Apple and online travel broker Priceline.com paced the Sector Leaders on Tuesday, hitting new highs in strong volume as the Dow Jones industrial average and the S&P 500 hit multiyear peaks. Apple (AAPL) added 9.65 to a record 535.41 in volume that was 47% above normal. The stock is 25% beyond a 427.85 buy point from a cup-with-handle base. Apple on Tuesday sent out invitations to news organizations for an event in San Francisco next Wednesday,