The New York equities markets were lower at mid-session on Friday, reflecting what looked to end up a losing week for everyone but the Dow Jones Industrial Average. The Dow was lower by 0.1 percent at the mid-point in the day, to 11,009.19, but was on course to finish 1.1 percent higher on the week. Meanwhile, the Nasdaq Composite was down 0.6 percent on the day so far and down 0.2 percent on the week to 2,130.38. The S&P 500 was 0.5 percent lower on the day to 1,250.24, also 0.1 percent lower over the week.

Oil services companies were off for the week, as Schlumberger was down 2.3 percent to $57.88 and BJ Services also lost 2.3 percent, to $35.24.

Banks were down, as well, though not by as much as they could have been. Lehman Brothers, down by 11 percent at one point in the week, was down 4 percent to $62.97 by mid-session on Friday, and Goldman Sachs was off 4 percent to $143.94 where it had been down by as much as 8.7 percent earlier in the week. Bear Stearns was 3.1 percent lower to $132.18.

Stock exchange operators also ended the week in negative territory. Intercontinental Exchange was down 2.7 percent to $49.45, while Nasdaq lost 3.2 percent to $25.52 and NYSE Group declined by 6.4 percent to $53.50.

Ethanol producer Verasun Energy began trade on Wednesday, gaining 30 percent on its first day of availability. While it lost value on Thursday, mid-day Friday found it still 8.7 percent ahead for the week at $25.00.

Investors seemed to ignore data on inflation to send New York equities markets higher at the mid-point of the day on Thursday. The Dow Jones Industrial Average had added 0.8 percent to 10,905.22, while the Nasdaq Composite was up 1.7 percent to 2,120.64 and the S&P 500 gained 1 percent to 1,242.29.

Banks saw gains. Goldman Sachs was up 2.7 percent to $142.26, Lehman Brothers gained 2.9 percent to $62.68, and Bear Stearns added 3.4 percent to $128.37 on a report that profits were up 81 percent in the second quarter.

With crude oil prices rising again, ConocoPhillips gained 2.3 percent to $60.81, while Anadarko Petroleum advanced by 4 percent to $47.25. Ethanol producer Verasun Energy, however, which made its trading debut Wednesday with a gain of 30 percent, dropped 9.7 percent to $27.10.

Stock exchange operators saw gains on the day. Nasdaq was up 6 percent to $26.63, while NYSE Group gained 7.1 percent to $54.50.

Construction machinery manufacturer Caterpillar added 3.9 percent to $70.11 on the news that its quarterly dividend will go up by 20 percent.

In the semiconductor sector, upgrades from “neutral” to “buy” sent both Nvidia and Sandisk higher. Sandisk gained 5 percent to $53.07, while Nvidia was up 7 percent to $21.87.