The Swiss franc firmed against the euro on Tuesday, again breaking through the psychologically sensitive 1.55 mark, as financial markets awaited the release of April trade data.
The franc traded at 1.5490 to the euro, unchanged from 1.549 at Monday's close. At one stage last Friday the franc weakened as far as 1.5576, but over the rest of last week it held mostly between 1.5460 and 1.5525 per euro.
The franc traded at 1.2047 per dollar, virtually unchanged from the 1.2041 level at the previous session's close.
"The bearish trend in EURCHF thus appears reinforced as long as the cross stays below 1.5575. The next key intraday directional parameter to the downside comes in at 1.5450, ie the May 18 low," UBS said in a note.
The SNB has helped stem a franc slide earlier this year by saying at the end of April the currency was too low against the euro at a time when volatility in financial markets already made the safe-haven currency more attractive.