Exchanged-traded funds related to the oil sector were among the few winners of a losing session Friday, as crude prices were on the march.

The front-month September crude contract was up $1.20 at $76.15 a barrel. The iPath S&P GSCI Crude Oil Index ( OIL) was adding 46 cents, or 1.1%, to $41.76. The United States Oil ( USO) ETF was up 71 cents, or 1.3%, to $56.93. The PowerShares DB Oil ( DBO) was higher by 35 cents, or 1.3%, to $27.54.

The losers far outweighed the winners, led by declines in health and pharmaceutical ETFs. Amgen ( AMGN), which beat Wall Street's target for second-quarter earnings, was nonetheless down 1.4%. Among other names, Merck ( MRK), Forest Labs ( FRX) and Bristol-Myers Squibb ( BMY) were losing 1.9% or more.

The HealthShares European Drugs ( HRJ) was losing 97 cents, or 3.7%, to $25.61. The SPDR S&P Pharmaceuticals ( XPH) was down 77 cents, or 2.2%, to $33.64. The PowerShares Dynamic Pharmaceuticals ( PJP) was falling by 40 cents, or 2.1%, to $18.45.

Basic materials-related bundled securities were also lower. Among individual stocks, Weyerhaeuser ( WY), Dow Chemical ( DOW) and Freeport-McMoRan ( FCX) slumped 1.8% or more.

The Ultra Basic Materials ProShares ( UYM) dropped $3.61, or 4.2%, to $82. The WisdomTree International Basic Materials ( DBN) ETF was down $1.12, or 3.1%, to $35.23. The Materials Select Sector SPDR ( XLB) was losing 90 cents, or 2.3%, to $38.93.

The Internet Infrastructure HOLDRs ( IIH) was also hit hard, as holdings Akamai Technologies ( AKAM), NaviSite ( NAVI) and VeriSign ( VRSN) fell 3% or more. The ETF was losing 11 cents, or 2.1%, to $5.13.

If you liked this article you might like

Paradigm Opportunity Protects Investors in Tough Times

5 Things You Need to Know Before the Stock Market Opens (Correct)

U.S. Investors Brace for a Third Bailout in Greece

5 Things You Need to Know Before the Stock Market Opens

40 Hedge Funds' Best Stocks Show the Way for 2012 (Update 1)