The iShares Dow Jones Transportation Index (IYT) exchange-traded fund was one of Friday's best performers. Holding CSX (CSX - Get Report) rose 3.5% after the company's chief executive said the company should have a stronger second half of 2007. The ETF was higher by $1.26, or 1.4%, to $88.93.
Also among winners, the PowerShares Lux Nanotech (PXN) ETF rose as holdings Arrowhead Research (ARWR - Get Report) and Cambridge Display Technology (OLED - Get Report) were rising by more than 4%. The ETF was higher by 21 cents, or 1.2%, to $17.48.
Meanwhile, Amgen (AMGN - Get Report) was down 3.9% on word it would stop work on a colon cancer trial involving its drug Vectibix in combination with other medications. The Biotech HOLDRs was losing $4.19, or 2.3%, to $177.64.ETFs tracking metals and mining were also declining. Gold slid $6.90 to close at $657.30 an ounce, and silver lost 25 cents to $13.23 an ounce. The iShares Silver Trust (SLV) slumped 1.9% to $131.32. The iShares COMEX Gold Trust (IAU) ETF was giving back 0.9% to $65.24. The streetTRACKS Gold Shares (GLD) ETF was falling 0.9% to $65.15. The Market Vectors Gold Miners (GDX) ETF was recently down 0.9% to $39.61.