Comforce Corp. (AMEX: CFS) advanced 51.86 percent to $2.46, as the clock approached noon ET, on 621,038 shares, compared to a daily average of 9,408 shares. The volume and sharp rise comes amid news that the company agreed to be taken over by an affiliate of ABRY Partners for $2.50 per share of common stock, a premium of approximately 77.4 percent over Comforce’s 30-day average closing stock price, and a 52-week high for the issue. Comforce Corporation is a leading provider of outsourced staffing management services.

Art Technology Group Inc. (Nasdaq: ARTG) leaped 45.37 percent by midday to $5.96, on volume of 59,981,921shares, towering above its three-month daily average of 1,135,700 shares, on the verge of an announcement that Oracle was about to buy ATG for $1 billion, thus adding the maker of e-commerce software to Oracle’s business-software offerings. Oracle will pay $6 a share, a 46 percent premium to Monday’s closing price and a level last seen in 2001 as the Internet bubble was still deflating.

Information Services Group, Inc. Units (Nasdaq: IIIIU) was ahead 24.48 percent to $3.86 nearing lunchtime in New York, on volume of 3,616 shares. The industry-leading information-based services company will release its third-quarter 2010 financial results on Tuesday, November 9. Neither the stock’s 52-week range nor average volume was available at press time.