The S&P 500 was virtually unchanged and was drifting near its record set on Monday. The Workday helped lead the market with a gain of 6.9 per cent after Elliott Investment Management said it's built a stake of more than USD 2 billion in it and supports its management. The company, which helps customers manage their finances and human resources, recently increased its programme to send cash to investors through purchases of its stock by up to USD 4 billion.That helped offset a 1.9 per cent drop for General ...