Axcelis Technologies (ACLS -6.10%) stock is losing ground Thursday. The semiconductor equipment company's share price was down 7.3% as of 12:30 p.m. ET, according to data from S&P Global Market Intelligence.Axcelis published fourth-quarter earnings results after the market closed yesterday and actually delivered sales and earnings performance that beat Wall Street's expectations. The business posted earnings of $2.15 per share on revenue of $310.29 million, beating the average analyst estimate's call for a ...