Thursday's ETF Winners & Losers

ETFs related to oil services were among the strongest performers Thursday, as crude rebounded from six-month lows. Oil was recently up 44 cents to $61.18 a barrel, having reached an intraday low of under $60 a barrel on Wednesday.

The Oil Service HOLDRs(OIH Quote) ETF was adding 1.7% to $124.56. The iShares Dow Jones U.S. Oil Equipment Index(IEZ Quote) ETF was gaining 1.5% to $40.48. The Energy Select Sector SPDR(XLE Quote) ETF was higher by 1.3% to $51.55.

In addition, other commodities were moving to the upside. The iShares Silver Trust(SLV Quote) ETF was recently up $2.62, or 2.4%, to $111.48, and the iShares Comex Gold Trust(IAU Quote) ETF was tacking on 68 cents, or 1.2% to $57.98.

The PowerShares Lux Nanotech(PXN Quote) ETF was one of the worst losers Thursday, due to a 24% plunge in holding Nucryst Pharmaceuticals(NCST Quote). Shares fell after the company announced a trial for its eczema cream failed. The ETF was lower by 36 cents, or 2.1%, to $17.18.

The Internet Infrastructure HOLDRs(IIH Quote) ETF was also trading lower. Late Wednesday, holding InfoSpace(INSP Quote) warned about revenue, dropping the shares by nearly 21%. The ETF was down 13 cents, or 2.4%, to $5.36.

Retail ETFs followed CVS(CVS Quote), Walgreen(WAG Quote) and Rite Aid(RAD Quote) lower after Wal-Mart(WMT Quote) introduced a pricing plan for substantial discounts to generic drugs. CVS dropped 8.7%, Walgreen fell 6.7%, and Rite Aid lost 6.3%.

The Retail HOLDRs (RTH Quote) ETF was falling by $1.86, or 1.9%, to $96.88. The PowerShares Dynamic Retail (PMR Quote) ETF was recently lower by 26 cents, or 1.4%, to $17.82.