World tech stocks hit a record high on Tuesday spurred on by an all-time peak for Apple, a 17-year top for European tech firms and news that Twitter and Netflix were set to join Wall Street’s flagship S&P 500 index. The upbeat mood had raised Asia’s big BATTS — Baidu, Alibaba, Tencent, Taiwan Semiconductor, Samsung — with Alibaba notching a new high and Baidu surging 5 percent in its best day in more than a month.