Positive data and hopeful testimony from Treasury Secretary Tim Geithner at 10 am haven’t been enough to push markets higher following a lower opening on Thursday. Investor sentiment remains weary from Wednesday’s slide and a sour Jobless Claims report an hour before the opening bell. Roughly 90 minutes into the session, the S&P 500 was down 2.06% to 885, the Nasdaq had lost 1.88% to 1695, and the Dow has shed 1.77% to 8273. The day began on a poor note as the Dept. of Labor said...