$ASML Holding (ASML.US)$ shares slump over 4% after Q1 earnings report of total net sales of EUR 7.7 billion, a gross margin of 54.0%, and net income of EUR 2.4 billion.

Looking ahead, President and CEO Christophe Fouquet forecasts second-quarter sales to range between €7.2 billion and €7.7 billion, with a gross margin between 50% and 53%. The company also anticipates R&D expenses of about €1.2 billion and SG&A costs near €300 million. For the full year, ASML expects net sales to be between €30 billion and €35 billion, maintaining a gross margin of 51% to 53%.