AMSTERDAM, Jan 29 : ASML's latest results reignited the rally that has made it Europe's most valuable company, until questions about its capacity to meet record orders sent the stock sliding - highlighting just how stretched expectations have become. Shares in the Dutch chip-machine maker initially hit new highs after it reported fourth-quarter earnings on Wednesday, before reversing to end down 2 per cent. The whipsaw trading underscores how the firm, whose tools are used by chipmakers such as