New York ? Rising oil prices plagued Wall Street again Friday as the Dow Jones industrial average suffered its second straight 100-point-plus loss, ending a week dominated by concerns that energy costs would soon eat into corporate profits.

Traders engage in oil trading Friday at the New York Mercantile Exchange. Crude oil futures again flirted with the 0 a barrel mark Friday as prices rose on speculative buying and fears of supply disruptions due to refinery glitches.

Investors overlooked decent economic news, choosing instead to focus on oil. Transportation and manufacturing companies – considered the most oil-dependent – were hardest hit, though the selling was spread throughout the market as crude oil futures threatened to top the psychologically significant $60-per-barrel barrier for the second day in a row.

“The crude situation is a big concern right now,” said Brian Williamson, an equity trader at The Boston Company Asset Management. “People aren’t really looking at the economic numbers.”

The Dow Jones industrial average fell 123.60, or 1.19 percent, to 10,297.84, after plunging more than 166 points the previous session.

The broader gauges, which also posted big losses Thursday, were down as well.

Also adding some volatility to the market, institutional investors were adjusting their portfolios to reflect the annual rebalancing of the Russell indexes.

With few earnings reports and a relative dearth of economic news, oil remained the market’s focus for nearly the entire week. The drop in stock prices Thursday effectively ended, at least for the short-term, the market’s recent rally. For the week, the Dow lost 3.06 percent, the S&P fell 2.09 percent, and the Nasdaq dropped 1.76 percent.