Bundled securities following U.S. Treasuries were among the only winners of a down day for the major averages Thursday as traders pulled money from the equity market and dumped it into bonds.

The 10-year Treasury note rose 3 1/32 in price, yielding 4.60%, and the 30-year bond was tumbling 1 16/32, yielding 4.93%

The iShares Lehman 20+ Year Treasury Bond ( TLT) was up $1.25, or 1.5%, to $87.50. The SPDR Lehman Long Term Treasury ( TLO) was higher by 58 cents, or 1.2%, to $50.96. The iShares Lehman 3-7 Year Treasury Bond ( IEI) climbed 73 cents, or 0.7%, to $101.87.

Nearly every other exchange-traded fund was sliding Thursday. Overseas-related bundled securities were among the worst decliners after indices dropped overnight. Tokyo's Nikkei 225 fell 2%, and Hong Kong's Hang Seng plummeted 3.3%. London's FTSE was worse by 3.1%, and Frankfurt's DAX dropped 1.7%.

The iShares MSCI Brazil Index ( EWZ) was falling $4.29, or 8.1%, to $48.67. The iShares S&P Latin America 40 Index ( ILF) dropped $12.14, or 6.5%, to $173.85. The iShares FTSE/Xinhau China 25 Index ( FXI) slumped $7.56, or 6.1%, to $115.01. The SPDR S&P China ( GXC) was lower by $4.46, or 7%, at $59.59.

Gold- and silver-related ETFs were also crumbling, as the dollar declined against the world's major currencies. Gold futures dove $21.70 to $658 an ounce, and silver was down 99 cents to $11.57 an ounce.

The PowerShares DB Silver ( DBS) was shedding $2.33, or 9.4%, to $22.34. The Market Vectors Gold Miners ( GDX) ETF was losing $2.90, or 8%, to $33.55. The iShares Silver Trust ( SLV) was down $8.07, or 6.5%, to $115.78.

Basic-materials-related bundled securities were among the biggest losers. Among individual stocks, Alcoa ( AA), Nucor ( NUE) and Freeport-McMoRan ( FCX) slumped 6.5% or more.

The First Trust Materials AlphaDEX ( FXZ) ETF slid $2.32, or 11.8%, to $17.39. The Ultra Basic Materials ProShares ( UYM) was dropping $5.39, or 7.6%, to $65.99. The iShares Dow Jones U.S. Basic Materials ( IYM) was down $2.64, or 4.2%, to $60.86.

Homebuilders were also suffering. Among individual names, Ryland ( RYL), Centex ( CTX), Toll Brothers ( TOL) and Hovnanian ( HOV) were all lower.

The iShares Dow Jones U.S. Home Construction ( ITB) was tumbling 21 cents, or 0.9%, to $23.47. The SPDR S&P Homebuilders ( XHB) lost 8 cents, or 0.3%, to $23.81.

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