NEW YORK  -The tech-heavy Nasdaq closed slightly higher on Wednesday after strong Microsoft Corp results boosted technology shares, but the S&P 500 and the Dow fell on lingering concerns about a weakening U.S. economy and the banking sector. Economically sensitive transport stocks had their weakest day in 11 months, and bank stocks fell as regional … Continue reading Nasdaq outperforms as investors cheer Microsoft, Dow transports sink