the company's stock, predicting the pet retailer will struggle as it faces increased competition.
TREASURIES AND COMMODITIES: The yield on the 10-year Treasury note fell to 2.96 percent from 3 percent on Friday. The price of oil fell 50 cents, or 0.6 percent, to $93.44 a barrel. Gold was little changed from Friday at $1,238 an ounce.