Oil-related exchange-traded funds were the strongest performers Friday after crude jumped $1.57 to $52.05 a barrel. Still, crude oil futures have plunged roughly 17% since the end of 2006. On Monday the front-month February contract will expire. The iShares Dow Jones U.S. Oil Equipment Index ( IEZ) was rising 2.8% to $42.72. The SPDR Oil & Gas Equipment & Services ( XES) ETF was gaining 2.8% to $28.02. The Oil Services HOLDRs ( OIH) was tacking on 2.6% to $131.94, and the SPDR Oil & Gas Exploration & Production ( XOP) ETF was recently up 2.5% to $37.17. The Broadband HOLDRs ( BDH) ETF was also one of the day's winners. Holding Broadcom ( BRCM) was rising 2.7%, boosting the ETF by 25 cents, or 1.6%, to $15.73. The iShares Silver Trust ( SLV) ETF was higher as silver futures surged 23 cents to $12.92 an ounce. The ETF was gaining $1.93, or 1.5%, to $127.95. The Internet Architecture HOLDRs ( IAH) was one of the session's biggest losers. Holding IBM ( IBM) was lower by 3.7%, sinking the ETF by 49 cents, or 1.1%, to $42.79. The SPDR Retail ( XRT) ETF was lower as holdings Ross Stores ( ROST), Urban Outfitters ( URBN) and Tween Brands ( TWB) fell by 2% or more. The SPDR Retail ETF was shedding 24 cents, or 0.6%, to $41.96.