BOSTON (CBS) – For the first time in recent memory, a pair of Massachusetts companies went public on the same day.

Medical biotech Tesaro of Waltham gained almost 1.5% in its first day of trading. Burlington software company EXA Corp. lost 2% its first day on the NASDAQ.

WBZ NewsRadio 1030′s Anthony Silva reports

The founder of IPOscoop.com, John Fitzgibbon, tells me the Tesaro offering was rushed to market, something he calls a positive sign.

Fitzgibbon says the IPO market has been shaky and sloppy for months. He says the market had been drying up heading into the Facebook IPO and it was a victim of the slow market.

Fitzgibbon says nothing was scheduled for that week, and there was a void behind it. He rejects the idea that Facebook put the “stake in the vampire’s heart.”