Stock market today: Wall Street extends its push into record highs, led by chipmakers

NEW YORK (AP) — Stocks are extending their push to record highs in early trading on Wall Street, led by big gains in chipmakers. The S&P 500 was up 0.5% in the early going Thursday. The Dow Jones Industrial Average was up 177 points, or 0.5%. The Nasdaq composite added 0.8%. Micron led chipmakers higher after reporting blowout results for its latest quarter that easily surpassed analysts' expectations. Traders will be keeping a close eye on Reddit, whose shares begin trading today. Treasury yields were mostly steady a day after the Federal Reserve said it still expects to make three…