ZURICH, April 28 (Reuters) - Switzerland’s central bank swung to a first-quarter profit of 5.7 billion Swiss francs ($5.88 billion) on Thursday, as valuation gains boosted its gold holdings and low interest rates saw price gains on interest-bearing paper and instruments in its foreign currency positions. A 4.1 billion gain on gold and 6.2 billion price gain on interest-bearing paper and instruments helped offset exchange rate losses. While the franc weakened against the euro through March 31 this year, it strengthened against the dollar . In the first quarter of 2015, the Swiss National Bank had posted its biggest ever quarterly loss of 30 billion francs after the removal of a minimum exchange rate sent the Swiss franc soaring against the euro in January. $1 = 0.9697 Swiss francs Reporting by Brenna Hughes Neghaiwi; Editing by Michael Shields
Swiss National Bank (SNB) - the central bank of Switzerland and a member of the Group of Seven major industrialized nations that are part of the European Union (EU) - has been under pressure to take action against banks suspected of helping tax ev@@