Another wave of corporate dealmaking stoked investors' confidence in the economy and carried stocks sharply higher Monday.
Analyst upgrades of Alcoa Inc. and Intel Corp. and positive momentum on President Obama's health care overhaul also helped drive a broad rally on the stock market. Major indexes closed off their highs of the day but still rose about 1 percent. The Dow Jones industrial average jumped into the black for the month.
The Dow Jones industrial average rose 85.25, or 0.8 percent, to 10,414.14.
The Standard & Poor's 500 index rose 11.58, or 1.1 percent, to 1,114.05.
The Nasdaq composite index rose 25.97, or 1.2 percent, to 2,237.66.
For the year:
The Dow is up 1,637.75, or 18.7 percent.
The S&P is up 210.80, or 23.3 percent.
The Nasdaq is up 660.63, or 41.9 percent.