RECORD BREAKER: The stock market rallied to a record Wednesday after some encouraging news on the economy this week. Reports on manufacturing and hiring have suggested that the economy is starting to strengthen after a lull caused by unusually harsh weather this winter. There was more good news on Thursday. The Institute for Supply Management's non-manufacturing index rose to 53.1 in March, up from 51.6 in February, indicating that growth in the service sector is picking up. The survey also showed hiring picking up.
"The market does seem to be getting pretty excited about each new data set," said Brad McMillan, chief investment officer at Common Financial Network, an investment adviser. "So, with the economy continuing to strengthen, you very well could see the market continuing to rise."
BIOTECH SLUMP: The S&P's index of biotechnology stocks fell 2.4 percent, dragging down health care stocks. Biotech stocks have become volatile in the recent weeks amid concerns about the cost of drugs. The index is up about 3 percent this year after climbing as much as 13 percent by the end of February.
BOOK ENDS: Barnes & Noble fell $3.23, or 14.6 percent, to $18.88 after Liberty Media said it was cutting its stake in the company. Liberty Media, the investment company controlled by billionaire John Malone, gave Barnes & Noble a lifeline in 2011 when it bought a 17 percent stake in the company.
SPLIT ENDS: Google's stock split took effect Thursday. Google's new Class C non-voting shares were little changed at $567.34, while its Class A shares were also little changed at $568.93. The Class A shares, which have been traded since the company went public nearly a decade ago, now trade under the ticker symbol "GOOGL." The Class C shares inherited the "GOOG" ticker symbol.
BONDS AND COMMODITIES: Bond prices rose. The yield on the 10-year Treasury note fell to 2.78 percent from 2.80 percent on Wednesday. The price of oil rose 67 cents, or 0.7 percent, to $100.29 a barrel. Gold fell $6.20, or 0.5 percent, to $1,284.60 an ounce.