Software company Synopsys is buying Ansys in a cash-and-stock deal valued at approximately $35 billion. Ansys shareholders will receive $197 in cash and 0.3450 shares of Synopsys common stock for each Ansys share. Ansys shareholders are expected to own about 16.5% of the combined company. The deal is expected to close by the first half of 2025. It still needs approval from Ansys shareholders.