Sonae Sierra swung to a net loss of EUR 87.5 mln in the first quarter of this year from a net profit of EUR 21.8 mln in the same period of last year. The company said the variation in net profit was mainly driven by Indirect Net Profit that were adversely affected by the continuous increases in market capitalisation yields in Europe. In the same period Sonae Sierra's Direct Net Profit reached EUR 17.5, compared to the EUR 15.6 mln in Q1 2008.