Silver slid to the lowest since September 2010, sending its ratio to gold to the highest in almost 33 months, while bullion extended the longest slump in four years as investment holdings contracted and stocks rallied.
Silver slumped 28 percent this year, making it the worst-performing precious metal, on concern that industrial use isnt strong enough at a time when demand is waning for a protection of wealth. Silver held in exchange-traded products dropped to a four-month low on May 17, while hedge funds increased bets on lower prices by the most since March in the week to May 14. Global equities reached the highest since June 2008.