The S&P 500 pushed to fresh record highs during midday trading on Wednesday, extending a three-day rally and eyeing a fourth straight gain. • Alphabet stock is moving in positive territory. Why is GOOG stock advancing?By midday in New York, the benchmark index hovered near 6,963.30, up 0.3%. The Nasdaq 100 outperformed, rising 0.7%, while both the Dow Jones Industrial Average and the Russell 2000 slipped modestly after three consecutive positive sessions.Tech strength defined the session. Intel Corp. (NASDA ...