The Dow Jones Industrial Average, which has gained for six months in a row, kept its winning streak going Monday. The blue chip index was up all day but the buying really gained steam into the close, sending the Dow up 138 points, or 0.9%.
The S&P 500 and Nasdaq added between 0.3% and 0.6%, after drifting between positive and negative territory for most of the day.
Tomorrow, investors will see if Dow can extend its Super Tuesday streak and close higher for the 21st Tuesday in a row.
It's been a stellar year for stocks so far. All three indexes are up between 14% and 16%.
This year's bull run has been accompanied by a dose of volatility over the past few weeks, as investors worry about when the Federal Reserve might pull back on its bond buying program.
Zynga gets zinged: Online gaming company Zynga(ZNGA) is cutting 18% of its workforce and closing up shop in New York, Dallas, and Los Angeles. Shares of the Farmville creator sank more than 12% once the company reopened for trading. The stock was halted shortly after All Things D reported the layoffs.
America's love affair with automobiles reignited:Ford(F), General Motors(GM), and Toyota(TM) all reported stronger-than-expected U.S. auto sales for May.
Separately, Ford announced that it was recalling 465,000 due to fuel leaks.
Shares of Tesla(TSLA), the electric car company founded by Elon Musk, floundered as Americans showed continuing allegiance to the traditional car makers.
Merck leads rally in drug stocks: Shares of Merck(MRK) rose sharply, after the pharmaceutical firm announced a positive study for a skin cancer treatment.
The news boosted shares of GlaxoSmithKline(GSK), Bristol-Myers Squibb(BMY), and Pfizer(PFE).
Intel(INTC) got a big boost from an analyst upgrade, making it and Merck the biggest Dow gainers Monday.