Business

IBM insider net expands

Federal prosecutors charged Trent Martin, a research analyst at a Connecticut brokerage firm, with trading and tipping others before computer giant IBM’s $1.2 billion acquisition of SPSS in 2009, expanding a related insider-trading case filed last month.

Martin was also charged with passing the information to others, including two stockbrokers and his roommate. The group allegedly netted more than $1 million.