Wall Street is on track for its third straight day of gains, with major large-cap indices extending records as investors remain optimistic about corporate earnings and upcoming rate cuts.The S&P 500 rose 0.4% to 6,690 points after midday trading in New York. The Nasdaq 100 advanced 0.6% to nearly 24,750, while the Dow inched 0.1% higher to 46,350. The small-cap Russell 2000 rose 0.3%.XLK shares are testing new highs. See what is driving the move here.Technology's outperformance continues relentlessly. The s ...