A bad day for stocks becomes much worse after blasts kill at least 3, injure many more along the Marathon course. Gold suffers its worst 2-day loss since 1980.
The sudden plunge in prices has stumped many investors, but you can find any number of theories to explain it.
As the selloff in gold has resumed, investors need to be on alert for signs of a pullback in equities as well.
With the precious metal down some $100, what's driving the panic selling?
Gold has fallen more than 20% since the summer of 2011, as worries about domestic economic problems ease and fears of a government default dissipate.
Prices of metals and oil dropped after the investment bank also downgraded estimates and outlook for the coming year.
Precious metals tumble as inflation fears ease and the US economy shows strength.
These exchange-traded funds are likely to be in play as traders look to profit from the turmoil in Europe.
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