Credit Suisse First Boston has refused to comment on reports that it has reached a $100m (€113m) settlement with the US federal authorities after an 18-month investigation into alleged malpractice in the investment bank's technology initial public offering business.

The Wall Street Journal reported that CSFB has agreed to settle the case for $100m with the Securities and Exchange Commission (SEC) and National Association of Securities Dealers (NASD), in a settlement in which the firm has neither accepted nor denied guilt.